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Observing >> Deep Sky Observing

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acr_astro
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Reged: 01/16/13

Loc: Germany, Dusseldorf area
Supernova in M82
      #6327810 - 01/22/14 08:28 AM

Hi,

last night, a new possible supernova in M82 has been observed. Currently it has already a brightness of 11.7mag.

http://www.cbat.eps.harvard.edu/unconf/followups/J09554214+6940260.html

"2014 01 22.3955
L. Elenin (Lyubertsy, Russia) and I. Molotov (Moscow, Russia) confirm an apparent supernova PSN J09554214+6940260 in M82. Object visible on 4 (BVRI) images remotely taken at ISON-NM Observatory (Mayhill, NM, USA) with 0.4-m f/3 telescope + CCD (KAF09000) on Jan. 22.3955, 2014. Object located at 09h 55m 42s.15 +/- 0".13, +69d 40' 25".8 +/- 0".11 (UCAC-4) with magnitudes 12.91B (22.3955); 11.72V (22.4101); 11.31R (22.4061); 11.33I (22.4066). Nothing is visible at this position on the archive POSS and POSSII images. Image of PSN J09554214+6940260 available at http://spaceobs.org/images/TOCP/PSNJ09554214+6940260-20140122.png"


Further info as well here: PSN J09554214+6940260

Achim


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LivingNDixie
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Re: Supernova in M82 new [Re: acr_astro]
      #6327857 - 01/22/14 09:02 AM

That seems pretty bright. Hope this turns out to be true.

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geminijk
scholastic sledgehammer


Reged: 04/03/08

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Re: Supernova in M82 new [Re: LivingNDixie]
      #6327903 - 01/22/14 09:23 AM

How cool is this. I just might have imaged this SN on Sunday during the live Virtual Star Party on Sunday night.

John

Edited by okieav8r (01/22/14 05:08 PM)


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MikeBOKC
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Re: Supernova in M82 new [Re: LivingNDixie]
      #6327909 - 01/22/14 09:24 AM

This could be a good one . . . M82 is right next door at 12 million LY. Might be reaching peak brightness this weekend as well . . . already scheduling a trip to the club dark site!

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MikeBOKC
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Re: Supernova in M82 new [Re: geminijk]
      #6327999 - 01/22/14 10:21 AM

According to everything on line so far the discovery images were all taken on Monday. If so you could be the actual discoverer. You might want to contact the Harvard folks with your image to see if they will credit you with it!

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Darren Drake
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Re: Supernova in M82 new [Re: MikeBOKC]
      #6328009 - 01/22/14 10:32 AM

I wonder if any of the neutrino detectors were able to detect anything. Should be interesting to look into.

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acr_astro
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Reged: 01/16/13

Loc: Germany, Dusseldorf area
Re: Supernova in M82 new [Re: MikeBOKC]
      #6328012 - 01/22/14 10:33 AM

Hi John,

that is amazing news!

Achim


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IVM
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Reged: 01/07/08

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Re: Supernova in M82 new [Re: MikeBOKC]
      #6328028 - 01/22/14 10:41 AM

Bright one, and in a well-positioned Messier no less, in time for the season! And John, do let the pros know of your observation. Even if you are not recognized as the discoverer your "pre-discovery observation" must be of great interest.

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IVM
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Reged: 01/07/08

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Re: Supernova in M82 new [Re: IVM]
      #6328040 - 01/22/14 10:49 AM

Here is what appears to be a series of "pre-discovery" observations - this guy (in retrospect, I believe) traced it to how it was brightening from mag. 14.4 on January 15:

http://www.k-itagaki.jp/psn-m82.jpg

And no wonder the position seemed familiar to me - as it not infrequently happens, this supernova arose from a compact star cloud, in this case the one that contributes to the visually sharp NW corner of the central large bright region in this galaxy. (My last observation from 2012 is here:

http://idle-stargazer.blogspot.com/2012/08/clusters-in-m82.html


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MikeBOKC
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Re: Supernova in M82 new [Re: IVM]
      #6328124 - 01/22/14 11:25 AM

Word is this is a Type 1a which originates with a white dwarf accreting matter from a binary companion. I am not sure what the usual brightening curve or lifetime would be, so if anyone knows please post.

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dgg99
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Re: Supernova in M82 new [Re: MikeBOKC]
      #6328172 - 01/22/14 11:51 AM

Being a type Ia SN in such a nearby galaxy (11.5 Mly), I guess it has the potential to be very bright. If it is a "normal" Ia supernova it could be significantly brighter than SN 2011fe in M101, but the ATEL report says it is somewhat obscured by dust. They also say that the SN is ~12 days before maximum.

The SN is already bright at 11.5 mag, should be visible with any telescope!

It is surprising that it went undiscovered for a week...


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MikeBOKC
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Re: Supernova in M82 new [Re: dgg99]
      #6328190 - 01/22/14 12:01 PM

There is speculation now that it could go to mag 8, putting it in binocular range. How many tens of thousands of scopes will be aimed at M82 this weekend?

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IVM
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Reged: 01/07/08

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Re: Supernova in M82 new [Re: MikeBOKC]
      #6328231 - 01/22/14 12:16 PM

My estimate is a couple hundred

EDIT: I would love to add to the count myself but can't - clouds, clouds, clouds.

EDIT 2: The above estimate pertains to this planet only. Mike probably meant the universe, so no argument between us.

Edited by IVM (01/22/14 12:24 PM)


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tigerroach
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Re: Supernova in M82 new [Re: IVM]
      #6328322 - 01/22/14 12:54 PM

This is great news. Now for some clear skies...

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Khyron
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Re: Supernova in M82 new [Re: Darren Drake]
      #6328327 - 01/22/14 12:56 PM

Quote:

I wonder if any of the neutrino detectors were able to detect anything. Should be interesting to look into.




For what it's worth:

"While the explosion undoubtedly produced neutrinos, the distance is great enough that any arriving at Earth-based neutrino detectors will likely be swamped by other sources. However, the relative closeness of M82 means that a variety of telescopes, both ground- and space-based, will be able to monitor its evolution over the next few days as the explosion fades. The data will help astronomers distinguish whether it truly is a type Ia (the galaxy it's in makes a core-collapse supernova more probable, but doesn't rule out white dwarfs), and possibly even tell whether one or two white dwarfs were involved." - ArsTechnica


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Jmax
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Re: Supernova in M82 new [Re: geminijk]
      #6328334 - 01/22/14 12:59 PM

I took 20 minutes of exposure on M81/82 on Monday night, as well. I still haven't processed anything or even looked, so I can't wait to get home and see if I got it! If I did, I'll post my picture later tonight.

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acr_astro
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Re: Supernova in M82 new [Re: Jmax]
      #6328410 - 01/22/14 01:30 PM

Hi all,

just coming in from the backyard. I observed it with the 10" f/5 Dobsonian! Really easy to find when you follow the line built by the two mag 10 stars near the Center. Best view was at 125x using the 10mm Celestron X-cel.

I did not estimate the brightness in detail, leaving this for stargazers taking Images. Definitely dimmer than the two "guiding stars".

CS!

Achim


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Telescopic
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Reged: 11/29/13

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Re: Supernova in M82 new [Re: acr_astro]
      #6328567 - 01/22/14 02:45 PM

Cool Stuff, next clear night I will look for it!

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Americal
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Re: Supernova in M82 new [Re: acr_astro]
      #6328735 - 01/22/14 03:57 PM

Already had a 2 night trip to my dark sky desert site planned for Thurs and Fri nights. Will def try to sketch M82 both nights. My luck/timing doesn't usually work this good, it'll probably cloud up. Woohoo.

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geminijk
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Reged: 04/03/08

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Re: Supernova in M82 new [Re: Americal]
      #6328928 - 01/22/14 05:18 PM Attachment (69 downloads)

Here is a link to actual VSP video.
http://www.youtube.com/watch?v=ePOrciuULH0&feature=share

And here is a snag of just the M82 and the SN.


Edited by geminijk (01/22/14 05:19 PM)


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nytecam
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Re: Supernova in M82 new [Re: geminijk]
      #6328964 - 01/22/14 05:32 PM Attachment (48 downloads)

Quote:

Here is a link to actual VSP video.
http://www.youtube.com/watch?v=ePOrciuULH0&feature=shareAnd here is a snag of just the M82 and the SN.



Great image John - all I need is a clear sky

Ten days ago a SN found in nearby NGC 3448 - see chart - it's amazing to think its light passed by M82 some 12M years ago and light from both events arrived on earth at nearly the same time after all those eons


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Saint Aardvark
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Reged: 11/25/10

Re: Supernova in M82 new [Re: nytecam]
      #6329026 - 01/22/14 06:06 PM

There's an amazing picture on Twitter from someone who was able to capture an image with a 66mm refractor:

https://twitter.com/willgater/status/426118680934481920/photo/1


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IVM
Pooh-Bah


Reged: 01/07/08

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Re: Supernova in M82 new [Re: nytecam]
      #6329034 - 01/22/14 06:09 PM

Interesting thought, Maurice.

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itfrightensme
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Reged: 11/29/13

Re: Supernova in M82 new [Re: IVM]
      #6329043 - 01/22/14 06:14 PM

I imaged this on the 19th and didn't even notice, thought it was a milky way star!

http://imgur.com/jJWUxqJ


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jeff heck
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Re: Supernova in M82 new [Re: IVM]
      #6329047 - 01/22/14 06:16 PM

Wow! I observed this SN at 8:30pm on Sunday night 1-19-2014 at a green dark site. I did not recall a star there on M82 and had a fellow observer take a look. He texted me later that night and said it was a field star. Very cool!

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nytecam
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Re: Supernova in M82 new [Re: jeff heck]
      #6329117 - 01/22/14 06:41 PM Attachment (122 downloads)

Here's my quickie 20sec shot through cloud gap tonight

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Saint Aardvark
super member


Reged: 11/25/10

Re: Supernova in M82 new [Re: nytecam]
      #6329189 - 01/22/14 07:12 PM

WOW! For a quick photo, that's wonderful!

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Darren Drake
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Re: Supernova in M82 new [Re: Saint Aardvark]
      #6329240 - 01/22/14 07:38 PM

Correct me if I'm wrong but is this possibly the closest SN since 1987A?

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Scott in NCAdministrator
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Re: Supernova in M82 new [Re: Darren Drake]
      #6329259 - 01/22/14 07:44 PM

Quote:

Correct me if I'm wrong but is this possibly the closest SN since 1987A?




Not that Wikipedia is always correct, but this article states that it's the closest SN since 1993J.


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fungus57
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Re: Supernova in M82 new [Re: Scott in NC]
      #6329387 - 01/22/14 09:12 PM

It's about 6 degrees and windy out, with 6" of snow on the ground. But I was able to sneak in a quick glimpse between the clouds, easily spotted with my 10" f/5 despite some light pollution reflecting off the snow. I'm very glad to see a such a rare event, especially now that I'm warm again!

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Nick Anderson
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Reged: 04/21/13

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Re: Supernova in M82 new [Re: fungus57]
      #6329466 - 01/22/14 09:58 PM Attachment (72 downloads)

With the memory of SN 2011fe not so far away, I decided to do a few brief, rough calculations to approximate the M82 supernova's peak brightness. Both of these are white dwarf (Type 1a) supernovae, meaning they each will have the same peak luminosity. This however is different than apparent brightness, which is not difficult to calculate if the distances are known.

In short, I predict a peak brightness of magnitude 8.7, not taking into account any dust absorption. Attached are my calculations.

-Nick Anderson


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jhayes_tucson
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Re: Supernova in M82 new [Re: nytecam]
      #6329532 - 01/22/14 10:40 PM

Quote:

Here's my quickie 20sec shot through cloud gap tonight




Very nice! I'm inside warming up while I work on imaging it (even as I type). Hopefully I can get something nearly as nice as your "quickie".


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george golitzin
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Re: Supernova in M82 new [Re: acr_astro]
      #6329635 - 01/22/14 11:55 PM

Wow that's the brightest SN I recall seeing. Thanks for posting, Achim.

Showed it to my daughter in my 18-inch tonight--very nice--usually it's kind of hard to tell someone where to look to see the SN; this time it was easy!

-geo.


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Telescopic
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Re: Supernova in M82 new [Re: geminijk]
      #6329774 - 01/23/14 02:17 AM

I just checked it out with my 8" reflector. I found both M81 & M82 as faint fuzzies. The SN is was not visible to me. I'm in a Red zone near an Orange zone border but viewing North means viewing over the brighter part of town. If the brightness is supposed to peak this weekend I will continue to try.

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dgg99
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Re: Supernova in M82 new [Re: Scott in NC]
      #6329870 - 01/23/14 05:10 AM

Quote:

Quote:

Correct me if I'm wrong but is this possibly the closest SN since 1987A?




Not that Wikipedia is always correct, but this article states that it's the closest SN since 1993J.




What about SN 2004dj in NGC 2403? That galaxy is 8 to 10.5 Mly distant according some sources.

Regarding possible maximum magnitude, I've calculated magnitude 8.4 assuming it is not obscured. I used -19.3 absolute magnitude and 11.5 Mly distance.

The Latest Supernovae site is listing now magnitude 10.9! Unfortunately bad weather here...


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acr_astro
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Re: Supernova in M82 new [Re: dgg99]
      #6329923 - 01/23/14 06:24 AM

Hi,

the official name for this supernova is now SN 2014J.

Achim


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Mike C
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Reged: 03/05/08

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Re: Supernova in M82 new [Re: acr_astro]
      #6330065 - 01/23/14 08:23 AM

I only read about this supernova as I was about to go to bed last night for an early start this morning. Funnily enough, I'd been using a 12" Newtonian to view galaxies that evening, including M108 and M109 in Ursa Major, but not M82 unfortunately!

So, I delayed my sleep to view SN 2014J with my old 8" SCT (for ease of set up). It was only a quick look, and I was not very dark-adapted, but it was quite easily visible - though more so with averted vision.

Due to lack of time I did no imaging, but I've got my fingers crossed that there will be some clear skies on Saturday night as predicted. Generally the weather has been unsettled and mostly cloudy.

Regards,


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IVM
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Reged: 01/07/08

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Re: Supernova in M82 new [Re: Mike C]
      #6330171 - 01/23/14 09:15 AM

Delighted by the maximum estimates above. Of course in a highly inclined spiral like M82 it is likely to be obscured, but on the other hand since it is in a star cloud (as visible from Earth) it is at least between the densest of the dust clouds.

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Astrojensen
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Re: Supernova in M82 new [Re: IVM]
      #6331136 - 01/23/14 06:01 PM

I have just come in from a short session, chasing the supernova through some sucker holes in the clouds. It was very clear between the clouds and the supernova was easily visible in my 63mm Zeiss Telemator at 76x (11mm ES82) and 93x (9mm ES100). It was difficult at 47x (18mm ES82) and not visible on the bright background of M82 at 28x (30mm ES82).

At 93x, I could hold it steady, along with some clumps and dust bands in M82. A fantastic sight! At 28x, in the 3° TFOV of the 30mm ES82, I could see the huge disk of M81, which appeared bigger than normal, and also keep both NGC 3077 and NGC 2976 inside the field. A wonderful view.


Clear skies!
Thomas, Denmark


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ScottAz
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Re: Supernova in M82 new [Re: Astrojensen]
      #6331562 - 01/23/14 10:07 PM

Very cool! Can't wait for a break in the clouds! And maybe a change in the weather ...

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Nick Anderson
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Re: Supernova in M82 new [Re: dgg99]
      #6331601 - 01/23/14 10:41 PM

I said:
Quote:


With the memory of SN 2011fe not so far away, I decided to do a few brief, rough calculations to approximate the M82 supernova's peak brightness. Both of these are white dwarf (Type 1a) supernovae, meaning they each will have the same peak luminosity. This however is different than apparent brightness, which is not difficult to calculate if the distances are known.

In short, I predict a peak brightness of magnitude 8.7, not taking into account any dust absorption. Attached are my calculations.





Diego said:
Quote:


Regarding possible maximum magnitude, I've calculated magnitude 8.4 assuming it is not obscured. I used -19.3 absolute magnitude and 11.5 Mly distance.





Interesting, given that absolute magnitude value I also get an estimate of magnitude 8.4 (same method used as above, just a different "d1" , "I1", and "m1"). This is much better estimate as to the theoretical peak brightness, but in actuality you can see that using SN 2011fe in M101 we get a slightly different answer (due to dust).

It's also worth noting that for my original estimate using SN 2011fe, some sources give its peak brightness as magnitude 9.9. I used 10.0, meaning my estimate for SN 2014J could be changed to 8.6 instead.

(82nd post to CN...couldn't resist)

-Nick Anderson


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Patricko
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Re: Supernova in M82 new [Re: Nick Anderson]
      #6331746 - 01/24/14 12:45 AM

Just came in from trying to see it with 11.75x48mm binoculars under mag 4.2 skies with light high clouds. I failed to see it. If I was at home my 60/700mm would probably have seen it. Oh well... I will try again tomorrow night if conditions allow. At least both of the GXs were visible given the conditions.

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buddyjesus
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Re: Supernova in M82 new [Re: Astrojensen]
      #6331761 - 01/24/14 12:57 AM

Quote:

I have just come in from a short session, chasing the supernova through some sucker holes in the clouds. It was very clear between the clouds and the supernova was easily visible in my 63mm Zeiss Telemator at 76x (11mm ES82) and 93x (9mm ES100). It was difficult at 47x (18mm ES82) and not visible on the bright background of M82 at 28x (30mm ES82).

At 93x, I could hold it steady, along with some clumps and dust bands in M82. A fantastic sight! At 28x, in the 3° TFOV of the 30mm ES82, I could see the huge disk of M81, which appeared bigger than normal, and also keep both NGC 3077 and NGC 2976 inside the field. A wonderful view.


Clear skies!
Thomas, Denmark




object easily seen with averted vision at 82x but not visible at 40x so my obs jive with yours.


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SteveRosenow
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Re: Supernova in M82 new [Re: ScottAz]
      #6331772 - 01/24/14 01:05 AM

This sucker is BRIGHT!

Viewed it perfectly in my Meade LX6. Camera hookup is going!

Gonna be a beautiful night!


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Telescopic
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Re: Supernova in M82 new [Re: ScottAz]
      #6331840 - 01/24/14 02:10 AM

Okay, last night I didn't go beyond 30X on it because I was having trouble finding M82. Now that I know exactly where M81 & M82 are I found them instantly tonight and played around with magnification. Bumping up to 60X I could see it with averted vision, higher than that it got easier.

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SteveRosenow
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Re: Supernova in M82 new [Re: Telescopic]
      #6331869 - 01/24/14 03:09 AM Attachment (108 downloads)

Here's a quickie tonight shot through the LX6.

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Astrojensen
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Re: Supernova in M82 new [Re: SteveRosenow]
      #6331894 - 01/24/14 03:37 AM

Steve, that is one of the better images of M82 I've seen. You've caught the dust bands and the starburst regions unusually well. And the supernova, of course.


Clear skies!
Thomas, Denmark


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mountain monk
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Re: Supernova in M82 new [Re: Astrojensen]
      #6331900 - 01/24/14 04:01 AM

Got it tonight in my NP-101 at 90x. This going to be fun except for the temp---2 below zero.

Dark skies.

Jack


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canukLX90
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Re: Supernova in M82 new [Re: SteveRosenow]
      #6331917 - 01/24/14 04:29 AM Attachment (71 downloads)

Nice image Steve showing lots of detail. Here is my quickie
shot...taken at F2.8 and single 2 minute subs stacked.
Clear weather in the PNW just in time to watch this SN

PJ


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IVM
Pooh-Bah


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Re: Supernova in M82 new [Re: canukLX90]
      #6332129 - 01/24/14 08:55 AM

Good to see from the photos here that the supernova looks so much brighter than the super-star-cluster next to it even deeper in the central bright zone. If so it should remain bright enough for a good observation for quite some time, maybe even until it clears here.

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Alein 1630
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Re: Supernova in M82 new [Re: acr_astro]
      #6332221 - 01/24/14 09:47 AM

im going to try tonight to see it, weather.com says its going to be mostly cloudy ( )
its sunny now though, hopfully it stays like that!


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Alein 1630
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Re: Supernova in M82 new [Re: Astrojensen]
      #6332226 - 01/24/14 09:48 AM

Quote:

Steve, that is one of the better images of M82 I've seen. You've caught the dust bands and the starburst regions unusually well. And the supernova, of course.


Clear skies!
Thomas, Denmark




+1


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davebuechler
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Re: Supernova in M82 new [Re: Alein 1630]
      #6332388 - 01/24/14 11:32 AM

Very nice image Steve

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acr_astro
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Re: Supernova in M82 new [Re: davebuechler]
      #6332635 - 01/24/14 01:19 PM

Hi Steve,

that's a truely nice image catching SN 2014J in the galaxy.

Achim


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Nick Anderson
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Re: Supernova in M82 new [Re: acr_astro]
      #6332657 - 01/24/14 01:28 PM

Below is my log of SN 2014J from last night. We've had a lot of snow here in the mountains this week, and I had to wait until the late-night flurries ended before pulling out my 8-inch scope. The skies were partly cloudy with a muddled 4/10 transparency. About 2 inches of snow remained on the ground, likely causing additional skyglow. Temperatures were no higher than 5 degrees F, but fortunately with minimal winds.

SN 2014J in M82: easy averted vision object; located in the plane of the galaxy, roughly an arcminute from the center; about the same brightness as a nearby 11.1 magnitude star (TYC 4383-744-1), if not a slight bit fainter; this is in contrast to its current listed 10.9 magnitude; perhaps the galaxy’s glow gives the illusion that the supernova is fainter than it really is; 96x is preferred over 48x; viewed at 48x and 96x

-Nick Anderson


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hbanich
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Re: Supernova in M82 new [Re: ScottAz]
      #6333056 - 01/24/14 04:02 PM Attachment (58 downloads)

I had a chance to see SN2014J last night in M82 in my 28 inch, and what a treat! Conditions were pretty good even though the seeing was soft, but the addition of the SN only makes M82 even more interesting to look at. I've added the SN to a sketch I made in 2011 and look forward to watching it brighten.

By the way, the seeing was really sharp when I made the sketch in 2011 and I was able to use magnifications up to 812x, and the SQM was 21.30.

Edited by hbanich (01/24/14 04:04 PM)


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BillP
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Re: Supernova in M82 new [Re: hbanich]
      #6333824 - 01/24/14 11:13 PM

I just spotted it. Not the darkest of nights here, but still spectacular Used the XT10i. Also caught it using for the first time the 14mm Meade 4000 UWA I recently found...made it even more special

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silverking
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Re: Supernova in M82 new [Re: hbanich]
      #6333864 - 01/24/14 11:24 PM

Got a look at SN2014J in M82 tonight, 150mm Celestron refractor at the intersection of an orange/red zone.

Definitely had to use averted vision, and saw it "cleanest" with a couple of eyepieces taking me between 90X and 110X.

There's been a fair amount of regional press indicating that the general public "might be able to see it through binoculars, which is a stretch.....perhaps even a tall-tale


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hokkaido53
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Re: Supernova in M82 new [Re: silverking]
      #6333900 - 01/24/14 11:53 PM

Just writing to say that I caught the SN about 8:00pm MST tonight,Jan. 24, while observing in northern New Mexico. It was brighter than I had expected. I used 58x and 169x with my 16" dob.

However, the supernova actually occurred about 11,420,000 years ago, and we are just seeing its light. Is that correct?

Roy

Edited by hokkaido53 (01/25/14 12:13 AM)


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kywildcats
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Re: Supernova in M82 new [Re: hokkaido53]
      #6334007 - 01/25/14 01:18 AM



However, the supernova actually occurred about 11,420,000 years ago, and we are just seeing its light. Is that correct?
Roy





That is correct.


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Astrojensen
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Re: Supernova in M82 new [Re: silverking]
      #6334128 - 01/25/14 03:38 AM

Quote:

There's been a fair amount of regional press indicating that the general public "might be able to see it through binoculars, which is a stretch.....perhaps even a tall-tale




The galaxy? Sure, if they know what they're doing (and they don't). The supernova? Not so much.

My observations through my 63mm refractor and that I had to use at least around 50x to make the supernova discernable from the galaxy background suggests that even if the supernova should brighten to mag 9 or so, that it would not be possible to separate the galaxy and the supernova in a pair of handheld binoculars with magnifications in the 7x - 10x range. It *might* be doable, IF it brightens to mag 9, to do it in an image-stabilized 15x50 or 18x50.

But a small spotting scope is a whole different story! A 60mm spottingscope with the zoom set to max, 50x - 60x, should be able to do it. But again, these kind of things are easier said than done for Joe Q Public. Almost nobody will be able to find the galaxy in the first place. Sometimes, I just wish the media would shut up about such events.

If the local news catches smell of it, it won't take long before they call me and I have to try to explain it all to them and not sound too pessimistic, while not being unrealistic either. I don't want to tell someone that they can see it, when I know they won't be able to find it.


Clear skies!
Thomas, Denmark


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dgg99
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Re: Supernova in M82 new [Re: Astrojensen]
      #6334277 - 01/25/14 07:57 AM

Very nice observations everyone! Here clouds, rain and more clouds...

From what I've read here and here, looks like this SN is sgnificantly reddened and obscured, so it probably won't get near the magnitudes we calculated before. It's being a bright one though!


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Khyron
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Re: Supernova in M82 new [Re: Astrojensen]
      #6334517 - 01/25/14 10:48 AM

Quote:

But again, these kind of things are easier said than done for Joe Q Public. Almost nobody will be able to find the galaxy in the first place. Sometimes, I just wish the media would shut up about such events.

If the local news catches smell of it, it won't take long before they call me and I have to try to explain it all to them and not sound too pessimistic, while not being unrealistic either. I don't want to tell someone that they can see it, when I know they won't be able to find it.




Oh, come on now... This is a good opportunity to generate some interest in astronomy. While it's true that the media has a tendency to distort and outright mislead, I think we need to think of them as a valuable asset.

Let the media build up expectations and get everyone interested. Then, when they contact you, politely (and interestingly) explain the situation and what knowledge and optics are going to be required to actually see it. (But make sure you're accurate, since a few estimates have put the SN into the range of good binoculars within a few days.)

Then, be sure to direct interested folks towards an observatory or website where they can actually see the SN and learn more about it!


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Special Ed
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Re: Supernova in M82 new [Re: Khyron]
      #6334711 - 01/25/14 12:22 PM

Some great reports and images folks, and Howard, that is a fine looking sketch.

I got my first look early this morning. I was struck by how different the familiar sight of M82 looked with that bright pinpoint seemingly superimposed on it.

I estimated the visual mag at 11.0. Full report and sketch are here.


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BillP
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Re: Supernova in M82 new [Re: Special Ed]
      #6334995 - 01/25/14 02:24 PM

Here's a question for the group...

This supernova is over 11 million LY away and appears to us as a Mag 11 star. If this SN was positioned where Alpha Centari is, what would its visual magnitude be to us?

btw...Scott... *H*A*P*P*Y* *B*I*R*T*H*D*A*Y


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canukLX90
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Re: Supernova in M82 new [Re: Special Ed]
      #6335052 - 01/25/14 02:58 PM Attachment (31 downloads)

Interesting report on your conditions and the SN. I applaud
your persistence in observing this SN under really less than
favorable weather conditions.

Here in the PNW we are catching a break from the usually
normal for this time of year clouds and rain. I feel almost
guilty having 40 deg F temps at midnight!

The SN was brighter than the previous nights observation.
Attached is a quickie of a raw uncalibrated single frame.
1 X 2 minutes at F10 / 8 inch F4 newt / QSI 632ws and TV
2.5X PowerMate.

PJ


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Nick Anderson
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Re: Supernova in M82 new [Re: BillP]
      #6335090 - 01/25/14 03:21 PM

Quote:

Here's a question for the group...

This supernova is over 11 million LY away and appears to us as a Mag 11 star. If this SN was positioned where Alpha Centari is, what would its visual magnitude be to us?





Well doing a very rough approximation, if we take the Alpha Centauri system to be about a parsec away (it's a little bit more than this), then it is one-tenth the distance of 10 parsecs (which defines absolute magnitude). According to the inverse square law, dividing the distance by 10 will increase the intensity by 100. Our apparent magnitude system is defined by a logarithmic scale so that a jump in 5 magnitudes equals a brightness factor of 100 (lower numbers being brighter and higher numbers being fainter). The absolute magnitude of a Type 1a supernova is -19.3, therefore a supernova of this type (such as SN 2014J or SN 2011fe) would be magnitude -24.3 at about the distance of Alpha Centauri. Compare this to the Sun's apparent magnitude of -26.7 and you'll realize how extraordinarily bright this would be!!! The Sun would be only about 10 times as bright!!

-Nick Anderson


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BillP
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Re: Supernova in M82 new [Re: Nick Anderson]
      #6335129 - 01/25/14 03:45 PM

Very sombering to think about, and what it would be like if something like this happened in the local neighborhood!

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Scott in NCAdministrator
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Re: Supernova in M82 new [Re: BillP]
      #6335171 - 01/25/14 04:04 PM

Quote:

btw...Scott... *H*A*P*P*Y* *B*I*R*T*H*D*A*Y




Thanks, Bill! As a birthday present, I'm hoping the sky clears up tonight so I can view SN 2014J.


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george golitzin
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Re: Supernova in M82 new [Re: BillP]
      #6335192 - 01/25/14 04:18 PM

I make it mag -21 if it were located at alpha-cen.

The difference in magnitudes is 2.5 times the common log of the ratio of intensities, which in turn is the square of the inverse ratio of distances. So, the difference in magnitudes is:
m1 - m2 = 2.5* log[(11*10^6 / 4)^2] = 32.2,
and so the visual mag would be 11 - 32.2 = -21.2.

Very bright, that's for sure.

-geo

Edited by george golitzin (01/25/14 04:18 PM)


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Telescopic
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Re: Supernova in M82 new [Re: kywildcats]
      #6335342 - 01/25/14 05:33 PM

So is peak brightness tonight?

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nosmoke
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Re: Supernova in M82 new [Re: BillP]
      #6335471 - 01/25/14 06:57 PM

Quote:

Very sombering to think about, and what it would be like if something like this happened in the local neighborhood!




I've long thought a good sci-fi story would be about our sun going supernova (even though it can't) and what those on earth would experience (if only for a brief interval). Maybe have three scenarios, for those on the daytime side, those on the nighttime and those on the nighttime deep under ground.

A type II SN might be more interesting as there would first be a humongous neutrino burst to signal to start of the event, perhaps so intense that it's effects might be noticed. This (as I understand it) would be followed by a "normal" period (on earth) of about one hour as the shockwave from the core collapse makes its way to the sun's surface. Then the explosion occurs...


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Hesiod
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Re: Supernova in M82 new [Re: Telescopic]
      #6335476 - 01/25/14 07:03 PM Attachment (33 downloads)

I observed the supernova the last Fryday (24 January), h22 GMT ca from my home (town in Northern Italy near Milan), under substantial light pollution. Seeing 4 Pickering, temp 5°C; windy.
I used a 4" refractor with 52x, 60x and 80x.
At the lower power (using a superwideangle which framed both M81 and M82) the supernova was an easy catch.
Then I switched to a 12.5mm and 9mm T-Japan searching for the best view, which seemed to me the one provided by the 12.5mm, because of the brightness and "balanced" framing of M82. I do not know the actual brightness of the supernova, but I estimates not more than 11th and maybe somewhat less (I have based my estimate on the 10th mag star nearby, NW of M82).
I add a shot done the same night while framing M81 and some of its satellites. 30s @1600 ISO FL 540.

Edited by Hesiod (01/25/14 07:07 PM)


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Astrojensen
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Re: Supernova in M82 new [Re: Khyron]
      #6335494 - 01/25/14 07:16 PM

Quote:

Oh, come on now... This is a good opportunity to generate some interest in astronomy. While it's true that the media has a tendency to distort and outright mislead, I think we need to think of them as a valuable asset.

Let the media build up expectations and get everyone interested. Then, when they contact you, politely (and interestingly) explain the situation and what knowledge and optics are going to be required to actually see it. (But make sure you're accurate, since a few estimates have put the SN into the range of good binoculars within a few days.)

Then, be sure to direct interested folks towards an observatory or website where they can actually see the SN and learn more about it!




I do agree it's a good opportunity to generate some interest, but I just hate to always be the one who has to tell them that they can't see it (whatever the hype is about) with their tiny, hand-held binoculars, despite what the news on TV just said.

Most people have a hard time finding even major constellations, so how on earth are they supposed to find a supernova that is only faintly visible, in a galaxy that is going to be the dimmest, faintest thing they have ever imagined? It took me three years of practice, as a novice, before I could see M82 in handheld 10x50 binoculars, so...

And the only one around here with anything resembling an observatory scope is me...


Clear skies!
Thomas, Denmark


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Rutilus
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Re: Supernova in M82 new [Re: Astrojensen]
      #6335594 - 01/25/14 08:23 PM

Just got in from observing with a 4 inch refractor, Estimated the brightness at around mag.11.0.

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Kraus
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Re: Supernova in M82 new [Re: Rutilus]
      #6335784 - 01/25/14 11:15 PM


11:00p.m. EST and the nova is quite visible. It's nearly as bright as the two stars to the galaxy's southwest.

And the galaxy's tinge of red is coming through.

I shall wait another hour for it to get higher, into thinner atmosphere.


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Carol L

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Re: Supernova in M82 new [Re: Kraus]
      #6335803 - 01/25/14 11:36 PM

The weather's been absolute garbage in northcentral WI lately, but I finally got a small break in the clouds and saw the supernova at 6:45pm - I used the grab'n'go 120ST and the 7mm Axiom eyepiece (86x _ 57' fov). It was very easy to see despite the early hour and relatively low 37° altitude - it made M82 look quite odd compared to what I've been seeing all these years.

The wind chill was -16F, so I only stayed out for about 1/2 hour. After viewing the supernova, I popped over to the Orion Nebula, Jupiter, and the Crab Nebula for a few quick peeks.

TBH, I've had just about enough of this Arctic 'vortex' (or whatever they're calling it) - c'mon, Spring!


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Tyranthrax
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Re: Supernova in M82 new [Re: Carol L]
      #6335808 - 01/25/14 11:41 PM Attachment (25 downloads)

I was only able to get this in my 6se, tracking was being a bear it seems to get hat way when it's cold. This is honestly my first galaxy I ever did successfully and only me 3rd ccd camera image I hope I did alright. The SN appears to have streaked a tiny bit, I used the Orion g3 star shoot color imager with this scope. Feed back is appreciated. (it helps me know how I'm doing)

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Feidb
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Re: Supernova in M82 new [Re: Tyranthrax]
      #6335873 - 01/26/14 12:55 AM

Just observed it for several hours at the Las Vegas Astronomical Society outreach in North Las Vegas tonight. Got on the phone with my friend, Roger Ivester in North Carolina and we did a brightness comparison with local stars of known magnitudes and figured it is around 10.8 right now. Though it was quite light-polluted, was able to see it quite well, a lot better than the galaxy in fact.

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mwc11
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Re: Supernova in M82 new [Re: Tyranthrax]
      #6335880 - 01/26/14 01:05 AM

A nice treat for me this evening: first time seeing m81/m82, and a supernova in m82 to boot!

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Tyranthrax
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Re: Supernova in M82 new [Re: mwc11]
      #6335928 - 01/26/14 01:49 AM

clear skies a bit north of you, just cold

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MikeBOKC
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Re: Supernova in M82 new [Re: Tyranthrax]
      #6335973 - 01/26/14 02:43 AM

Our club put together a quickly organized public viewing of SN2014J tonight and we were very pleasantly surprised with the turnout and reaction -- 39 folks drove in some cases across two counties to meet in a truck stop parking lot and convoy 20 miles to the club observatory. About 15 club members were waiting with scopes and the SN was easily seen everywhere on the observing field . . . definitely the brightest SN in my observing experience! This is a terrific outreach opportunity for local clubs. WE added one new family membership tonight and made some new good friends who were most vocal and expressing their appreciation.

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mausf
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Re: Supernova in M82 new [Re: MikeBOKC]
      #6335985 - 01/26/14 03:17 AM

Just came from a 3 hr session, I was able to see the SN with no problem. I used my Meade 12.5", easy to spot.

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Kraus
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Re: Supernova in M82 new [Re: mwc11]
      #6336139 - 01/26/14 07:22 AM


M-82 won't be the same without SN 2014J. I say we need to name it after someone important. How about Ronald Reagan. We have a carrier and an airport named after him.

Ms. Carol,

No sketch?


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Rich (RLTYS)
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Re: Supernova in M82 new [Re: Kraus]
      #6336162 - 01/26/14 08:09 AM Attachment (52 downloads)

On the morning of the 25th I took this image of SN 2014J in M82 with the SLOOH Remote Observatories T2hm scope.

Rich (RLTYS)


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ggalilei
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Re: Supernova in M82 new [Re: george golitzin]
      #6336189 - 01/26/14 08:43 AM

Is 11-32 correct? Or should it be the apparent magnitude of Proxima -32?
Actually, M=m-5(logD-1) gives a magnitude of -16.6 at 10 Pc for the supernova, whereas for Proxima the result is +4.3. So, the difference seems to be right at about 21.

Edited by ggalilei (01/26/14 09:02 AM)


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Mike C
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Re: Supernova in M82 new [Re: ggalilei]
      #6336265 - 01/26/14 09:50 AM Attachment (48 downloads)

Last night (Saturday) I was able to follow up Wednesday's brief observation with the C8 SCT, with a slighter longer session using the 12" f/4 Newtonian. I initially sighted M82 with a 17mm Plossl (71x), and SN 2014J was immediately obvious. Wonderful views, with plenty of detail in M82, and the supernova shining out, were obtained with a 10mm Plossl (120x).

I then took 7 x 5-minute exposures at ISO 1600 (modded EOS 600D) to create the image below. My manual guiding was not perfect though, as I'd chosen too faint a guide star. Cloud quickly moved in, as was forecast, before I could obtain more (and/or better) sub-exposures.

Regards, and clear skies!


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eps0mu0
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Re: Supernova in M82 new [Re: Mike C]
      #6336703 - 01/26/14 01:28 PM

I made it out to a semi-dark site yesterday. M82 looked awesome through my friends Meade 10" SCT at ~120x. The SN was easily visible. In my Celestron 6" SCT, at 60x, M82 was not quite as bright and large as in the 10", but still showed detail. The SN was an easy stellar object. My first SN observation, ever!
Regards,
JCF


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Dave MitskyModerator
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Re: Supernova in M82 new [Re: eps0mu0]
      #6336848 - 01/26/14 02:50 PM

The brightness of SN 2014J is now listed as magnitude 10.0 at http://www.rochesterastronomy.org/snimages/

Dave Mitsky


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AstroFalcon
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Re: Supernova in M82 new [Re: Dave Mitsky]
      #6336921 - 01/26/14 03:28 PM

I went out last evening with my ST80. Star hopped over to M81/82 and viewed the duo for the first time. The SN was easily identifiable and the three objects were a spectacle to see.

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Bill Weir
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Re: Supernova in M82 new [Re: Dave Mitsky]
      #6337007 - 01/26/14 04:14 PM

Quote:

The brightness of SN 2014J is now listed as magnitude 10.0 at http://www.rochesterastronomy.org/snimages/

Dave Mitsky




Cool. Mostly because this is what I estimated last night when it was the last thing I looked before packing up at around 0200hrs. The galaxy was high in the sky, the seeing was almost perfect and the SQM reading from my backyard was 21.34. (man I love my backyard) With my 20" at around 400X the view was very similar to the above posted SLOOH image, except the stars were nice tight little dots instead of bloated like in the image. I have never seen the galaxy itself so detailed.

Bill


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Rutilus
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Re: Supernova in M82 new [Re: Bill Weir]
      #6337068 - 01/26/14 04:41 PM

Still bright this evening. Used a 120mm f/8.3 Achromat refractor.

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Special Ed
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Re: Supernova in M82 new [Re: canukLX90]
      #6337212 - 01/26/14 05:47 PM

Great pics from Rich and Mike C.

@Dave and @Bill--interesting that Rochester Astronomy is calling the mV at 10.0--S&T referenced a supernova expert this morning saying that the SN would peak a week from now at mag 10.5. Maybe we've been overtaken by events? Look here.


Quote:

Interesting report on your conditions and the SN. I applaud your persistence in observing this SN under really less than favorable weather conditions.

Here in the PNW we are catching a break from the usually
normal for this time of year clouds and rain. I feel almost
guilty having 40 deg F temps at midnight!
PJ




Thanks PJ and nice pic! You almost feel guilty?


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azure1961p
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Re: Supernova in M82 new [Re: Astrojensen]
      #6337872 - 01/26/14 11:46 PM

Quote:

I have just come in from a short session, chasing the supernova through some sucker holes in the clouds. It was very clear between the clouds and the supernova was easily visible in my 63mm Zeiss Telemator at 76x (11mm ES82) and 93x (9mm ES100). It was difficult at 47x (18mm ES82) and not visible on the bright background of M82 at 28x (30mm ES82).

At 93x, I could hold it steady, along with some clumps and dust bands in M82. A fantastic sight! At 28x, in the 3° TFOV of the 30mm ES82, I could see the huge disk of M81, which appeared bigger than normal, and also keep both NGC 3077 and NGC 2976 inside the field. A wonderful view.


Clear skies!
Thomas, Denmark




Nice to read your report with that refractor Thomas.

Pete


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JayinUT
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Re: Supernova in M82 new [Re: azure1961p]
      #6338013 - 01/27/14 01:40 AM

Reports of mag. 10.5 up to 11.3 coming in. On another note if your interested to see which Messier Galaxies have had supernova and their dates you can find that at this link. Here are the supernova by data in this link. The second link has more info on the actual SN. The last SN as many know and some might not in Messier 31 was in 1885 (that we've seen) and visually it got down to mag. 5.8.

I observed SN 2014J Friday and Saturday with the 14" and tonight with the 4. Sketched the SN each night as well. Now weather will play a factor after tomorrow for me.


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stevecoe
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Re: Supernova in M82 new [Re: JayinUT]
      #6338048 - 01/27/14 03:19 AM

Hi Jay;

Thanks for the links, lots of great info. It was easy in a friends 22 inch last night and I would estimate 11.0 at that time. Like you, we are under lots of clouds for the next 36 hours or so.

Take care;
Steve Coe


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hokkaido53
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Re: Supernova in M82 new [Re: JayinUT]
      #6338389 - 01/27/14 09:49 AM

Quote:

Reports of mag. 10.5 up to 11.3 coming in. On another note if your interested to see which Messier Galaxies have had supernova and their dates you can find that at this link. Here are the supernova by data in this link. The second link has more info on the actual SN. The last SN as many know and some might not in Messier 31 was in 1885 (that we've seen) and visually it got down to mag. 5.8.

I observed SN 2014J Friday and Saturday with the 14" and tonight with the 4. Sketched the SN each night as well. Now weather will play a factor after tomorrow for me.



I saw the SN last night around 8pm, and it did seem brighter than the night before.

Roy in Taos


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nirvanix
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Re: Supernova in M82 new [Re: hokkaido53]
      #6338411 - 01/27/14 10:02 AM

I think it's marginally brighter than when I first saw it last Wed. I didn't need averted vision last night for the same scope/eyepiece combo that required it then.

Any guesses as to how bright it'll get? No chance of mag 8 or better?


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JasonBurry
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Re: Supernova in M82 new [Re: nirvanix]
      #6338680 - 01/27/14 12:32 PM

Wonderful group of images and observations in here!

I got out my own 8" dob on Friday night, -16C, clear, green zone. Spent about an hour on M82, enjoying the view at 37x, 100 and 200x, and was able to discern the SN at all magnifications. I'd agree with many others here who have reported a brightness in the vicinity of mag 11 on Friday night, perhaps a touch brighter, but well shy of mag 10 at that time. To my eye, its colour was more blueish than the other nearby mag 10-11 field stars. I was able to observe the SN without averted vision at all powers.

Following that, I sailed thru M42, enjoying the trapezium and its environs, following billowy clouds in the great bat-wing arc, and finished the night on Jove, with 3 moons visible, Europa in transit behind the giant.

Why don't I do this more often???

J


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Niels2011
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Re: Supernova in M82 new [Re: nirvanix]
      #6338683 - 01/27/14 12:33 PM

Enjoying reading the nice reports, and thanks for the heads up. I'm hoping it'll stay bright enough so I can show my kids before their bed-time when the clouds eventually clear! Myself I saw it last night and really enjoyed the views in my 8" newt: at 36x it was an easy averted vision object in the 2.3* field of my 28 UWAN, and the wide view of M82, M81 and NGC3077 was very lovely, as Thomas commented above. At higher mags I could see it sharply with direct vision. The night was quite good for my orange zone, with good transparency and surprisingly good seeing. I could see the dark dust lane crossing the galaxy with averted vision and the brighter area at the opposite end from the SN. Later Jupiter showed some very good detail in the bands and around the GRS. But it was a night mainly for M82! I had a go with my 8x42s before looking in the scope and fancied that M82 had a slight stellar brightening with av, but I think I might have been fooling myself because I couldn't see it later.

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Kraus
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Re: Supernova in M82 new [Re: Niels2011]
      #6338744 - 01/27/14 01:00 PM


Mike C.,

That's an excellent 'manually' guided photograph. I had to look closely to see stretched stars.


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Kevdog
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Re: Supernova in M82 new [Re: Special Ed]
      #6338763 - 01/27/14 01:10 PM

Quote:

Great pics from Rich and Mike C.

@Dave and @Bill--interesting that Rochester Astronomy is calling the mV at 10.0--S&T referenced a supernova expert this morning saying that the SN would peak a week from now at mag 10.5. Maybe we've been overtaken by events? Look here.


Quote:

Interesting report on your conditions and the SN. I applaud your persistence in observing this SN under really less than favorable weather conditions.

Here in the PNW we are catching a break from the usually
normal for this time of year clouds and rain. I feel almost
guilty having 40 deg F temps at midnight!
PJ




Thanks PJ and nice pic! You almost feel guilty?




LOL, I'm still viewing in shorts. Should I feel guilty?

Wanted to get out this weekend but it was clear Friday, but I was too tired. It was cloudy Sat and Sun! Hoping tonight, but the clouds would have to clear. Can't wait too long.... don't want it to start fading!


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jdbastro
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Re: Supernova in M82 new [Re: Kevdog]
      #6338825 - 01/27/14 01:48 PM

Took this real-time video (25 fps) Saturday night (Jan-25-2014) using a Gen 3 image intensifier and a Mewlon 250 telescope.

Check it out:

M82 Supernova Real-Time Video Link


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Doug Culbertson
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Re: Supernova in M82 new [Re: Niels2011]
      #6338828 - 01/27/14 01:51 PM

Finally had a clear night this past Saturday, so I took advantage of it to see SN 2014J. Seeing was very good (Pickering 8) and it was a very comfortable 48F. In my CPC800 the SN was immediately obvious at 73x-145x. This is what I love about the Leica zoom; it allows me to try a wide range of mags without swapping eyepieces! My estimate of magnitude was approximately 11. Since I am usually off by about a half magnitude, that would have put it around 10.5. Judging by some of the estimates that I have read, I guess that I was pretty much on my usual mark.

After taking in a bit of eye candy (M42, M37, etc.), I was shut down quickly by my corrector dewing over. I knew that it would be bad for dew since my chair was wet before I had finished setting up the telescope. I don't know why I keep putting off buying a dew heater.


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Mike C
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Re: Supernova in M82 new [Re: Kraus]
      #6339056 - 01/27/14 03:49 PM

Quote:


Mike C.,

That's an excellent 'manually' guided photograph. I had to look closely to see stretched stars.




Many thanks, Kraus! Also thanks to Kev for the earlier comment.

Been enjoying these reports, and it will be interesting to following this SN over the next few weeks. Looks like a lot of cloud and rain here for the next few days, though I know I'm not alone with that forecast!

Regards,


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Bill Weir
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Re: Supernova in M82 new [Re: Kevdog]
      #6339143 - 01/27/14 04:34 PM

Quote:

Quote:

Great pics from Rich and Mike C.

@Dave and @Bill--interesting that Rochester Astronomy is calling the mV at 10.0--S&T referenced a supernova expert this morning saying that the SN would peak a week from now at mag 10.5. Maybe we've been overtaken by events? Look here.


Quote:

Interesting report on your conditions and the SN. I applaud your persistence in observing this SN under really less than favorable weather conditions.

Here in the PNW we are catching a break from the usually
normal for this time of year clouds and rain. I feel almost
guilty having 40 deg F temps at midnight!
PJ




Thanks PJ and nice pic! You almost feel guilty?




LOL, I'm still viewing in shorts. Should I feel guilty?

Wanted to get out this weekend but it was clear Friday, but I was too tired. It was cloudy Sat and Sun! Hoping tonight, but the clouds would have to clear. Can't wait too long.... don't want it to start fading!




Feel guilty about what, being too much of a slacker to observe when the conditions are favorable and then being clouded out later?

Personally I'd rather be observing 5+ hours at a time in warm cloths than not observing at all in shorts. ; )

Besides that, I like the vegetation around me to be green.

Bill


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Mike Harvey
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Re: Supernova in M82 - BRIGHTENING RAPIDLY! new [Re: Bill Weir]
      #6340056 - 01/28/14 01:09 AM

I must say, I'm pleasantly surprised!

After reading of binocular sightings of the supernova, I decided to take the APM 100's out - not really expecting to see anything...especially given a slight haze that only allowed a ZLM of ~4.5!

At 48X, the supernova is visible with averted vision and, for fleeting moments can be held with direct vision!

While I was only able to observe for a few minutes before clouds intervened, I estimate the supernova magnitude at ~10.5.

Considering that it has brightened some 1-1/2 magnitudes in less than a week, we might have something to take the sting out of Comet ISON's failure!

If the weather will finally cooperate, this should be a very interesting sight in the 28" at Chiefland this weekend!

Mike H.

Edited by Mike Harvey (01/28/14 01:14 AM)


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Mike Harvey
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Re: Supernova in M82 - BRIGHTENING RAPIDLY! new [Re: Bill Weir]
      #6340063 - 01/28/14 01:14 AM

I must say, I'm pleasantly surprised!

After reading of binocular sightings of the supernova, I decided to take the APM 100's out - not really expecting to see anything...especially given a slight haze to the that only allowed a ZLM of ~4.5!

At 48X, the supernova is visible with averted vision and, for fleeting moments can be held with direct vision!

While I was only able to observe for a few minutes before clouds intervened, I estimate the supernova magnitude at ~10.5.

Considering that it has brightened some 1-1/2 magnitudes in less than a week, we might have something to take the sting out of Comet ISON's failure!

If the weather will finally cooperate, this should be a very interesting sight in the 28" at Chiefland this weekend!

Mike H.


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JayinUT
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Re: Supernova in M82 new [Re: Bill Weir]
      #6340084 - 01/28/14 01:39 AM

In case anyone hasn't seen this image, it is from the 10m Keck II telescope and isolates where the SN is in M82. This came out on The Astronomer's Telegram as 5789. Here are the links.

Here is the image link. SN 2014J is the red cross.

Here is the Jan. 23 telegram link that has the info on the image.


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dgg99
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Re: Supernova in M82 new [Re: JayinUT]
      #6340230 - 01/28/14 05:21 AM

I finally observed the SN with my 120mm refractor. It is an easy object, embedded in the west "wing" of the galaxy. I measured magnitude 10.6 using an AAVSO chart. The SN started to appear at 45x (great view with M 81 sharing the field!), but the best view was at 111x. This is possibly the most spectacular SN I've seen, because it is in a very bright and easy galaxy. Great view!

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Special Ed
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Re: Supernova in M82 new [Re: Doug Culbertson]
      #6340597 - 01/28/14 10:30 AM

@ jdbastro--I like that video. According to my AAVSO chart, that star just to the right of the SN is mag 10.0 and the next one to the right is mag 10.6. The SN appears a little dimmer than the 10.6 star to my eye. I think your vid is close to 24 hours after my observation where I estimated the mag at 11.0


Quote:

...I don't know why I keep putting off buying a dew heater.




Doug, off topic but I wouldn't put off getting that dew heater. Every time your correcter dews up, little pieces of dust and pollutant particles get cemented to the correcter.


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Doug Culbertson
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Re: Supernova in M82 new [Re: Special Ed]
      #6340640 - 01/28/14 10:49 AM

Quote:




Doug, off topic but I wouldn't put off getting that dew heater. Every time your correcter dews up, little pieces of dust and pollutant particles get cemented to the correcter.




I actually ordered one right after I wrote that comment. In the past my dew shield seemed to do the job well enough, but the night I observed SN 2014J, I dewed up within an hour in spite of the dew shield.


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Special Ed
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Re: Supernova in M82 new [Re: Doug Culbertson]
      #6340766 - 01/28/14 11:33 AM



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cw00
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Re: Supernova in M82 new [Re: Special Ed]
      #6341122 - 01/28/14 02:14 PM

I was able to observe it for two hours during the weekend. The weather here in southern california has been horrible (local standard) for quite a while. Cloudy/foggy most of the nights last week and most of the nights in the near future. I am really glad that I did not wait for better condition as I may miss it by the time that happens. I live in between red/orange zone so light pollution is bad. Using 11in dob, I cannot see it at all (even with averted vision) using 40x. Using 100x, the supernova is bright while M82 is just a shade of gray. This is the first supernova for me. It looks like the supernova is somehow superimposed onto M82. Definitely a highlight for me during my short observation career (togather with the North America nebula).

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nytecam
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Re: Supernova in M82 new [Re: cw00]
      #6341202 - 01/28/14 02:46 PM Attachment (39 downloads)

Here's my 30s colour pic from last night and my obsy set-up

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acr_astro
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Re: Supernova in M82 new [Re: nytecam]
      #6341363 - 01/28/14 04:08 PM

Hi,

tonight I could have another look at the SN - with 10mm Celestron X-cel EP and the 10" f/5 Dobsonian.

This time I'll participate the wonderful "mag-guessing" : So I'd say the SN is about as bright as TYC 4383-744-1 which is given in Carte du Ciel as 11.2mag.

Achim


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Tom Laskowski
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Re: Supernova in M82 new [Re: acr_astro]
      #6341413 - 01/28/14 04:33 PM

Will try tonight. It's very clear, but the temp is going to be -5. Brrr.

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ggalilei
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Re: Supernova in M82 new [Re: nytecam]
      #6341593 - 01/28/14 06:21 PM

Nice image, nytecam.
The SN looks almost as bright as the nearby mag 10 star.


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Tom Laskowski
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Re: Supernova in M82 new [Re: ggalilei]
      #6342006 - 01/28/14 10:19 PM

I didn't plan very well. I can't find a place to set up because the snow is too deep in my yard.

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dgg99
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Re: Supernova in M82 new [Re: Tom Laskowski]
      #6342501 - 01/29/14 07:31 AM Attachment (33 downloads)

Here's an sketch from my observation two nights ago.

Edited by dgg99 (01/29/14 07:32 AM)


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Niels2011
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Re: Supernova in M82 new [Re: dgg99]
      #6342517 - 01/29/14 07:47 AM

Very nice sketch Diego.

My brief obs from that night with kids: I managed to find it briefly for the kids (5 & 8) between blowing clouds in a tight pre-bedtime slot. My youngest was particularly excited by the idea that the tiny pinprick he could see was a vast explosion far away. It was really good going for him to even see the galaxy (his first) I thought. My older boy has seen one or two galaxies before and knew what to look for, so saw the SN easily (his first), but didn't show so much reaction - I think he was pleased, but he probably doesn't have my sense of the rarity of the pleasure!

Regards
Niels


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rockethead26
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Re: Supernova in M82 new [Re: dgg99]
      #6342527 - 01/29/14 07:59 AM

Quote:

Here's an sketch from my observation two nights ago.




Excellent sketch, Diego. Dim that down to bare visibility and that's exactly what my wife and I observed last night. Here's my report:

Finally got a chance here in Indiana to look for the SN. It warmed up to a balmy 7° here at 8PM tonight, so I took out the 80ED with the 8-28 Baader zoom. Fortunately Ursa Major is visible from by backyard which is much darker than the front. Transparency was a bit above average and seeing was the same.

It took me about 5 minutes to find M82 (I'm in a red zone with severe neighborhood light pollution). At 25x the galaxy was just visible. Zooming to 50x, the M82 became more distinct, but even with averted vision, I couldn't see the SN. Maxing out the zoom at 75x gave me what I needed. I couldn't quite hold the SN with direct vision, but it was very easy and steady with averted vision. My wife even came out and managed to see it. Her first SN!

I'm glad we finally had a clear night here before the show was over. My relatively new Grab 'n' Go was exactly what I needed tonight. Twenty minutes, start to finish.


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pdfermat
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Re: Supernova in M82 new [Re: rockethead26]
      #6342669 - 01/29/14 09:46 AM

I've been chomping at the bit to image this, and even though the temp was a brisk -5 F with wind chills to -35 F, I was determined to take advantage of the clear skies:



I was amazed at how bright the SN was when the first sub appeared on the screen - it looked like a field star.


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davebuechler
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Re: Supernova in M82 new [Re: rockethead26]
      #6342682 - 01/29/14 09:53 AM

Quote:

here in Indiana to look for the SN. It warmed up to a balmy 7° here at 8PM tonight,




JIm, glad you got a look at the SN last night. I had a look at in my 10" RC but the conditions were not great. I had better views a few nights ago in my little 4" refractor.

Last night around the same time(8PM) I was out looking that direction and the sky lit up with a great flash of light. It was a bright bolide. I had closed my eyes to protect my night vision (thinking it was oncoming headlights) and missed it.

This morning I found out it was seen also in Ohio. Wondering if anyone else saw it? Given that many might be out looking in the direction of the new SN in the north.


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rockethead26
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Re: Supernova in M82 new [Re: davebuechler]
      #6342734 - 01/29/14 10:19 AM

Quote:

Quote:

here in Indiana to look for the SN. It warmed up to a balmy 7° here at 8PM tonight,




JIm, glad you got a look at the SN last night. I had a look at in my 10" RC but the conditions were not great. I had better views a few nights ago in my little 4" refractor.

Last night around the same time(8PM) I was out looking that direction and the sky lit up with a great flash of light. It was a bright bolide. I had closed my eyes to protect my night vision (thinking it was oncoming headlights) and missed it.

This morning I found out it was seen also in Ohio. Wondering if anyone else saw it? Given that many might be out looking in the direction of the new SN in the north.




Thanks, Dave! Glad you at least "almost" saw the bolide. I might have another chance tonight before the cloudy weather moves in again. Maybe the same for you .


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Erik Bakker
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Re: Supernova in M82 new [Re: acr_astro]
      #6342760 - 01/29/14 10:28 AM

Thanks for the alert on this stunning Supernova!

Last night, I observed the Supernova in M82 for the first time and under very clear skies. In my little C5, the SN was easy to see at 40x and absolutely stunning and even easier to see at 65x. What a beautiful sight to see M82 with a Supernova in it!

I also tried with my 7x42 and 10x32 binoculars. At these low magnifications, one cannot directly resolve the SN from the galaxy, that is obvious once you have observed the SN with higher magnifications in a telescope or bigger bino.

Weather permitting I will try the M82 SN with my 18x70 18x70's and see if that is enough aperture and magnification to actually resolve the SN.


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davebuechler
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Re: Supernova in M82 new [Re: Erik Bakker]
      #6342790 - 01/29/14 10:39 AM

Quote:

I might have another chance tonight before the cloudy weather moves in again. Maybe the same for you .




The CSC looks even better for tonight than last night. My scope is set up, definitely cooled, and ready for tonight. I will probably try to do a short imaging run, but from my deck I don't expect good results.

Good luck to you!


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JasonBurry
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Re: Supernova in M82 new [Re: davebuechler]
      #6342903 - 01/29/14 11:37 AM

Out again last night in my green zone with my 8" dob, it seemed to me that the SN had brightened noticably since Friday night. It's _JUST_ fainter than the adjacent mag 10 star, and notably brighter than the next star out on that chain... I'd peg it at 10.25-10.5 now. The seeing was pretty good, but the transparency was mediocre, making the whole scene a bit muddy/low contrast.

Jupiter was pretty nice, though, but I wimped out on the -12C with 15kph winds after half an hour.... Didn't make it long enough to see the GRS transit. Wind's a killer.

J


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Tom Laskowski
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Re: Supernova in M82 new [Re: JasonBurry]
      #6344172 - 01/29/14 09:52 PM

Caught it tonight with my 5" Mak from my light-polluted backyard with 16" of snow. M82 barely visible. Star pattern pinpointing the SN made it easier to identify. Still not very easy but I'll take it. My 16th SN.

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OrdinaryLight
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Re: Supernova in M82 new [Re: Tom Laskowski]
      #6344314 - 01/29/14 11:32 PM

I also got to see the SN tonight from my red zone backyard; clear skies and 17ºF. Most of the big dipper was hidden by trees so I used a planisphere to orient myself and then broke out the pocket star atlas. I star hopped from Dubhe by way of carbon star VY. Once in the area I first spotted M81 using averted vision at 30x in my 4" refractor. Then I panned over a bit to find M82. The SN was visible around 75x but the best view was at ~130x. SN was steady with averted vision and just on the edge of direct vision.

Once acquired I went inside to tell my wife who came out to look. 1st observed SN, 2nd and 3rd galaxies for both of us.


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EuropaWill
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Re: Supernova in M82 new [Re: OrdinaryLight]
      #6344440 - 01/30/14 01:31 AM

I just came in from standing in the snow (11 deg f) with my C90 on my photographic tripod for about an hour. I spotted M81 and M82 with the GSO 32mm Plossl. Then centering M82 I increased the magnification from 39x to 63x using the ES68 20mm where I spotted the SN. I could see it with averted vision by looking at the bright star right next to the galaxy. Amazing!

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Re: Supernova in M82 new [Re: EuropaWill]
      #6344455 - 01/30/14 01:57 AM

I observed SN2014J Tuesday evening from our astro clubs yellow site south of Kansas City with my Meade 10 ACF. I couldn't get over how bright it was, being some 12 MLY away from earth. It looked like it was around mag. 10-ish. It was very cold that evening (10F), but it was worth it to see a rare event like this.

Bill


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Rich (RLTYS)
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Re: Supernova in M82 new [Re: Bill Barlow]
      #6344667 - 01/30/14 08:25 AM

I was finally able to observe SN 2014J last night (1/29) with my 10" refl at 174x. I estimated it's magnitude at 10.8.

Rich (RLTYS)


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Re: Supernova in M82 new [Re: Rich (RLTYS)]
      #6344767 - 01/30/14 09:36 AM

Rich,
Glad you got to lay eyes on the SN. If you think it is 10.8 it must appear just a hair dimmer than that nearby 10.6 star?

Aquarellia in Provence, France has made a series of 9 mag estimates (the blue crosses) that are very interesting to see:
http://astro.aquarellia.com/

I went out last night (Jan 29th) about 8:30 local and tried for the SN with my 15x70 binoculars. I suspected it a couple of times but could not confirm. My eyepiece lenses kept fogging up in the 1°F (-17°C) temps which added an extra layer to my frustration.

Then when I tried to unlimber the C14, it wouldn't work right--I think the series of minus zero nights we've had doesn't agree with it. I'm going to try again tonight (it's only supposed to go down to 15°F).

@Diego--that is a really nice sketch!


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Re: Supernova in M82 new [Re: Special Ed]
      #6344830 - 01/30/14 10:15 AM

Hi guys,

Finally had a clear night last night in upstate NY. Around 10 pm, temp 6 degrees F, beautiful dark transparent sky. The SN was easy in my C11 with 35 Panoptic (80X) and obvious in my AP160 with 17mm Ethos (71X). I concur that about mag 10.8 seems right.

My AP 1200 mount didn't sound too happy with the cold temps, but got the job done!

I couldn't help but think what this tiny speck of light represents---who knows, were "nearby" civilizations eradicated?

Amazing, hope to get out again tonight.

Steve


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Re: Supernova in M82 new [Re: steven40]
      #6346093 - 01/30/14 09:41 PM

Last night I battled the cold and deep snow in my suburban back yard to set up my 4" refractor to observe, among other things, the supernova currently visible in M81. In my skies, It was easy to see with averted vision and could also see it blink in an out with direct vision.

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Re: Supernova in M82 new [Re: djeber2]
      #6348174 - 01/31/14 10:13 PM

I think it declined in brightness from my look last Saturday, January 25th.

Next object, Thor's Helmut.


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Re: Supernova in M82 new [Re: Kraus]
      #6348178 - 01/31/14 10:17 PM


Herr Diego,

That ain't no sketch. That's a photograph. You ain't fooling me.

So we should call Diego, "The Camera".


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Re: Supernova in M82 new [Re: nytecam]
      #6348192 - 01/31/14 10:28 PM Attachment (30 downloads)

Quote:

Here's my 30s colour pic from last night and my obsy set-up




From nothing to do I created a collage to mirror the one above by Nytecam - same scope as his (my 12" LX200GPS), very different setting, and the sketch I made this week at my remote site that is in the picture. I thought it was fun to juxtapose with Nytecam's; now I am not certain any more why I did this but will post anyway

P.S. The letters besides "SN" for supernova are O'Connell and Mangano's (1978) nomenclature of the bright regions in the core. The seeing this time was too bad to see individual starlike superclusters within regions A and F that I had seen previously with this scope. 125-375x with Pentax 8-24 mm.


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sixfootzero
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Re: Supernova in M82 new [Re: IVM]
      #6348258 - 01/31/14 11:20 PM

My son and I have been exploring with his XT8, and we looked for M81 & M82 a few months ago without success. News of SN2014J gave us an excuse to try again!

As far as I can tell, based on the Dark Sky Finder, we are in an Orange Zone but there's a WalMart about a mile to my North and I'll call that a localized Red Zone... It makes finding M81 & M82 very tricky, but I've figured out that I can line up on Dubhe and Phecda. They seem to be separated by about 10 degrees, and if I aim for a spot another 10 degrees past Dubhe I'm pretty close. After that, I lean on the 2 degree FoV of my 38mm SWA... I was finally able to spot M81/M82 briefly on Tuesday, right as clouds were rolling in for our ice storm, the seeing was terrible and I was only about 50% sure I saw the SN.

Tonight was the first clear night since, and I was determined to try again. This time there is no doubt. After getting nicely dark adapted, I was able to find the galaxies, and I started to zoom in for a better view. After several steps I maxed out at 200x, and the view was great! My mother and son were both able to see it, and were excited to see their first super nova.

There are many great images and sketches in this thread, and helped me confirm I was looking at the right thing!


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Re: Supernova in M82 new [Re: IVM]
      #6348972 - 02/01/14 11:49 AM

Quote:

Quote:

Here's my 30s colour pic from last night and my obsy set-up




From nothing to do I created a collage to mirror the one above by Nytecam - same scope as his (my 12" LX200GPS), very different setting, and the sketch I made this week at my remote site that is in the picture. I thought it was fun to juxtapose with Nytecam's; now I am not certain any more why I did this but will post anyway

P.S. The letters besides "SN" for supernova are O'Connell and Mangano's (1978) nomenclature of the bright regions in the core. The seeing t his time was too bad to see individual starlike superclusters within regions A and F that I had seen previously with this scope. 125-375x with Pentax 8-24 mm.


Hi IVM - I admire your tenacity ( and your wide open skies) but with typically 2" of rain every third or forth day tempts are an unseasonal 'warm' in lower 50sF during the day plus some wind chill at night but under my LP my camera solve everything for me - if not for others:-) Excellent sketch btw :-)

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Re: Supernova in M82 new [Re: Dave Mitsky]
      #6349440 - 02/01/14 03:43 PM

Quote:

The brightness of SN 2014J is now listed as magnitude 10.0 at http://www.rochesterastronomy.org/snimages/



Dave Mitsky




The magnitude figure at that site was changed to 10.6 a few days ago and is now listed at 10.2!

Dave Mitsky


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Re: Supernova in M82 new [Re: Dave Mitsky]
      #6349604 - 02/01/14 05:15 PM

I have observed the SN in M82 this evening with a 72mm WO Megrez ED and a 1911 60/850mm Zeiss achromat. In the 72mm WO, the SN was faintly visible with a 9mm ES100 (48x), but quite easy at 96x (9mm ES100 + 2x barlow), despite quite hazy conditions and a somewhat bright sky, from the local light pollution, in combination with the haze). In the uncoated 60mm, the view was surprisingly good at 97x (8.8mm ES82), but the SN was only dimly visible at 47x (18mm ES82), due to the haze. Because of the haze, it was difficult to judge, whether the SN was brighter than last time, but it most likely was, because that is what you all report.


Clear skies!
Thomas, Denmark


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Re: Supernova in M82 new [Re: Astrojensen]
      #6350522 - 02/02/14 02:29 AM

This morning, under very clear and dark skies, I observed the SN in M82 with my Nikon 18x70 when it was near the zenith. The view was beautiful, with the SN visible with direct vision most of the time. It was much easier in the 18x70 than I expected. At 18x, it was quite easy to resolve it from M82. Observing with two eyes helped in being able to see both the SN and the M81/M82 pair. I estimated the brightness at m 10.1 at 01.00 UT at 2014-2-2. It was ever so slightly less bright than the nearby m 10.0 foreground star, but much brighter than the 10.6 foreground star.

Later on I observed with my C5 at 40x and 65x and could more accurately confirm the above observation. The exciting thing is that the SN is still brightening!


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dgg99
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Re: Supernova in M82 new [Re: Erik Bakker]
      #6350644 - 02/02/14 05:46 AM

I was finally able to observe the SN again last night. To me, it looked somewhat brighter than my last observaction! It appeared slightly brighter than the 10.6 comparison star, my estimate was 10.4 at 22h UT, 1 Feb. At 77x to 150x it stands out nicely from the galaxy.

By the AAVSO light curve, it is apparently at or near maximum.

Thanks for your comments about my sketch!


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Re: Supernova in M82 new [Re: dgg99]
      #6352505 - 02/03/14 03:23 AM

Visually, the SN appears yellowish to my eyes. Could be some dust in M82 the light is passing through or the color of the SN itself. Anybody know?

Last night, 2014-2-2 22.30 UT, under slightly less transparent skies than the last nights, the SN was a bit more difficult to observe in the 18x70, but still there most of the time. In the FS102 and MW 16" f/5, the SN looked like it may have reached it's brightness peak. Less bright than the close 10.0 star and almost as bright as the 10.6 star, I estimated it at around Mv 10.4.


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goodricke1
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Re: Supernova in M82 new [Re: Erik Bakker]
      #6352797 - 02/03/14 09:14 AM

Quote:

Visually, the SN appears yellowish to my eyes. Could be some dust in M82 the light is passing through or the color of the SN itself. Anybody know?




Same here, but it seems the correct colour is a reddish/orange tint, caused indeed by galactic dust:

http://www.skyandtelescope.com/observing/highlights/Bright-Supernova-in-M82-2...


Quote:

Last night, 2014-2-2 22.30 UT, the SN was... Less bright than the close 10.0 star




By now there can't be many more well-observed 10.0 stars than this one


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Re: Supernova in M82 new [Re: goodricke1]
      #6353242 - 02/03/14 01:07 PM

I was unable to see any color to SN2014J with my 28 inch at any magnification from 155x to 695x on January 23, 24 and 25, but hopefully I'll get another shot at it this week. It's looked just as colorless as the nearby comparison stars to my eyes.

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IVM
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Re: Supernova in M82 new [Re: hbanich]
      #6353347 - 02/03/14 01:52 PM

To mine too (12", 125-375x, blue-zone site, Jan 29).

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Re: Supernova in M82 new [Re: IVM]
      #6353903 - 02/03/14 06:13 PM Attachment (28 downloads)

@ Howard & IVM--I didn't see any color on Jan 25th but I did on Feb. 2nd.

I went out early on Groundhog Day to get another look at the supernova in M82 one week after my last observation.

The SN has peaked in brightness according to reports on the Internet. It had definitely increased in brightness since my last observation. Also, this time I was able to see the orangish color of the SN that has been reported by other observers.

This animation is a rather crude attempt to show how the SN appeared in the eyepiece. What is hard to render is the intense appearance of the supernova compared to the 10.6 mag star (second to the right from the SN in the sketch). It's hard to describe exactly, but that intensity made the supernova appear brighter than I think it actually was. Maybe because it was exploding?

The confusion on the Internet of mag estimates reflect my own confusion. S&T reports it peaked at 10.5; rochesterastronomy reports 10.0 then 10.2. What's up with that?

I tried using the defocused star method that I use on comets but, since the SN is in front of the nebulosity of M82, it would disappear when I defocused it while the 10.6 star would still be there.

One more question: how do you interpret the AAVSO light curve chart? It has all these different colors of prevalidiated observations but no key. Sorry for my ignorance but there it is. TIA for any guidance on interpreting the light curve chart.

Anyway, here is the animation of my two observations (both are at 98x):


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Re: Supernova in M82 new [Re: Special Ed]
      #6353925 - 02/03/14 06:19 PM

Michael,

What you describe about the SN appearance very closely resembles what I see. At times I even get the feeling the brightness is rapidly fluctuating, kind of like planetary detail coming and going with the seeing.

Love your animation


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IVM
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Re: Supernova in M82 new [Re: Erik Bakker]
      #6354054 - 02/03/14 07:17 PM

First animation of a sketch I have seen, and excellently executed. I wish I knew the answers to the questions.

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Re: Supernova in M82 new [Re: IVM]
      #6354200 - 02/03/14 08:14 PM

Thanks! Glad to hear that others are seeing what I am seeing. I am hoping that someone here can help answer our questions.

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Re: Supernova in M82 new [Re: Special Ed]
      #6355249 - 02/04/14 10:33 AM

Last night the clear sky chart was showing mostly blue so I hauled out the 10" Orion dob to have a look. I got it and the faint cigar shape immediately. I was surprised how bright it was, it was as bright as the marker stars - or very nearly. Really stood out from the rest of the galaxy. Did not notice any colour at all though. Still, I'm glad I froze my tail off for a quick look - it's not every day you get a chance to see a SN in a galaxy so near.

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Re: Supernova in M82 new [Re: Darren]
      #6355654 - 02/04/14 02:11 PM

"One more question: how do you interpret the AAVSO light curve chart? It has all these different colors of prevalidiated observations but no key. Sorry for my ignorance but there it is. TIA for any guidance on interpreting the light curve chart." - Special Ed

Just how are you going about accessing the AAVSO light curve? If you are doing so through the Light Curve Generator itself, on the opening page that allows you to select the star of interest about half way down that page are a series of little boxes labeled as to the magnitude "type" (visual, U, B, V, etc.). Checking, or unchecking, each of those boxes allows you to select the exact magnitude type of data that will be plotted.

If you are somehow accessing a pre-plotted version of the AAVSO light curve through another link it should still have a magnitude "type" key just below the plot showing the meaning of dot's color coding.

Estimating the brightness of a supernova, situated like SN2014J is with the bright material of the host galaxy as its background, can be tricky business. In such instances the object of interest is seen against a bright backgroud with the comp stars in dark sky, the star seen against the bright background usually will look slightly fainter that it really is. The extra-focal method approach gives even worse results. The same is true in both cases for estimating the brightness of a comet's nucleus visually.

Incidentally, the current visual magnitude of SN2014J is +10.6 and is the peak of this supernova's brightness.

BrooksObs

Edited by BrooksObs (02/04/14 02:22 PM)


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Re: Supernova in M82 new [Re: BrooksObs]
      #6355990 - 02/04/14 05:19 PM

Tonight, from 21-22 UT, I had another long look at the SN under good transparency in 2 different scopes but at the same magnification (ca. 65x). In the FS102 the SN was very easy, in the C5 it was a little bit more difficult because of the slightly dimmer view.

The most striking difference between the SN in the FS102 and the C5 was that in the FS102 the SN looked quite a bit brighter relative to the 10.0 and 10.6 stars than in the C5. In the FS102 I estimated the Mv of the SN at 10.2, in the C5 at 10.6.

Apparently, the FS102 has better throughput and/or correction over a broader wavelength range than the C5. Striking difference! The FS102 does have a better startest at Arcturus than the C5, so it is definitely better corrected at the orange side of the spectrum.

I mention this, because in earlier observations I saw the SN as yellowish. Tonight I could not see that, perhaps because conditions (seeing and transparency) were a bit less good than when I could see the yellow color in the SN. Perhaps because the actual color of the SN has changed. We'll see how it develops!


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Re: Supernova in M82 new [Re: Erik Bakker]
      #6356588 - 02/04/14 10:24 PM

Last night I did a 2-hour imaging run on SN 2014J and it seemed to be quite a bit brighter on the final result than it did when I first photographed it a week and a half ago.

I was also able to clearly see it, in both my 10 and 8 inch Meade SCTs - even with bad tarnish on the 8-inch secondary it was still fairly visible.

If skies clear again tonight I am going to set up and collect some data to create an HDR dataset on M82. They're forecasting a few days of completely cloudless skies here in the NW and some frigid, extremely dry air so I hope that makes up for the encroaching moonlight. lol


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Re: Supernova in M82 new [Re: Special Ed]
      #6357721 - 02/05/14 01:27 PM

There are a couple of articles over at the Cornell University Library. I'll provide links to the PDF's for both.

The first one is on how SN2014J was discovered and is found at Link1.

The other is on estimating the First Light Time of Supernova SN2014J at this Link2.


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Re: Supernova in M82 new [Re: JayinUT]
      #6359027 - 02/06/14 04:04 AM Attachment (18 downloads)

This very morning, Feb 6th 5:00 LT, (no moon) with my friend Antoine we estimated the SN magnitude: 10.4/10.5, so slightly brighter than the 10.6 close ref star. The AAVSO curve (Visual, V and R) is here under. I feel that we are maybe optimistic but that’s how we estimate this winter “star”.
We can detect a fade orange-pink colour “around” this SN with our 12”, 10mm Delos EP (150x) as shown in the today’s sketch.

Edited by Aquarellia (02/06/14 04:08 AM)


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Re: Supernova in M82 new [Re: Aquarellia]
      #6359197 - 02/06/14 08:03 AM

I have viewed the SN both visually in my 130mm APO and with my Mallincam Xtreme. In both cases it appeared colorless. Easily seen visually. In the Mallincam it was extremely bright and jumped out like a teen ager's zit. I had been thinking of checking out M82 in the Mallincam in the middle of January but didn't. And to think - I could have been the discoverer! Doh!!!

/Ira


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Re: Supernova in M82 new [Re: BrooksObs]
      #6359545 - 02/06/14 11:38 AM

Quote:

"One more question: how do you interpret the AAVSO light curve chart? It has all these different colors of prevalidiated observations but no key. Sorry for my ignorance but there it is. TIA for any guidance on interpreting the light curve chart." - Special Ed

Just how are you going about accessing the AAVSO light curve? If you are doing so through the Light Curve Generator itself, on the opening page that allows you to select the star of interest about half way down that page are a series of little boxes labeled as to the magnitude "type" (visual, U, B, V, etc.). Checking, or unchecking, each of those boxes allows you to select the exact magnitude type of data that will be plotted.

If you are somehow accessing a pre-plotted version of the AAVSO light curve through another link it should still have a magnitude "type" key just below the plot showing the meaning of dot's color coding.




BrooksObs,
Thanks for your response and explanation. I was accessing the pre-plotted light curve through a link from the S&T observing blog for SN2014J. The blog has since added some info about what the B, V, and R stand for. I figured that B meant blue light, etc. but was confused by the V (green plots) and the "visual" (black plots). Being a lifelong learner is sometimes hard.

Quote:


Estimating the brightness of a supernova, situated like SN2014J is with the bright material of the host galaxy as its background, can be tricky business. In such instances the object of interest is seen against a bright backgroud with the comp stars in dark sky, the star seen against the bright background usually will look slightly fainter that it really is. The extra-focal method approach gives even worse results. The same is true in both cases for estimating the brightness of a comet's nucleus visually.

Incidentally, the current visual magnitude of SN2014J is +10.6 and is the peak of this supernova's brightness.

BrooksObs




Yes, I found that out the other night. I could defocus the SN out of apparent existence and the 10.6 comp star would still be in plain view. I ended up just comparing the two in focus and came up with 10.7 (trying to take into account the bright background). It looks like my visual estimate was a tenth or two off the majority of the pack. These mV estimates are tough but fun. BTW, the AAVSO is now saying that the SN peaked at 10.5 mag.

I use the Sidgwick method when trying to estimate the overall brightness of comets using a description of the different methods that you wrote for S&T--thanks! As with most things, one gets better with practice.


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Re: Supernova in M82 new [Re: Aquarellia]
      #6359551 - 02/06/14 11:42 AM

Quote:

This very morning, Feb 6th 5:00 LT, (no moon) with my friend Antoine we estimated the SN magnitude: 10.4/10.5, so slightly brighter than the 10.6 close ref star. The AAVSO curve (Visual, V and R) is here under. I feel that we are maybe optimistic but that’s how we estimate this winter “star”.
We can detect a fade orange-pink colour “around” this SN with our 12”, 10mm Delos EP (150x) as shown in the today’s sketch.




Michel,
Nice work on that sketch and all those mag estimates you did. Looks like you got pretty close on your last estimate--it's a tough one.


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Aquarellia
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Re: Supernova in M82 new [Re: Special Ed]
      #6359582 - 02/06/14 12:00 PM

Oh yes Michael, this SN is difficult to estimate, maybe more than a comet. However the deviation is not so important for us, poor visual observers.

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Re: Supernova in M82 new [Re: Aquarellia]
      #6365547 - 02/09/14 07:52 AM

Last night I observed the SN in M82 once again, in the C5 at 40,65 and 120x, now under less favorable conditions, but still with transparency about 4/5. The SN has faded to ca. Mv 10.6, comparable to the 10.6 magnitude reference star, but with it's visibility slightly dampened by the glow of M82. The yellowish color I observed on 29/1/2014 and 2/2/2014 is no longer visible.

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Aquarellia
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Re: Supernova in M82 new [Re: Erik Bakker]
      #6366182 - 02/09/14 02:01 PM

Here for fun my last post about this SN:
http://www.cloudynights.com/ubbthreads/showflat.php?Cat=0&Number=6366178&...


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Re: Supernova in M82 new [Re: Aquarellia]
      #6367575 - 02/10/14 02:13 AM

Thanks for posting your beautiful sketches and link. Like your sketches, my observations showed a yellow SN for a few days (29/1/2014 and 2/2/2014), but after that I could not observe the yellow color any more.


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Aquarellia
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Re: Supernova in M82 new [Re: Erik Bakker]
      #6367607 - 02/10/14 02:54 AM

Thanks Erik, indeed I'm not able to see any color from this date.
Thank you for your comment.


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Re: Supernova in M82 new [Re: Aquarellia]
      #6371077 - 02/11/14 08:07 PM Attachment (33 downloads)

Here is a sketch I did a few days ago in my XT8. I observed from my 5.9-6.0 magnitude site in Blacksburg, VA. Temperatures were in the mid-20's F with mild winds. The supernova was a good motivation for me to get some more practice with sketching at the eyepiece. It is a wonderful (though lengthy) way to log one's observations!

-Nick Anderson


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Re: Supernova in M82 new [Re: Nick Anderson]
      #6371712 - 02/12/14 06:59 AM

Quote:

Here is a sketch I did a few days ago in my XT8.




Wow, great sketch! That really captures the essence of the view.


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Re: Supernova in M82 new [Re: Nick Anderson]
      #6372044 - 02/12/14 10:55 AM

Great sketch Nick!

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dgg99
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Re: Supernova in M82 new [Re: Nick Anderson]
      #6372090 - 02/12/14 11:17 AM

Excellent sketch Nick! I agree with your estimate. Last night I was able to observe the SN again, and to me it was a little fainter than earlier. I estimated magnitude 10.8. Even with moonlight it was a pleasing sight.

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Aquarellia
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Re: Supernova in M82 new [Re: dgg99]
      #6372108 - 02/12/14 11:26 AM

Quote:

...I estimated magnitude 10.8. Even with moonlight it was a pleasing sight.



I fully agree with you all, my estimation was exactly 10.8, I just wait to observe when moon sets, so @ 5h00 UTC
Michel


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Re: Supernova in M82 new [Re: Aquarellia]
      #6373366 - 02/12/14 10:45 PM Attachment (29 downloads)

Here is my observation.
Joe


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Nick Anderson
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Re: Supernova in M82 new [Re: Tony Flanders]
      #6373533 - 02/13/14 01:55 AM

Thanks guys! It's the first negative I've ever tried, and I'm really pleased with how it turned out.

-Nick Anderson


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Re: Supernova in M82 new [Re: acr_astro]
      #6374024 - 02/13/14 12:17 PM

I would like to see the SN from my remote cabin where I have Bortle Class 1 skies but that won't be until mid May. I assume it will be visible for some time to come ? Any opinions ?

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Re: Supernova in M82 new [Re: j1234]
      #6374100 - 02/13/14 01:02 PM

Beautiful and true to (my) life sketches Joe. Thanks for sharing them.

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Re: Supernova in M82 new [Re: Erik Bakker]
      #6375311 - 02/14/14 01:06 AM Attachment (26 downloads)

I did this sketch from my driveway using my 20" on Feb 3. It's a combined panel with a sketch I did of the supernova in NGC 3448. The sketches were done minutes apart.

Bill


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Re: Supernova in M82 new [Re: Bill Weir]
      #6375494 - 02/14/14 07:07 AM

Very nice Bill!

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StarDust1
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Re: Supernova in M82 new [Re: Erik Bakker]
      #6379746 - 02/16/14 04:46 PM

Tonight I tried to see the supernova in M82 from my backyard with a 60mm apo. But I could not detect it:-( I saw the Bd+70 587 star in Ursa Major, it's the top right star from M82, a 9.14 magnitude star. I also saw the nearby star SAO 15014, a 9.28 magnitude star.

Anyone had luck to see the supernova in a 60mm scope?

Edited by StarDust1 (02/16/14 04:59 PM)


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Re: Supernova in M82 new [Re: StarDust1]
      #6380460 - 02/17/14 03:25 AM

Quote:

Anyone had luck to see the supernova in a 60mm scope?




Yes, but my skies are fairly dark.


Clear skies!
Thomas, Denmark


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Re: Supernova in M82 new [Re: Astrojensen]
      #6381464 - 02/17/14 05:37 PM

I think I saw the supernova in 63mm today. Unfortunately, the clouds just rolled in after I identified the stars in the field. If I did not make mistake it was a little bit fainter than 10.6 mag star, my guess is about 11.0. But I could not confirm the estimation as it was washed out within 3 seconds and it didn't come back... BTW, I was using power of 84x (Delos 10mm).

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Re: Supernova in M82 new [Re: Astrojensen]
      #6384105 - 02/19/14 05:14 AM

Tonight, I had a chance to observe M-81 and Supernova SN 2014J for the first time in about a month - albeit in brief moments of clear skies.

In the 10-inch LX6, I could easily tell that it was not as bright as it was back when I did imaging on it in January.


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Re: Supernova in M82 new [Re: SteveRosenow]
      #6386973 - 02/20/14 02:42 PM

I was out last night looking at the Moon, Mars, and Spica group. It looked impressive at 12.5mm but couldn't get in any closer, brightness of the Moon killed it.

Right before the Moon'light' did pop up too much though I got a great view of the M82 Supernova from my LP backyard. Definitely dimming now but still shows well. Can anyone tell me what the two bright stars are lined up above it (EP view) and what their brightness is? I've been comparing the SN to the brightness of those stars, and while they were all pretty much even in strength to my eyes in the beginning of the month, the SN is certainly now dimmer then them.


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Re: Supernova in M82 new [Re: OrlandoMatt]
      #6387233 - 02/20/14 05:26 PM

These are mag 10.0 and 10.6 stars. The line continues with V=12.0 star. I just observed supernova an hour ago. It is still nicely visible in 80mm telescope. I estimated its brightness to be about V=11.5.

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OrlandoMatt
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Re: Supernova in M82 new [Re: Sasa]
      #6387436 - 02/20/14 07:35 PM

Hey thanks Sasa!! I est. them at 10 a while ago but never really knew, I might be getting better at this

I would completely agree with 11.5 with those at 10 from what I saw last night.


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Re: Supernova in M82 new [Re: OrlandoMatt]
      #6390041 - 02/22/14 08:45 AM

Took another look at SN2014J last night with the club's C14 and it is still readily apparent at what I would guess a magnitude still under 12. Going to be fading rapidly soon I expect though, as we are more than three weeks post-discovery.

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Re: Supernova in M82 new [Re: MikeBOKC]
      #6390067 - 02/22/14 09:00 AM

It was dimmer last night compared to what I saw on 1/31/2014. This one is more than a month old since it was first spotted, a little long on the tooth according to the prediction (or guessing?). It might be a super super Nova.

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Re: Supernova in M82 new [Re: MikeBOKC]
      #6390472 - 02/22/14 12:42 PM

Mike, by "under 12", do you mean brighter? That's what I inferred from the context. Thank you.
Ken


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Re: Supernova in M82 new [Re: schang]
      #6390617 - 02/22/14 02:09 PM

We held a public star party for the Homestead National Monument last night with about 100 people in attendance. In my 9.25 inch SCT at 65x, the supernova was fairly easy to see, enough so that the untrained public eye could pick it out fairly easily from the glow of M82. I didn't see it at its brightest, but it still seems fairly bright (probably between 11 and 11.5 last night). Clear skies to you.

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Re: Supernova in M82 new [Re: kfiscus]
      #6390852 - 02/22/14 04:47 PM

Yes I was estimating it about like David did, maybe 11.5.

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Re: Supernova in M82 new [Re: David Knisely]
      #6390857 - 02/22/14 04:50 PM

I just came in from a few hours observing and also had a good look at the SN in M82 again. In my C5 at 40x, 65x and 120x the SN was beautiful, with visibility increasing with higher magnification. I estimated it under very good conditions at ca. Mv 11.4. Wonderful to whitness first-hand the quiet fading of this cosmic explosion.

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Re: Supernova in M82 new [Re: Erik Bakker]
      #6390890 - 02/22/14 05:13 PM

I just saw the super nova for the first time, with the Tak FC100D. I could not detect it from my back yard a few days ago with a 60mm apo. I tried many eyepieces and with all of them I saw it with averted vision in the 4". When I looked directly, I just barely could see it. And that was just for one or two seconds. This was from my backyard.

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Re: Supernova in M82 new [Re: StarDust1]
      #6390949 - 02/22/14 05:52 PM

Nice that you were able to see the fading SN with your new FC100 while it is still bright enough for smaller scopes.

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Re: Supernova in M82 new [Re: Erik Bakker]
      #6391060 - 02/22/14 06:53 PM

Thanks Erik! I was very excited when I finally saw the super nova.

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Re: Supernova in M82 new [Re: David Knisely]
      #6391224 - 02/22/14 08:55 PM

It was still pretty easy to spot at 100X with my 10" Dob, just not as bright when it was around 10.5 mag. It appears that you had a blast with this many people attending the star party. This would definitely make them a memorable night.

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Re: Supernova in M82 new [Re: schang]
      #6391493 - 02/23/14 12:34 AM

I finally had the opportunity to view SN 2014J through a telescope on Saturday night. My shoulder still gives me quite a bit of pain and the mobility of my right arm is far from fully recovered but Saturday afternoon's perfectly clear skies gave me the incentive to go to the Naylor Observatory again. Unlike Friday night, when a band of cloudiness appeared out of nowhere and hung in the northern sky the whole time I was there, the skies stayed clear long enough for me to observe the fading type Ia supernova through the club's 17" f/15 classical Cassegrain at 185, 216, 259, 324, and 360x. The best view was at 216x.

The conditions weren't the best and steadily deteriorated but, using magnifications of 185 and 216x, I was able to see the supernova more or less steadily with averted vision and occasionally with direct vision, with the scope stopped down to 6 inches.

Dave Mitsky


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Re: Supernova in M82 new [Re: Dave Mitsky]
      #6393597 - 02/24/14 02:39 AM

After some weeks of not observing the SN (and hardly any other stars due to clouds everywhere) I could have a brief glimpse yesterday evening with the 10" f/5 dob at v=125x.
The SN has dimmed significantly since I observed it a month ago and comparing it with other stars in the field, I'd say it's now about 11.6mag. Definitely much dimmer than the two brighter stars nearby.

Achim

Edited by acr_astro (02/24/14 02:41 AM)


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Re: Supernova in M82 new [Re: acr_astro]
      #6396536 - 02/25/14 03:49 PM

Observed 2014J again Monday night from a white zone. Fading but still worth a look.

First looked with a 8" F4 reflector, up to 475x - direct vision. Then with the 102mm F9.8 refractor up to 165x mostly with averted vision. Generally the views were better with higher mag.

Don't miss this SN


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Re: Supernova in M82 new [Re: Symui]
      #6398694 - 02/26/14 04:52 PM

I have yet to see my first Supernova. Hope to do it before the weekend is over. Does it look like any other star or is it bloated at all? I'm expecting it will still be easy in my C11.

Tnx,

Mike

Edited by mike174 (02/26/14 04:54 PM)


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schang
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Re: Supernova in M82 new [Re: mike174]
      #6398760 - 02/26/14 05:22 PM

Some people can see it with a 4" scope, so your C11 will be more than fine. The SN2014J is easy to spot at 100X or higher, it looks just like the neighboring stars around M82.

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Re: Supernova in M82 new [Re: schang]
      #6399364 - 02/26/14 11:35 PM

I observed the supernova again not long ago, using the 17" f/15 classical Cassegrain at the ASH Naylor Observatory. SN 2014J is definitely on the wane. The transparency is much better than it was on Saturday night so it was a bit easier to see in that respect but using the lowest magnification available (118x with a 55mm University Optics Plössl) I was only able to see SN 2014J intermittently with direct vision. However, I was able to hold it steadily with averted vision at that magnification. I also used 162, 202, 216, and 259x, with the best view occurring at 259x.

SN 2014J is currently listed at magnitude 11.7 at http://www.rochesterastronomy.org/supernova.html#2014J

Dave Mitsky


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Re: Supernova in M82 new [Re: mike174]
      #6399392 - 02/27/14 12:02 AM

Quote:

I have yet to see my first Supernova. Hope to do it before the weekend is over. Does it look like any other star or is it bloated at all? I'm expecting it will still be easy in my C11.

Tnx,

Mike




If you are seeing a star within the galaxy then that is it.

Bill


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Re: Supernova in M82 new [Re: mike174]
      #6399468 - 02/27/14 01:17 AM

Quote:

I have yet to see my first Supernova. Hope to do it before the weekend is over. Does it look like any other star or is it bloated at all? I'm expecting it will still be easy in my C11.

Tnx,

Mike




Mike,

On Wednesday night, the supernova looked similar to the way it did back in January in the image posted at http://meineko.sakura.ne.jp/ccd/PSN_J09554214+6940260.jpg

Dave Mitsky


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Tony Flanders
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Re: Supernova in M82 new [Re: mike174]
      #6399620 - 02/27/14 06:26 AM

Quote:

I have yet to see my first Supernova. Hope to do it before the weekend is over. Does it look like any other star or is it bloated at all? I'm expecting it will still be easy in my C11.




Supernovae look just like all other stars. This one is remarkable because it's directly on the axis of M82, forming a straight line with M82's two extraordinarily bright concentrations. It should be obvious in a C11 assuming that your skies aren't too bright.


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Re: Supernova in M82 new [Re: Tony Flanders]
      #6401148 - 02/28/14 12:44 AM

According to Sky Tools 3, it is now at mag 11.7. Back on Jan 30th, I observed it with my 60mm and 127mm, and found it to be about 10.6 or 10.7. On Feb 3rd, I observed it with the AR127 and estimated it at around 10.2. I have not had the opportunity to check it out since then however.

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Re: Supernova in M82 new [Re: kt4hx]
      #6401871 - 02/28/14 12:47 PM

Quote:

According to Sky Tools 3, it is now at mag 11.7. Back on Jan 30th, I observed it with my 60mm and 127mm, and found it to be about 10.6 or 10.7. On Feb 3rd, I observed it with the AR127 and estimated it at around 10.2. I have not had the opportunity to check it out since then however.




I finally got out again last night and it has definitely faded a lot. Still easy to pick out in the 18", even in orange skies, but not as striking as when it was in the mid 10's! But I doubt I could now pick it out in my 22x100 binocs like I did a month ago!


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kt4hx
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Re: Supernova in M82 new [Re: Kevdog]
      #6402579 - 02/28/14 08:23 PM

Quote:

Quote:

According to Sky Tools 3, it is now at mag 11.7. Back on Jan 30th, I observed it with my 60mm and 127mm, and found it to be about 10.6 or 10.7. On Feb 3rd, I observed it with the AR127 and estimated it at around 10.2. I have not had the opportunity to check it out since then however.





I finally got out again last night and it has definitely faded a lot. Still easy to pick out in the 18", even in orange skies, but not as striking as when it was in the mid 10's! But I doubt I could now pick it out in my 22x100 binocs like I did a month ago!




I also observe from an orange zone, but looking into a yellow one from the northeast to the southeast (my best direction). Though I didn't try my 20x80s then, I found it easy in the Jason 60mm (with ES 82 11mm - 82x), though M82 itself was pretty dim. Of course the galaxy was much brighter in the AR127. I also used the Z10 a few times and of course, the galaxy, its bright knots and bisecting lane, as well as the SN were quite easy.


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Re: Supernova in M82 new [Re: kt4hx]
      #6403119 - 03/01/14 02:39 AM

There's an interesting article on the supernova posted at http://newscenter.berkeley.edu/2014/02/27/closest-brightest-supernova-in-deca...

Dave Mitsky


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Re: Supernova in M82 new [Re: Dave Mitsky]
      #6403151 - 03/01/14 03:53 AM

I observed SN 2014J again on Friday night using the ASH 17" f/15 classical Cassegrain at 162, 185, 202, 216, and 259x. At the lower powers, I had trouble seeing the supernova with direct vision. However, the transparency may have varied during that time (I noticed some high clouds in the north when I exited the French Dome for a warm-up break) and the supernova became easier to see towards the end. Nevertheless, it was my impression that it was somewhat fainter than on Wednesday night.

Dave Mitsky


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ianatcn
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Re: Supernova in M82 new [Re: Dave Mitsky]
      #6404145 - 03/01/14 04:34 PM

Observed the supernova this evening in TV127 and found it using 17mm Ethos but it was better seen in Ethos 6mm. I think it must be below 12.0m now as I was having difficulty seeing it with direct vision. High cloud ended the viewing. Sky conditions before cloud very transparent.

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Re: Supernova in M82 new [Re: ianatcn]
      #6404819 - 03/01/14 11:16 PM

Had a look last night with my 20". It's still fairly obvious, certainly more than the one in NGC 3448 and way brighter than the one in M99. It was tough.

Bill


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Kaizu
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Re: Supernova in M82 new [Re: Bill Weir]
      #6405848 - 03/02/14 03:16 PM


It happened to be one clear night here in southern Finland. I used it to this. The supernova seems to be little brighter than the mag. 11.6 star near the galaxy.
Now I wait next clear night. Hopefully it will appear before the light summer nights.

Kaizu


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christheman200
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Re: Supernova in M82 new [Re: Kaizu]
      #6405852 - 03/02/14 03:20 PM

I've seen it twice from my light polluted back yard in Toronto with my 12" dob.

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Re: Supernova in M82 new [Re: christheman200]
      #6407018 - 03/03/14 06:49 AM

I've noticed SN 2014J appears to redder then on earlier images.

Rich (RLTYS)


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Re: Supernova in M82 new [Re: Kaizu]
      #6407456 - 03/03/14 12:34 PM Attachment (7 downloads)

Very nice pic of supernova - my 'snap' for March 1 below -data on image in 4x30s [averaged] - even 4s exp shows it well
----------------------------
Hi Rich - my recent spectrum showed a general absence of blue which would have made the SN 'reddish' but in the image below the SN is saturated to white



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Peter A.
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Re: Supernova in M82 new [Re: nytecam]
      #6408550 - 03/03/14 11:32 PM

I finally got a chance to get out and see it tonight. It was unbelievably cold (0 deg F with windchill of -10) but it's been too long since I've done any real observing. I use a 12" Orion truss dob. My 21mm Ethos showed the supernova the best but the 10mm Delos was close behind. The visibility varied with the scope shaking in the wind but it was always visible with direct vision in a decently dark site. I've only been observing for a year but this is my most exciting and special observation yet!

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okieav8rAdministrator
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Re: Supernova in M82 new [Re: nytecam]
      #6408581 - 03/04/14 12:14 AM

Great photos Nytecam!

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okieav8rAdministrator
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Re: Supernova in M82 new [Re: Peter A.]
      #6408594 - 03/04/14 12:22 AM

Quote:

I finally got a chance to get out and see it tonight. It was unbelievably cold (0 deg F with windchill of -10) but it's been too long since I've done any real observing. I use a 12" Orion truss dob. My 21mm Ethos showed the supernova the best but the 10mm Delos was close behind. The visibility varied with the scope shaking in the wind but it was always visible with direct vision in a decently dark site. I've only been observing for a year but this is my most exciting and special observation yet!





Congratulations on your observation Peter. I finally got to see it myself recently after weather and other pressing issues kept getting in the way. Such views makes braving the cold worthwhile, doesn't it? Of course, it depends on just how cold it is.


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Re: Supernova in M82 new [Re: nytecam]
      #6408703 - 03/04/14 02:38 AM

Really interesting to see the fading orange and increasingly whiter color of the fading SN confirmed with your beautiful pictures! In the earlier weeks I saw the SN as distinctly yellowish/ochre, over the last weeks I can only see a whitish color at the eyepiece of my scopes.

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schang
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Re: Supernova in M82 new [Re: Erik Bakker]
      #6418862 - 03/21/14 09:39 AM

This SN is dimmer still last night, after it exploded two months ago. I could only see it at 200X with direct vision with my 10" Dob. At 150X, it is not quite obvious. It is amazing that this one lasts as long as it did, and still has the fire power to show us, across the vast distance of over 10 mly, what it could do. I hope that there will be some scientific research done on this one to provide us a little more info on this type of SN in the near future.

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Re: Supernova in M82 new [Re: schang]
      #6424080 - 03/23/14 02:47 AM

I had a look at SN 2014J again earlier tonight using the ASH 17" f/15 classical Cassegrain at 259x. Averted vision helped in seeing it. SN 2014J was listed at magnitude 12.3 as of March 17th at http://www.rochesterastronomy.org/supernova.html#2014J

Dave Mitsky


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Re: Supernova in M82 new [Re: Dave Mitsky]
      #6424476 - 03/23/14 11:56 AM

Yeah, Sky Tools 3 also lists it at 12.3. But from what I've seen of people's observations, it seems visually fainter. I would imagine intervening dust in M82, as well as contrast with the brightness of the galaxy itself would account for that.

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Re: Supernova in M82 new [Re: kt4hx]
      #6424896 - 03/23/14 03:38 PM

Quote:

Yeah, Sky Tools 3 also lists it at 12.3. But from what I've seen of people's observations, it seems visually fainter. I would imagine intervening dust in M82, as well as contrast with the brightness of the galaxy itself would account for that.




I could not see even a hint of the SN in M82 lat night in my FS102 at around 60x under less than ideal conditions. Hence I suspect it will be dimmer than Mv 12 but will try again under better conditions to see if it is still within reach of the 4" apo.


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Re: Supernova in M82 new [Re: Erik Bakker]
      #6425576 - 03/23/14 10:56 PM

Looked at it again last night at Spring Mountain Ranch, on the west side of Las Vegas. Looking over the light dome of the city, the supernova was still visible, though it's getting pretty dim now. At first I had to use averted vision to spot the twinkle but once I caught its position, I could zero in on the spot and see it directly, sometimes steadily and sometimes blinking in and out. That was probably not only because of the severe light pollution but also because there was something going on in the sky. A few moments later, I noticed nebulae around some of the brighter stars.

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toddstep
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Re: Supernova in M82 new [Re: Feidb]
      #6425822 - 03/24/14 02:06 AM

It's still there, steady with averted vision at 180x, could not really see it directly. Can't judge the magnitude but seems dimmer then when I observed it on 3/19.

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Re: Supernova in M82 new [Re: toddstep]
      #6425894 - 03/24/14 03:46 AM

I saw it with my C14 this past Wednesday (3/19) from our astro clubs observing site in a yellow zone and it was noticeably fainter than two weeks ago. But I could still see it fairly easily with direct vision.

Bill


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Re: Supernova in M82 new [Re: Bill Barlow]
      #6425896 - 03/24/14 03:49 AM

I observed the supernova again on Sunday night, using the ASH 17" classical Cassegrain at 216 and 259x. SN 2014J was best seen with averted vision.

Dave Mitsky


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Re: Supernova in M82 new [Re: Dave Mitsky]
      #6426600 - 03/24/14 01:40 PM

I had no trouble seeing it with a Mallincam and CPC800 on Saturday night (3/22) at our club's star party (it was a big hit with the crowd). It wasn't visible with an eyepiece with that scope, but our light-pollution situation is pretty dismal for visual sighting of faint objects (we're 40 miles north of Times Square; the measured SQM was 19.85). [That's why I have to cheat a little and use the Mallincam!]

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aatt
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Re: Supernova in M82 new [Re: Larry F]
      #6426825 - 03/24/14 03:54 PM

I was observing with a 15" and although it is still very apparent, it has faded considerably since a week ago.

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Re: Supernova in M82 new [Re: aatt]
      #6430590 - 03/26/14 03:50 PM

Quote:

I was observing with a 15" and although it is still very apparent, it has faded considerably since a week ago.




Last night with my 18" from an orange zone it was barely detectable, and that was only because I knew where it should be. Definitely doesn't stand out like it did weeks ago.

Darker skies would help I'm sure.


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Re: Supernova in M82 new [Re: Kevdog]
      #6431439 - 03/26/14 11:33 PM

SN 2014J is now listed at magnitude 13.2 (as of 3/25).

Dave Mitsky


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Re: Supernova in M82 new [Re: Dave Mitsky]
      #6435295 - 03/28/14 10:42 PM Attachment (11 downloads)

My first visual view of SN 2014J was on March 22, 2014 UT. This was after the CCD camera was removed from the RC20 telescope. Cloudy skies prevent viewin early on.

This image take with a 77m f/6.6 Borg and SBI STi.


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canukLX90
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Re: Supernova in M82 new [Re: SabiaJD]
      #6438116 - 03/30/14 05:18 PM Attachment (10 downloads)

Still keeping tabs on this one as the weather permits.
The attached image taken on 20 March.
20 X 30 seconds @ F2.8 using PowerNewt and QSI632ws.
No calibration/processing other than stacking of the L subs.
Supposed to be clear next couple of days here in PNW and
and will try to get an updated image.

PJ


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Re: Supernova in M82 new [Re: canukLX90]
      #6438221 - 03/30/14 06:25 PM

I observed it on Friday, March 28th, 2014 and it was still easily visible in my 14". Averted vision would grab it just a tad more but direct vision still worked. It has faded a lot since I last looked and the 13th mag is about right.

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Re: Supernova in M82 new [Re: JayinUT]
      #6439113 - 03/31/14 09:53 AM

My wife and I saw it last night in my 18" with a 10mm Ethos though we were fighting pesky high clouds, and were observing in a brown zone (about mag 5.6-5.9). I could see it with direct vision much of the time and all of the time with averted vision, though it was faint. Just glad we finally got a chance to see it while it was still visible. Might be quite a while before another one like this comes along…

Edited by turtle86 (04/02/14 08:54 PM)


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Re: Supernova in M82 new [Re: turtle86]
      #6439236 - 03/31/14 10:57 AM

I saw it last night, too, in my 14.5" dob. It's faded a lot in one month, where is was really distinct is now just on the edge of directly seeing it. It does pop a bit more with averted vision.

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Re: Supernova in M82 new [Re: JimMo]
      #6439279 - 03/31/14 11:22 AM

Saw it very intermittently with direct vision 3/30 with a 12.5."

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Re: Supernova in M82 new [Re: KidOrion]
      #6440847 - 04/01/14 04:24 AM

I observed SN 2014J tonight using the ASH 17" f/15 classical Cassegrain at 185, 216, 249, and 462x. The best view was at 249x. I was able to see the supernova intermittently with direct vision and fairly steadily with averted vision at that magnification.

Dave Mitsky


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Re: Supernova in M82 new [Re: Dave Mitsky]
      #6442567 - 04/01/14 10:30 PM

Thanks for posting David, I wondered where it was visually at this point.

Pete


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galaxyman
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Re: Supernova in M82 new [Re: azure1961p]
      #6443132 - 04/02/14 09:23 AM

Saw it fairly easy last Wednesday (3/26) with my 8" refractor. Was actually comparing views of it using eyepieces Celestron 9mm X-Cel LX, AT 8mm 70WF, and an TV 8mm Delos (200x to 225x).

Best or was easiest in the Delos of course.

Observed it Monday night (3/31) with my 12.5" dob, and it's certainly dimming fast. Also had the 5" reflector and could not see it with that scope.



Karl
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Re: Supernova in M82 new [Re: galaxyman]
      #6443535 - 04/02/14 01:16 PM

I had another look at SN 2014J last night using the 17" f/15 classical Cassegrain at 185, 216, and 259x. I could see it intermittently with direct vision at 259x.

Dave Mitsky


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Re: Supernova in M82 new [Re: Dave Mitsky]
      #6444310 - 04/02/14 09:17 PM

There are a dozen or more pages in the two longest posts on SN2014J here and in the forum higher up . . . probably a CN record for a supernova. Wasn't this a great one? We should be so lucky to have one or two like it each year!

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Re: Supernova in M82 new [Re: Dave Mitsky]
      #6446488 - 04/04/14 02:27 AM

Here's my observation of the supernova from April 2 in my XT8:

SN 2014J in M82 (Cigar Galaxy), in Ursa Major: difficult averted vision object; like a tiny ember within the mottled galaxy’s plane; power helps; significantly much dimmer than from February 21; viewed at 48x, 96x, and 192x

-Nick Anderson


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canukLX90
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Re: Supernova in M82 new [Re: MikeBOKC]
      #6460510 - 04/11/14 02:40 PM Attachment (13 downloads)

This SN was and is a treat to follow. Slowly fading down
but still prominent in images. Attached taken evening of
09 April. Stack of 20 X 30 seconds using PowerNewt and
QSI632ws. I wonder what it will look like this time next
year?

PJ


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Re: Supernova in M82 new [Re: canukLX90]
      #6461671 - 04/12/14 08:17 AM

I finally got a chance to see this the other night. Can't believe it is still that bright. What a blast that must have been!

I was using my mak 150 with a .5x reducer and my gen 3 IIE with a red Longpass filter. Came out very good as I could see dust lanes, the very bright core, and on the limb, the still bright Supernova. First SN I've seen and done in backyard under heavy LP, but IIE comes out with very good image. Supernova's are Supercool! Well, as long as it's that far away....


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Scanning4Comets
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Re: Supernova in M82 new [Re: Vondragonnoggin]
      #6465095 - 04/14/14 05:17 AM

What magnitude is it now? (April 14, 2014)

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star drop
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Re: Supernova in M82 new [Re: canukLX90]
      #6478377 - 04/21/14 01:27 AM

Quote:

This SN was and is a treat to follow. Slowly fading down
but still prominent in images. Attached taken evening of
09 April. Stack of 20 X 30 seconds using PowerNewt and
QSI632ws. I wonder what it will look like this time next
year?

PJ



My first opportunity to view the supernova came early this morning. Through a 25" telescope it was visible with direct vision at 88x [41mm Panoptic eyepiece] magnification and a little easier at 181x [20mm ES 100° eyepiece]. There was no moon in the sky, average transparency (M81 looked washed out with no trace of its outer spiral arms) and mediocre seeing. My visual magnitude estimate is close to 14.5 (magnitude from SkySafari 4 Pro) using the star GSC 4383-0438 as a comparison star (the only star visible to the upper left of M82 in canukLX90's image above). The dim star immediately below and to the right of the supernova in the image is much dimmer visually than the image indicates, perhaps a full magnitude dimmer.


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Re: Supernova in M82 new [Re: star drop]
      #6478466 - 04/21/14 05:20 AM Attachment (20 downloads)

Here's my pic from this week below working @ scope's native f/10 mode - some nice detail in gx core

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schang
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Re: Supernova in M82 new [Re: star drop]
      #6492807 - 04/27/14 10:05 PM

I bid farewell to SN2014J last night with my 10" dob. It was only visible via averted vision, coming in and out in the midst of M82 starry background, at 266X. It has been fun observing this supernova in a far far away galaxy from its birth to fading away in the last three months.

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Bill Barlow
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Re: Supernova in M82 new [Re: schang]
      #6493225 - 04/28/14 04:56 AM

Well all good things must come to an end, so they say. I also enjoyed observing this object, being well placed in the night sky. The last time I saw it was in late March with my Meade 10" ACF. It was still visible with direct vision then, but much dimmer than a month before.

Bill


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turtle86
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Re: Supernova in M82 new [Re: Bill Barlow]
      #6496780 - 04/29/14 08:51 PM

I saw it last night at Chiefland using my 18" Dob. Definitely fainter than when I saw it a month ago, but I was pleasantly surprised that I could still see it with direct vision most of the time. I had my best views with an 8mm Ethos, with a mag of 283x.

It has been a thrill observing it, and its appearance makes up for Comet Ison being a bust.


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Re: Supernova in M82 new [Re: turtle86]
      #6497957 - 04/30/14 12:05 PM

Saw it again this past Saturday night with the 8" f/9 refractor using a 6mm Delos (300x).

Not quite of course like I saw it last month with the same scope and the 22” dob or when I sketched it at maximum for Galaxy Log video 02.2014 using the 6” refractor, but still neat to see it once more.


Karl
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lionel
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Re: Supernova in M82 new [Re: galaxyman]
      #6498556 - 04/30/14 05:07 PM

I was observing with Karl last Saturday and was surprised to find the supernova still easily seen with direct vision in my 16" dob at 123x (16T5). Seeing was a bit better than average that evening.

Lionel


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canukLX90
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Re: Supernova in M82 new [Re: lionel]
      #6499477 - 05/01/14 01:38 AM Attachment (15 downloads)

SN still looks prominent in M82 compared to other features.
A 30 second image taken last night with 200 mm @ F2.8 and
QSI632ws.

PJ


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nytecam
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Re: Supernova in M82 new [Re: canukLX90]
      #6574610 - 06/10/14 12:18 PM Attachment (11 downloads)

Supernova still there after nearly 6 months - my shot from June 5 eg 5 days ago [full data on image]. Even a 5s exposure showed it!

Could be clear tonight although it doesn't get really dark @ 52N near Summer Solstice - especially with a bright gibbous moon about


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Re: Supernova in M82 new [Re: nytecam]
      #6574723 - 06/10/14 01:25 PM

Yup, I could still see it faintly in my 14 inch a couple of weeks ago. It sure is hanging in there. Clear skies to you.

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Dave MitskyModerator
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Re: Supernova in M82 new [Re: David Knisely]
      #6575775 - 06/10/14 10:52 PM

Tony Donnangelo and I were able to see SN 2014J at high power through his 24" f/3.3 Starmaster Dob from Cherry Springs on the night of May 31st.

An image of the supernova that was captured on May 30th can be http://www.krannich-online.de/astronomie/m82_201405302310c.jpg

The conditions were superb that night and M82 was striking at over 600x.

Dave Mitsky


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