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Observing >> Deep Sky Observing

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Dave MitskyModerator
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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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Bill Weir
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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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Dave MitskyModerator
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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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kt4hx
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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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Kevdog
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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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Dave MitskyModerator
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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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Dave MitskyModerator
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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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Bill Weir
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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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Rich (RLTYS)
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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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nytecam
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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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Erik Bakker
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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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