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Observing >> Variable Star Observing and Radio Astronomy

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nytecam
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Reged: 08/20/05

Loc: London UK
SN in M65 Leo
      #5751200 - 03/23/13 04:48 AM

http://www.rochesterastronomy.org/supernova.html#PSNJ11185695+1303494 discovered Mar 21 "may reach mag 11?"

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Rich (RLTYS)Moderator
Post Laureate
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Reged: 12/18/04

Loc: New York (Long Island)
Re: SN in M65 Leo new [Re: nytecam]
      #5751294 - 03/23/13 07:53 AM

Nytecam, thanks for the info but maybe I'm wrong but according to the info posted I think this SN is fadeing.

Rich (RLTYS)


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JayinUT
I'm not Sleepy
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Reged: 09/19/08

Loc: Utah
Re: SN in M65 Leo new [Re: Rich (RLTYS)]
      #5751550 - 03/23/13 10:57 AM

It's been found early on in its existence so this one will be brightening. A variety of measurements but the last one on 3/123 shows it brightening. Excellent find.

LINK PortaltotheUniverse

Finder Image

Edited by JayinUT (03/23/13 11:03 AM)


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JimP
Pooh-Bah


Reged: 04/22/03

Loc: South Carolina
Re: SN in M65 Leo new [Re: JayinUT]
      #5752377 - 03/23/13 05:55 PM

I wonder if the discoverer Knew M65 so well or if he was using a chart that allowed him to recognize the "new" star in the image?

JimP


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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: SN in M65 Leo new [Re: JimP]
      #5753307 - 03/24/13 06:13 AM

Quote:

I wonder if the discoverer Knew M65 so well or if he was using a chart that allowed him to recognize the "new" star in the image? JimP


If, and I presume like me, he's a SN Hunter then it's a whole new ballgame that's extemely competitive and thus secretive! Some do nothing else eg recording in brief exposures maybe 100s of galaxies per clear night in a systemation fashion and compare with their previous library shots for changes. Could have been a chance discovery but I suspect not

My own SN hunting is perhaps more casual - I discovered mine [SN2011az] very 'early on' in search terms and have statistical a long way to go for the next.

Interestingly Tyler Allred of the CCD Forum recorded the M65 SN [on the same night as the discoverer] on the first target for his DIY astrograph but was unaware of it until I pointed it out to him. This is not unusual as most imagers don't examine their posted results [I do!] and are more concerned with matters of technique and Photoshop image processing.


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Hubert
sage


Reged: 09/26/06

Loc: Belgium
Re: SN in M65 Leo new [Re: nytecam]
      #5753597 - 03/24/13 10:32 AM

Correct! Most astrophotographers care only for the beautiful images and not about the scientific results.

Hubert


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JimP
Pooh-Bah


Reged: 04/22/03

Loc: South Carolina
Re: SN in M65 Leo new [Re: nytecam]
      #5753731 - 03/24/13 11:27 AM

Hundreds of images certainly sounds tedious to me. But, to each his own. For a more laid back individual like yourself you image galaxies then compare the images to previous images made by yourself with the same equipment for any "new" stars? Is that correct?

Jim


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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: SN in M65 Leo new [Re: JimP]
      #5755565 - 03/25/13 06:47 AM

Quote:

Hundreds of images certainly sounds tedious to me. But, to each his own. For a more laid back individual like yourself you image galaxies then compare the images to previous images made by yourself with the same equipment for any "new" stars? Is that correct? Jim


Something like that! I usually target the Messier "lollypops" to have something to show for my imaging session but then offset, via Megastar s/ware, to a nearby group of gxys in the fov in one hit to increase gxy coverage! I also have Sloan DSS running in the backround on my laptop and bring up the same area as my downloaded shots in a split screen for a quick comparison and more detailed check later on suspect stars. Here's 'finished' pics of two adjacent fields grossing 40 gxys that had no apparent SN.

Like most SN hunters and those interested in a possible scientific return from imaging - I'm fussy about image orientation [North up/ East left] and precise image fov for comparison to pro atlases and dated header etc on image - something most CCD imagers avoid like the plague



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Achernar
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Reged: 02/25/06

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Re: SN in M65 Leo new [Re: JayinUT]
      #5755749 - 03/25/13 09:49 AM

The blast itself must not generate nearly as much light as the intense radioactivity due to the irradiation of the debris by the neutron surge. A newborn neutron star blasts the expanding wreckeage with neutrons and that is what creates all the elements between iron and plutonium, much the same way nuclear fallout is created by the explosion of nuclear bombs at or near the ground. The expanding debris also has to expand and thin for the light to escape and reach us. Given M-65's proximity to us, I am sure this supernova will be visible to larger amatuer telescopes and CCD immagers for months. I'm going to be looking for it ASAP, it appears this one wa detected within hours of the actual explosion much like the type 1A supernova that occured in M-101 back in 2011.

Taras


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Rich (RLTYS)Moderator
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Reged: 12/18/04

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Re: SN in M65 Leo new [Re: nytecam]
      #5762900 - 03/28/13 06:30 PM Attachment (29 downloads)

Just took this image of M65 with SN 2013AM. Estimated mag 16.6.

Rich (RLTYS)


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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: SN in M65 Leo new [Re: Rich (RLTYS)]
      #5765472 - 03/29/13 06:17 PM Attachment (22 downloads)

My 1st clear evening and shot of SN since discovery - it doesn't seem to have brightened since then


Edited by nytecam (03/31/13 04:32 PM)


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canukLX90
professor emeritus


Reged: 12/25/08

Loc: B.C. Canada
Re: SN in M65 Leo new [Re: nytecam]
      #5769378 - 03/31/13 05:58 PM Attachment (25 downloads)

My first clear night in about a month so had to image this
new SN for myself. It does not seem to be doing much about
getting any brighter. Attached a single image of 3 minutes
taken with the PowerNewt F2.8 and DSLR at ISO 800.

PJ


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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: SN in M65 Leo new [Re: canukLX90]
      #5771408 - 04/01/13 06:23 PM

Nice shot - mine from tonight below - the SN has stayed essentially constant mag



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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: SN in M65 Leo new [Re: nytecam]
      #5775046 - 04/03/13 09:37 AM Attachment (17 downloads)

Grabbed another quicky shot last night Apr 2 as cloudy skies returned again for rest of week

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canukLX90
professor emeritus


Reged: 12/25/08

Loc: B.C. Canada
Re: SN in M65 Leo new [Re: nytecam]
      #5775649 - 04/03/13 01:54 PM

Clouds are back here for awhile and the moon is not
in the sky so thanks for posting your images. The SN
certainly doesn't seem to be changing much over time.

PJ


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Rich (RLTYS)Moderator
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Reged: 12/18/04

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Re: SN in M65 Leo new [Re: canukLX90]
      #5797893 - 04/14/13 06:55 AM Attachment (17 downloads)

Took this image on the morning of the 13th. I'd estimate SN 2013AM to be about 17.0 mag.

Rich (RLTYS)


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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: SN in M65 Leo new [Re: Rich (RLTYS)]
      #5798266 - 04/14/13 01:01 PM Attachment (13 downloads)

Nice pic - I made it m17.1 from my pic for Apr 11 below with comparison to Apr 5

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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: SN in M65 Leo new [Re: nytecam]
      #5801161 - 04/15/13 06:09 PM Attachment (17 downloads)

Tonight's image Apr 15

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Rich (RLTYS)Moderator
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Re: SN in M65 Leo new [Re: nytecam]
      #5802026 - 04/16/13 06:04 AM

It's definitely starting to fade.

Rich (RLTYS)


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canukLX90
professor emeritus


Reged: 12/25/08

Loc: B.C. Canada
Re: SN in M65 Leo new [Re: Rich (RLTYS)]
      #5806037 - 04/18/13 02:59 AM Attachment (15 downloads)

Late posting this image but here it is for comparison.
23 X 3 minutes at ISO 800 with the DSLR and PowerNewt taken
on 30 March.

I tried to image the SN in NGC2554 but moon and hazy sky
making it impossible at this time. Weather is really not
the best being mostly cloudy.

Cheers

PJ


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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: SN in M65 Leo new [Re: canukLX90]
      #5810588 - 04/20/13 10:51 AM Attachment (11 downloads)

Quicky shot Apr 18

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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: SN in M65 Leo new [Re: nytecam]
      #5828358 - 04/28/13 01:23 PM Attachment (9 downloads)

pic for last Friday night Apr 26

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Rich (RLTYS)Moderator
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Reged: 12/18/04

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Re: SN in M65 Leo new [Re: nytecam]
      #5831622 - 04/30/13 06:10 AM

SN 2013AM appears to be slowly fadeing.

Rich (RLTYS)


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canukLX90
professor emeritus


Reged: 12/25/08

Loc: B.C. Canada
Re: SN in M65 Leo new [Re: Rich (RLTYS)]
      #5861414 - 05/15/13 02:49 AM Attachment (12 downloads)

I did a follow up image of the SN on 06 May and it was still
visible at that time. DSLR 6 X 3 minutes @ ISO 800 using
PowerNewt F2.8. No calibration/processing other than crop
from full frame.

PJ


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