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SN 2012A, a supernova in Leo

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#1 Rich (RLTYS)

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Posted 14 January 2012 - 08:15 AM

For those interested, there's a new supernova in Leo. At this point it's rather faint, below 13th mag, possibly mag 13.4. This is SN 2012A located within the Galaxey NGC 3239. Its coordinates are: RA 10h 25m 07s.38, Dec +17deg 09m 14.6s. You can check the Deep Sky Observing Forum for more info. You can download observing charts from the AAVSO.

Rich (RLTYS)

#2 amirber

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Posted 16 January 2012 - 04:16 AM

Hi RLTYS, is there an estimate as to what will be the brightest magnitude/when will it be reached?

#3 nytecam

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Posted 16 January 2012 - 05:17 AM

Here's my image from early this morning via tiny piggybacked Meade ETX-70 unfiltered - my estimate mag 13.7 - data on image ;) This is my 3rd pic over last few days and SN seems slightly brighter this morning :rainbow:

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#4 Rich (RLTYS)

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Posted 16 January 2012 - 05:58 AM

Hi RLTYS, is there an estimate as to what will be the brightest magnitude/when will it be reached?


I don't think there is any way to know how bright SN 2012A will become. We'll just have to wait and see. :)

Rich (RLTYS)

#5 Rich (RLTYS)

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Posted 16 January 2012 - 06:04 AM

Nytecam, I took my first images of SN 2012A last night (1/15) using the Slooh remote observatories on the Canary Islands. I've not had a good look at the images yet and haven't made a mag estimate. I will be posting images.

Rich (RLTYS)

#6 Rich (RLTYS)

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Posted 16 January 2012 - 10:58 AM

Here is my first image of SN 2012A. Nytecam, based on my image I'd say your estimate of 13.7 for SN 2012A seems acurate.

Rich (RLTYS)

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#7 Rich (RLTYS)

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Posted 16 January 2012 - 11:02 AM

Here's a close up image of SN 2012A.

Rich (RLTYS)

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#8 lunar

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Posted 17 January 2012 - 06:52 PM

It seems to have a slightly blue appearence in color. If I'm correct, possibly an indicator that it's definitely in the start of its light-curve, and will later begin to cross over to being a bit more red (?) after peak brightness.

Great images everyone, I hope to see this new supernovae as soon as I possibly can, given that the weather permits it. I've had complete overcast the past few weeks. It only adds to the eagerness to get out and do some much-needed and valuable observing time.

Clear skies,and I hope to see more images following the progression of this event in the future,
Brandon Doyle

#9 Rich (RLTYS)

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Posted 22 January 2012 - 08:51 AM

Here is an image of SN 2012A taken on the 19th. It appears to have faded slightly. This was confirmed by the AAVSO LCG. Unfortunetly SN 2012A never got brighter then mag 13.4.

Rich (RLTYS)

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#10 lunar

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Posted 22 January 2012 - 02:59 PM

Too bad...that definitely means that I'd better get out asap if I want to see it before it fades as well.

Beautiful image!

Clear skies,
Brandon Doyle

#11 nytecam

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Posted 23 January 2012 - 06:34 PM

tonight's 60s backyard shot via 12"LX200 ;)

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#12 Rich (RLTYS)

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Posted 24 January 2012 - 06:08 AM

Nytecam, nice shot. Did you use any filters?

Rich (RLTY)

#13 robin_astro

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Posted 29 January 2012 - 09:24 AM

Christian Buil has some spectra here showing evolution over 10 days.
http://astrosurf.com...upernovae/2012/
This would also be a good target for Star Analyser /Rainbow Optics type spectrographs if you have reasonably dark skies

Cheers
Robin

#14 Rich (RLTYS)

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Posted 01 February 2012 - 06:03 AM

I took another shot at SN 2012A last evening and I still have to check, but it looks like it continues to hover around mag 13.7.

Rich (RLTYS)

#15 NJScope

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Posted 01 February 2012 - 03:51 PM

I was doing some photometry on a minor planet in Gemini early this morning and decided to slew over to SN2012a when I finished. Based upon the AAVSO reference chart for this region, the following magnitude estimates (n=10 in each bandpass) were calculated:
Bmag = 14.77 ± 0.09
Vmag = 14.01 ± 0.06
Ic mag = 13.48 ± 0.1

Equipment:
OTA - Classic Orange (1972) C8
Camera - ST402ME (1 min exposures)

The attached image is through the Ic photometric filter.

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#16 PCygniii

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Posted 02 February 2012 - 07:48 AM

Calling for clear(ing) skies tonight; hoping to get out and make an estimate. :jump:

#17 Rich (RLTYS)

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Posted 25 February 2012 - 10:22 AM

Here's a shot of SN 2012A taken early this morning. Based on this image SN 2012A appears to be 14th mag possibly fainter.

Rich (RLTYS)

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#18 Icarus

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Posted 26 February 2012 - 01:43 AM

Very nice Rich!

Clear Skies, Scott

#19 Rich (RLTYS)

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Posted 23 April 2012 - 05:22 AM

I imaged SN 2012A last evening (4-22) for the first time in a month and this SN has faded considerably. I estimated its mag at 15.9.

Rich (RLTYS)

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#20 IVM

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Posted 23 April 2012 - 11:22 AM

Greetings,
The last post in my blog (below) deals with my recent visual observation of this SN (and the one in M95). It is curious that we have two SNs now in the same galaxy group. Although it is a sizable group, I think there are only a dozen decently sized galaxies there at best, so statistically the simultaneity it is still remarkable.






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