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Old 21-03-2012, 01:31 AM
brian nordstrom (As avatar)
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SN in M95

lost my heads up here ? anyway a new Super nova , spotted in M95 , last time I posted this , it was mag. 12.9 . last seen under mag .12. Around 5 hours ago I put a SV Alert .. on this . ...
Brian
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Old 21-03-2012, 08:29 AM
PeterM
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The link below gives details for SN 2012aw discovered on March 16th by the Italian Supernova Search. Apparently rising rapidly in brightness.

http://www.rochesterastronomy.org/snimages/
PeterM.
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Old 21-03-2012, 10:22 AM
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HI All,
for anyone who would like to see a bright supernova visually, try the latest bright one that was found on March 16th in M95 (NGC3351) which is in Leo, and is currently about 1 degree south-east of Mars.

This is brightening very quickly, and so is likely to be brighter over the next few days before it levels off. Its a type IIP, which means it's a single huge explosion, and the 'P' means it will have a plateau phase that will maintain it's unusual brightness for months to come.

I measured the brightness of new SN to be about magnitude 13.3, so it should be visible in telescopes with mirrors of 8" or more under dark skies.

Good luck,
Attached Thumbnails
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Old 21-03-2012, 11:16 AM
PeterM
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Here's the CBET on this discovery.
http://www.cbat.eps.harvard.edu/iau/...CBET003054.txt
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Old 21-03-2012, 12:07 PM
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Thanks Brian,Peter and Greg
Cheers
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Old 21-03-2012, 01:35 PM
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Nearly had a look at M95 on Monday night.
Didn't in the end as I was busy chasing other fuzzies. Oh well might get it at SV on the weekend.

Malcolm
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Old 21-03-2012, 04:01 PM
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yet another SN

Will definitely be worth a look, thanks!

Also worth noting is another bright supernova in NGC4790 in Virgo (about 4 deg from Sombrero Galaxy). SN2012au is at mag 13.3 (possibly still on the way up?), but very close to the host galaxy's nucleus. Perhaps big telescopes can separate the two?

Same link as above: http://www.rochesterastronomy.org/snimages/

I've yet to try and see either (and probably unlikely from the Melbourne suburbs with an 8"), but if either brightens a bit they'll be decent targets!
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Old 21-03-2012, 09:37 PM
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Quote:
Originally Posted by barx1963 View Post
Nearly had a look at M95 on Monday night.
Didn't in the end as I was busy chasing other fuzzies. Oh well might get it at SV on the weekend.

Malcolm
thanks guys this could be a good challenge for us at Snake Valley Camp on the weekend
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Old 21-03-2012, 10:04 PM
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Jen
your 12" should show it easily, good luck
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Old 21-03-2012, 10:51 PM
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Jen
your 12" should show it easily, good luck
really how cool thanks
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Old 21-03-2012, 11:15 PM
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Got it!

It is sitting a fair way from the core of the galaxy, only vis with AV under my light polluted skies in the 12" but at 150x it is a nice little point that is quite obvious.
Low power won't work with this, at 88x it was on the edge of visibility.

I think thre is a bit of high moisture/clouds here that is dimming the view as the galaxy is really dim.

Malcolm
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Old 21-03-2012, 11:40 PM
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As I suspected transparency is a bit dodgy down here tonight (now there's a surprise!!) cruised over to the Triplet and NGC 3628 was invisible with no structure apparent in M65 and M66. Also looked for M104 and nowhere near as bright as on Monday night.

If we get a clear night at SV the SN will be nice and bright.

Malcolm
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Old 22-03-2012, 09:26 AM
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It seems that here in SE Qld, or anywhere in Qld, we don't have stars anymore, just clouds and rain, or just clouds...

My image of the SN in M95 above is only 3 x 30 second images combined that were captured in a 2 minute gap between clouds drifting through, and I had to close the roof after the last 30 second subframe was finished due to rain on the roof again...
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Old 22-03-2012, 10:55 PM
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Managed a rare evening shoot tonight and very pleased to get it! Hopefully I'll get to eyeball it at Snake Valley this weekend, if some charitable person will grant me a view!

http://i727.photobucket.com/albums/w...ar2012text.jpg

Cheers -
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Old 23-03-2012, 12:00 AM
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Rob, you are a legend!
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Old 23-03-2012, 01:45 AM
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I haven't even been able to make out M95 as of yet but my main observing position has lights shining in my face so I can't really get dark adapted.
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Old 23-03-2012, 10:00 PM
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nicely seen at 102x quiet some distance from core of m95 seeing a little hazy will crank up mag.. to see if more of m95 is visable... thanks for info
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Old 23-03-2012, 10:20 PM
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209x was some more structure of m95 but nothing seen out to s/n...cranked up to 530x with bluryness of m95 core but had that and s/n on edge of eyepiece in focus nice sight to see........
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Old 23-03-2012, 10:49 PM
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The progenitor star has probably been identified on deep old hubble images. See here http://www.astronomerstelegram.org/?read=3991
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Old 23-03-2012, 11:38 PM
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We have a dedicated forum for Observing Reports, It would be appreciated if observers of the Supernova would post their observations there.
We have two threads going on this
Cheers

PS Brian you put your Supernova Alert on the observational and visual Astronomy.
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