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Supernova in whirlpool galaxy

Posted: Sat Jun 04, 2011 8:38 pm
by Dave Lillis
Hi All,
M51 has wielded a 13.5 magnitude supernova, and this is perfectly placed in the sky near the zenith at this time of the year.
This is just about pickup-able in a 12" scope, smaller scopes will find it challanging but not impossible.
If you get out over the next week or so, make sure you have a peak.
http://www.variablestarnights.net/
http://www.aavso.org/aavso-special-notice-241

Image

Posted: Mon Jun 06, 2011 11:17 pm
by Tom Walsh
That's a pity, the weather looks crap for the coming week. I wouldn't mind getting a look at it!

Posted: Tue Jun 07, 2011 1:22 pm
by Dave Lillis
well, I hauled the scope out on Sunday night and had a look, its quiet obvious on the edge of the Galaxy, very easy to find, mag 13.5 is well within the reach of a 20".
I have to say that going on the above photographs relative to the surrounding stars, I thought it would look a little brighter.
It was 00.15 before it got dark enough to see it, most supernovae last a week or 2, some last over a month.

Posted: Tue Jun 07, 2011 11:57 pm
by Frank Ryan
I'd have expected you to have seen it a bit brighter than the surrounding
stars also.
Maybe it's fading quicker than expected.

C'mon Betelguese!!


:twisted:

I wanna get a shot like this when it does!!
Image

Posted: Wed Jun 08, 2011 4:31 pm
by Dave Lillis
Dont know if its fading yet, but there are some tentitive reports on the web that its down to 14.2, I hope this isnt true cos that would indicate a rapid drop off, but thats not too likely for a type 2 supernova (>8 solar masses) like this, depends on if its type L, P or B. The jury is still out as to where the light curve is going.
Also, the stellar material is moving out at over 17k kms per second from the stars core, now thats fast !
There are also some indication from old hubble images that the pregenitor star has been identified, cool if true.

Posted: Wed Jun 08, 2011 6:59 pm
by Frank Ryan
Pitty the weather is awful.
It'd be a challenge to try see it.

Posted: Wed Jun 08, 2011 7:58 pm
by Dave Lillis
At mag13.5-14, it would be a major challange in a 10", it might not be possible at all, worth a try though.