(IAAC) Fwd: [Galaxys_And_Galaxy_Clusters] The "Double Star" Supernova, 2005/3/15 UT [NGC 2811, Hydra]

[Lew Gramer]

Forwarded without the author's permission, from the really neat (if slightly
misspelled)Galaxys_and_Galaxy_Clusters group on Yahoo! Group.

Has anyone else observed this SN, or recently logged this NGC galaxy?

Clear skies!
Lew Gramer


--- Galaxys_And_Galaxy_Clusters at yahoogroups.com wrote:
> Date: 16 Mar 2005 13:19:20 -0000
> From: Galaxys_And_Galaxy_Clusters at yahoogroups.com
> To: Galaxys_And_Galaxy_Clusters at yahoogroups.com
> Subject: [Galaxys_And_Galaxy_Clusters] Digest Number 144
> ________________________________________________________________________
> ________________________________________________________________________
> 
> Message: 1         
>    Date: Wed, 16 Mar 2005 11:01:24 -0000
>    From: "davejm28" <djm28 at psu.edu>
> Subject: The "Double Star" Supernova, 2005/3/15 UT
> 
> 
> I was able to observe, but just barely, the recent supernova SN
> 2005am on Monday night using the 17" f/15 classical Cassegrain at the
> ASH Naylor Observatory. SN 2005am is a bright (13.5 magnitude) type
> Ia supernova that is located 17".6 east and 31" north of the center
> of the 11th magnitude spiral galaxy NGC 2811 in western Hydra.
> A "bright" star is situated approximately 8" southwest of SN 2005am.
> The result is a faux double star consisting of a star and an exploded
> star.
> 
> The supernova has a right ascension of 09h16m12s.47 and a declination
> of -16°18'16".0. It was discovered on 2005/02/22.733 by R. Martin.
> 
> NGC 2811 is on the Astronomical League's Herschel 400 list and is not
> particularly difficult to find. It is located to the southwest of
> Alphard (Alpha Hydrae). The galaxy has a bright stellar core but is
> otherwise unremarkable.
> 
> These two images are the most helpful in identifying the supernova of
> the ones I've seen:
> 
> http://astrosurf.com/jmllapasset/pubb/im_2005/2005_1/05amLL_C200503102102.JPG
> 
> http://astrosurf.com/blazar/super/SN05/SN2005am-rod.JPG
> 
> I had no problems acquiring NGC 2811 at 162x (40mm University Optics
> MK-70). Unfortunately, it was sitting right on top of the light dome
> produced by our friendlly neighborhood all-night ski run. On top of
> that, the astronomical seeing was very poor, which made a definite
> sighting even harder. Using averted vision and just a bit of averted
> imagination at magnifications of 202 (32mm U.O. Koenig-II) and 259x
> (25mm U.O. MK-70), I was able to catch fleeting glimpses of SN 2005am
> and its "companion" star.
> 
> Dave Mitsky
> 
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Lew Gramer <dedalus at alum.mit.edu>


		
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