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ASTRO: Supernova 2007ca in Spiral Galaxy MCG -2-34-61



 
 
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  #1  
Old May 23rd 07, 04:28 AM posted to alt.binaries.pictures.astro
George Normandin[_1_]
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Default ASTRO: Supernova 2007ca in Spiral Galaxy MCG -2-34-61

SN 2007ca is a Type Ia that I measured at magnitude 15.94 at 2:15 UT on May
14, 2007. That's brighter than the host galaxy!

MCG-2-34-61 (constellation of Virgo) is a precular warped disk galaxy, or
possibably two galaxies merging. I took the image under such poor seeing
condtions that the small extension (warped arm of a second galaxy) is just
bearly visable.

A 15 minute exposure with an SBIG STL-1301E camera thru an OGS 20-inch F/8.1
RC Cass.

For more info, see: http://www.kopernik.org/images/archive/mcg-02-34-61.htm
and http://astro.berkeley.edu/~bait/2007/sn2007ca.html

George N




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  #2  
Old May 24th 07, 11:05 PM posted to alt.binaries.pictures.astro
Stefan Lilge
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Default ASTRO: Supernova 2007ca in Spiral Galaxy MCG -2-34-61

Still a very interesting object in spite of the bad seeing. This is at last
a supernova which lives up to the "as bright as the whole rest of the
galaxy" claim, that I have often read about supernovae.
Fortunately I can't complain about the seeing this spring. I had some very
bright moonlit nights, but seeing was better than the previous years.

Stefan

"George Normandin" schrieb im Newsbeitrag
...
SN 2007ca is a Type Ia that I measured at magnitude 15.94 at 2:15 UT on
May 14, 2007. That's brighter than the host galaxy!

MCG-2-34-61 (constellation of Virgo) is a precular warped disk galaxy, or
possibably two galaxies merging. I took the image under such poor seeing
condtions that the small extension (warped arm of a second galaxy) is just
bearly visable.

A 15 minute exposure with an SBIG STL-1301E camera thru an OGS 20-inch
F/8.1 RC Cass.

For more info, see:
http://www.kopernik.org/images/archive/mcg-02-34-61.htm
and http://astro.berkeley.edu/~bait/2007/sn2007ca.html

George N



  #3  
Old May 25th 07, 02:31 AM posted to alt.binaries.pictures.astro
George Normandin[_1_]
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Posts: 1,022
Default ASTRO: Supernova 2007ca in Spiral Galaxy MCG -2-34-61


"Stefan Lilge" wrote
...
Still a very interesting object in spite of the bad seeing. This is at
last a supernova which lives up to the "as bright as the whole rest of the
galaxy" claim, that I have often read about supernovae.
Fortunately I can't complain about the seeing this spring. I had some very
bright moonlit nights, but seeing was better than the previous years.


Stefan,

The seeing was **really** bad the night I took this. I had another SN
image but I just deleted it. Hopefully we'll get some good seeing before
Saturn goes. I need to get some images of him with the refractor.

George N


 




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