M 108 (NGC 3556) Galaxy in Ursa Major

Located at: RA 11 hours 11 minutes 30 seconds, Dec +55 degrees 40 minutes 19 seconds

Size: 8.7' x 2.2'; Magnitude: 10.7 blue; Class: SB(s)cd sp

North is up

West to the right

Telescope:

 8" f5 Newtonian reflector

Camera:

  ST-8XME, self-guided, binned 1x1, temp -20 & -25c, camera control MaxIm DL 4.56
Image:

Lumicon Red filter, 720 minutes (72 x 10 minute subs), 04/03/04/05/06/2009; seeing 2.2-4.5 FWHM per CCDStack
Processing:

CCDStack 1.5.2.1, Photoshop 7.0
Location:

 Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s)
Notes:

I made a strategic mistake in re-imaging M 108. I had started the night wanting to re-image M 97 (slight focus problem), but at the last minute centered on M 108. I had forgotten that I have a decent image taken last year with the Deep Sky filter. Even though this image is four hours longer ... it is essentially similar to the 470 minute Deep Sky filter image. This image was taken with a lot of moon in the sky for entire sequence (new Moon April 9)