Object: Galaxy  M101 in Ursa Major
Date: April 19, 2003
Equipment: WO FLT110 at F/6.5, HX916 CCD, G11 mount, ST-4
Exposure: LRGB 120:30:30:30 minutes. Composite exposure, RGB frames were acquired on a different night.
Processing: Photoshop (no flats or darks applied to the Luminance)
Comments: Clouds rolled in after the L frame was acquired, ruining the RGB frames. To save the exposure, an older set of RGB frames taken at lower resolution were combined with the new luminance.

Copyright 2002,03 Paul Kanevsky