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