M101: A spiral galaxy in the Big
Dipper
.
Image processing: CCDoops + CCDSoft +
Photoshop CS3.
Images taken:
April 11, 2007, by Bart Reising & James Davis.
Telescope: Meade 12 in with f/5.7 focal
reducer (f=68in).
Camera: SBIG ST-10 CCD
Exposures: 2
x 15 min red, 3 x 15 min green, 3 x 15 min blue (2 hours total).
Image processing: CCDoops + CCDSoft +
CCDSharp + Photoshop CS.