NGC 4631 (The Whale Galaxy) by Bob Franke

Submitted by AstroPhoto Insight on Tue, 05/13/2008 - 11:44.

12.5" RCOS @ ~f/9 (2880 mm fl)
Paramount ME
SBIG STL-11000 w/ internal filer wheel, AstroDon Filters
Exposures: LHa(RHa)GB
Ha 540 min. (18 X 30 bin 1x1)
Lum 240 min. (24 x 10 bin 1x1)
RGB 270 min. (9 x 10 bin 2x2) each

http://bf-astro.com/ngc4631.htm