by Bob Franke
This image shows the Cygnus Wall, in the southern part of the North American Nebula... NGC 7000. When Rotated 130 degrees CCW, the wall becomes The Mountains of Cygnus. Although taken primarily with narrowband filters, the image is a pretty good representation of RGB colors. However, the use of these filters greatly enhances the detail.
Taken from 08/26/2009 to 10/16/2009 in Chino Valley, AZ
RCOS 12.5" Ritchey-Chrétien w/ an SBIG STL-11000 camera using Astrodon 6nm filters
Exposure Details:
Ha:OIII:OIII + 20%[LRGB]
Ha 480 min. (16 x 30 min. bin 1x1)
OIII 480 min. (16 x 30 min. bin 1x1)
Lum 180 min. ( 6 x 30 min. bin 1x1)
RGB 180 min. ( 4 x 15 min. bin 2x2, each)