Jim Brown had recently posted his great image of the Cocoon. Here is a version I did also in September. Full size version is at:
http://jthommes.com/Astro/CocoonNeb.htm
Click the image for a full size JPEG.
Exposure was:
H-Alpha - 7 subframes, 7 minutes ea ( I was feeling lucky that night)
Full Spectrum Luminance - 5 subframes, 3 minutes ea
RGBs - 6 subframes 1.5 minutes ea (2x2 bin)
Optics were at f/6.
http://jthommes.com/Astro/CocoonNeb.htm
Click the image for a full size JPEG.
Exposure was:
H-Alpha - 7 subframes, 7 minutes ea ( I was feeling lucky that night)
Full Spectrum Luminance - 5 subframes, 3 minutes ea
RGBs - 6 subframes 1.5 minutes ea (2x2 bin)
Optics were at f/6.
Jim Thommes
Mak-Newt 152 mm
C8
Megrez II APO
Zenithstar 66 mm APO
G11/Gemini
ST8300M
Artemis285 Camera
Canon 350D DSLR
http://jthommes.com/Astro/