Here is a shot of the Helix Nebula taken from the mountains just east of San Diego. There was a fortunate conspiracy of good seeing, clear skies and good guiding for this image. In addition to RGB exposures, I took both H-Alpha and broadband luminance (with IR/UV blocking filter). I am glad I did both the H-Alpha and Luminance - their blended result produced a better image than either separately. A full size image and exposure / processing details are at:
http://jthommes.com/Astro/Helix.htm
Scope C8 @f/4.8
Artemis285 H-Alpha, IR/UV Blocking, RGB filter exposures
G11/Gemini
Guiding - Megrez II at 1350 mm FL, DSI Pro, PHD Guiding
I have imaged this object a couple of time previously. Those images can be seen here:
2005: http://jthommes.com/MiscAstro/Archives/Helix.htm
2003: http://jthommes.com/MiscAstro/Archives/HelixA.htm
(Caution, this one may hurt the eyes)
http://jthommes.com/Astro/Helix.htm
Scope C8 @f/4.8
Artemis285 H-Alpha, IR/UV Blocking, RGB filter exposures
G11/Gemini
Guiding - Megrez II at 1350 mm FL, DSI Pro, PHD Guiding
I have imaged this object a couple of time previously. Those images can be seen here:
2005: http://jthommes.com/MiscAstro/Archives/Helix.htm
2003: http://jthommes.com/MiscAstro/Archives/HelixA.htm
(Caution, this one may hurt the eyes)
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/