Hi All,
I did an image of the Owl a few nights back. The Owl is well known for its OIII emissions. Richard Crisp has done a nice Ha OIII image of the Owl. Unfortunately my green filter is very poor on the OIII emission line so a straight LRGB combine renders the object rather blue with my setup. (I really am going to get some good RGBs one of these days.) I corrected by doing a 24% Hard light application of the blue channel on the green. It was the best I could do.
A full size image is at:
http://www.jthommes.com/Astro/M97.htm
Scope - C8 at f7.7
Camera - Artemis285 LRGB filters
Mount - G11/Gemini (McClennan Gearbox modified)
Guiding - Megrez II at 1350 mm FL, DSI Pro, PHD Guiding
I did an image of the Owl a few nights back. The Owl is well known for its OIII emissions. Richard Crisp has done a nice Ha OIII image of the Owl. Unfortunately my green filter is very poor on the OIII emission line so a straight LRGB combine renders the object rather blue with my setup. (I really am going to get some good RGBs one of these days.) I corrected by doing a 24% Hard light application of the blue channel on the green. It was the best I could do.
A full size image is at:
http://www.jthommes.com/Astro/M97.htm
Scope - C8 at f7.7
Camera - Artemis285 LRGB filters
Mount - G11/Gemini (McClennan Gearbox modified)
Guiding - Megrez II at 1350 mm FL, DSI Pro, PHD Guiding
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/