This is a popular target this time of year - so here it is again. This image is a combination of OSC and H-Alpha on the old C8. Yes, the C8 still does some imaging for me if you can believe that. Image and exposure details are here:
http://www.jthommes.com/Astro/DSLR/M17.htm
Scope - C8 @f/6.3 (standard schmidt reducer corrector at proper spacing)
Mount - G11/Gemini
Guiding - Megrez II at 555 mm FL, DSI Pro, PHD guiding
http://www.jthommes.com/Astro/DSLR/M17.htm
Scope - C8 @f/6.3 (standard schmidt reducer corrector at proper spacing)
Mount - G11/Gemini
Guiding - Megrez II at 555 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/