Location of Photo:
Date/Time of photo:
Sept. 29, 2007
I used a Celestron CGE 1400 at f/7 and ST-402 ccdcamera. Telescope was autoguided by PHDGuiding using a ATK-1HS webcam on a AstroTech AT-66 f/6 refractor. Image is a stack of 6 5-minute subs in Luminance, and 3 3-minute subs in each red, green, blue.
Image shows a closeup of the ring structure in M57.