M27
M27

M27 -- again. 138 stacked subframes, each 20 sec @ ISO 3200, so this is a 46-minute exposure (before it ran into the trees.) Tracking was a little off, with some elongation of the stars in the NW direction. Quite a bit better than the last time I shot this (7/4/14; https://www.facebook.com/photo.php?fbid=10100559170055524&;l=f0e56d834d ). This reaches down to almost 17th magnitude.) Highly processed, so some artifacts appear in the sky to the lower-right. (M27-20140723-0141-20s-I3200-138f-22d-CombineFilesExcAvg_1-crop-cb-ssr(3)-dd-HSL-mc-sd-wvlt-mc-sd-wvlt-arl(2)-hslmc-cb-HSL) - Steve Cooperman