Wednesday, May 04, 2011

Messier 13; Diamants in the sky

Last night I couldn't get any sleep - lucky for me the sky was so clear - made it also very cold! I was able to add 20 more frames to the image of 2010. This stack is a total of 40 frames. The total exposure time is allmost 4 hours. NGC 6207 is visible at the top right part of the frame. Even a tiny galaxy called IC4617 is visible (lies between both objects).

Tuesday, May 03, 2011

The tail of the whale (and the Hockeystick)

All those clear nights are getting pretty exhausting. :-)
Yesterday the telescope was pointed at an interacting group of galaxies; The Whale and the Hockeystick. These galaxies (including the small elliptical galaxy near the Whale) had close encounters in the past. This group lies at a distance of approx. 55 million lightyears. The total exposure time was just over two hours.