M13 with AstroDMx Capture for Linux and a Maksutov

A Skymax 127 Maksutov was mounted on  a Celestron AVX mount. A QHY 5L-II-M CMOS camera fitted with a 0.5 focal reducer was placed at the Cassegrain focus.

40 x 30s exposures of M13 with matching dark-frames were made using AstroDMx Capture for Linux. The images were stacked in DeepSky Stacker and the resulting 32bit file was post processed in Afinity Photo, The Gimp 2.10 and ACDSee.

The equipment used

M13

Steve Wainwright and Nicola Mackin