M7, Ptolemy's cluster, is a favorite of mine to photograph. This capture is the first evening I used Linux and Ekos to capture, and also the first time I used Siril to do the post-processing. I'm happy with the result, especially the dark portions of the star cloud.

William Optics Zenithstar 73
Canon T6i, full astro-modified
Celestron CGEM mount
Kstars/Ekos on Linux

20x60" Lights
10 darks
20 flats
10 biases
Stacked and processed in Siril on Linux
Final processing in Gimp 2.10 Linux