i use an astrotech 72 ed ii telescope (a fairly cheap refractor) with a sony a600 camera mounted on a ZWO am5 mount to track the stars. I shot 60 1 minute exposures and 24 5 minute exposures and used software called pixinsight to stack and process them.

Wow that’s a great shot! Currently looking for telescope for my a6500 to try something like this. Wasn’t sure how the results would be.