Finderscope adapter Skywatcher to ZWO ASI290 Mini (M52 to M28.5)

thingiverse

I've created this remix to attach my ZWO ASI290 Mini to Skywatcher 9x50 Finderscope. I used Blender to scale down one of the threads on the original project and extended it a bit to make sure all is stable and fits well. I have no problems with backfocus with the setup as on the pictures. After focusing with the front lens on the finderscope, stars are sharp enough for guiding (used bahtinov mask for 9x50 finderscope from another project on this site). Skywatcher finderscope has M52 thread and ZWO Mini cameras do have M28.5 apparently (with the black adapters that come with the camera on - see the picture). This should also work with ASI120 Mini I think as it seems to have the same threads. In case it doesn't fit and you can't screw the camera on, try printing it scaled down by 0.05%.