I recently went through the process of collimating an RC and through the different methods it seems that the final confirmation, or even the best way to collimate, is through a defocused star. I’ve also read that to be very accurate you’ll need to test all four corners. Many will use an eyepiece. But with the ability to refresh the image and stretch it I found it quite easy to discern the diffraction pattern using a CCD. That all said it is quite a pain for slew and defocus in/out, focus again slew, etc…
I was thinking that the Mosiac wizard could be useful to setup 5 boxes, overlapped that could put the bright star in the the center and all 4 corners of FOV. Slew to: would be the quickest, don’t think you’d need to plate solve. The problem in automating this though would be the focus. Is there any way to automatically force the stepper to move to a specific intra/extra focal positions to expediate this? It wouldn’t take but a few mintues to figure out how far each specific scope/focuser would need to move to be appropriately defocused.
I think that everything needed is already in SGP, but to do this but would take some type of scripting to perform automatically. Hence “Feature Request.” There may not be enough interest in this but for me, after I slew to a bright star for my first quick focus and sync of the night if there was a “Check Collimation” button that could automatically slew to a bright stare, move the focuser to the predetermined focal position, take a shoot, move focuer the other way take a shot, slew each corners, take the shots for each of those and save these images so I could review collimation quickly.
Just a thought. Or am I over thinking this process?