Stars look slightly cut off in bottom right

[matt_baker]

Was taking some test shots after adjusting backfocus. Corner stars have improved but don't have enough space on the threads to put anymore delrin spacers so stopped.

Couldn't help but notice that the bottom right of the stars are slightly cut off however there's nothing blocking that should cause that so not sure what may be causing it.

Would anyone be able to help?

 

 

 

[FunkyKoval35]

Yours stars are not cut off. If you look closely you will see that yours stars are elongated at the edge of entire picture. It looks like your sensor is to close to flatener.

 

 

https://optcorp.com/blogs/deep-sky-imaging/how-to-set-the-correct-back-focus

Edited August 10, 2023 by FunkyKoval35

[ONIKKINEN]

Could be tilt/collimation related as the backfocus looks pretty good. If i were you i would leave it as it is and not introduce any other aberrations by trying to fix something that is really not a big deal. In a stacked image these small corner issues will be very difficult to notice, if not impossible. If you have BlurXterminator then this gets completely fixed for sure.