I purchased a coma corrector for my ProNewton but I am not sure I'm getting better results. In fact, although on the left side of the image it seems the situation is slightly improved, on the right side it's making it definitely worse. Do I have backfocus problems? Is my mirror out of collimation? Is there anything else that you can see in the sample images?
I've made sure that there is no considerable tension from the holding screws on the primary mirror: the little rubber holds can be moved with pinky-finger kind of force.
I should, probably, add that the coma corrector is an Omegon as well. and the camera is an APS-c Canon EOS 250D.
Image one: without coma corrector
https://drive.google.com/file/d/153LIteNemmGRzdTgX_-y9HG9Em0Fjmrd/view?usp=drive_link
Image two: with coma corrector
https://drive.google.com/file/d/1G88FguHPuENST5szf2T6rAeC5gufPaPC/view?usp=sharing
Would be thankful if someone more experienced can shed some light.
I've made sure that there is no considerable tension from the holding screws on the primary mirror: the little rubber holds can be moved with pinky-finger kind of force.
I should, probably, add that the coma corrector is an Omegon as well. and the camera is an APS-c Canon EOS 250D.
Image one: without coma corrector
https://drive.google.com/file/d/153LIteNemmGRzdTgX_-y9HG9Em0Fjmrd/view?usp=drive_link
Image two: with coma corrector
https://drive.google.com/file/d/1G88FguHPuENST5szf2T6rAeC5gufPaPC/view?usp=sharing
Would be thankful if someone more experienced can shed some light.