Upgraded my camera to a d610 Nikon, now I'm noticing a lot of coma...well what appears to be coma anyway. I would love to hear what you think. The supportive equipment newton 8inch f5, mpcc standard spacing(on the ring), orion awesome autoguider.
Attached is a cropped 40% of horsehead single 5min sub @400iso.
These stars are bad close up, only other thing I think it could be is collimation? or do I need to buy a better corrector?
Cheers.
