[g__day (Matthew)]

I have a Lumicon OAG in my imaging train on my C9.25 scope. Plugged into my pick off prism is an Meade DSI II Pro. I note in PHD that there is bad coma on the right hand side of my screen - it that a sign the prism isn't mounted correctly or that the OAG isn't mounted fully level to the centre of the image path?

I have posted a screen grab RA is left to right, Dec is Up and dow). Just wonder if anyone has ever seen this or has any ideas?

Thanks,

Matthew