Mini Borg 45Ed woes

[madjohn]

Hi folks,

I bought a Mini Borg 45Ed a while back and after taking some pictures of Andromeda (I posted this a while back see :-

http://stargazerslounge.com/imaging-widefield-special-events-comets/111806-andromeda-using-my-new-borg-45-a.html

I was astounded to see very severe coma at the edges, not what I was expecting at all considering its a F7.2 ED refractor!!)

I was wondering if anybody out there could advise on how to correct for this, I have a WO field flattener which I could mount if I bought the 2" focuser, however it's a lot of money (all Borg products are!) I want to know my options before I make a potentially expensive mistake.

Anybody using the 45ED for astrophotography who can help me?

Any help or advice from anyone would be very much appreciated:icon_salut: as since the Andromeda experience I haven't used it

Cheers John