That looks like a dust donut Graham, did you use flats..? The image looks very stretched/bright too so that would be emphasizing it too, so dialing that down will help. Nice image though
Hi Mike. I thought I used the correct flats but to be honest the camera may have moved a smidge. Thats why I thought reflections. Will have another look at my system. Cheers for commenting anyway, it get's kinda lonely down here !!
