Quote:
Originally Posted by Geochron
I can certainly try that Pete but I always seem to have problems mostly at the top left corner rather than across the frame. I am also rather suspicious of the ZWO camera lens adapter which seems have a bit of remnant wobble ie the lens is not an entirely firm fit. Maybe I have a dud unit there?
cheers, Jon
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If it's just one part of the image it could well just be tilt. I run my Samyang at f2.8 & at that f-ratio everything needs to be just so much more stringent. What might work fine at f6 can be terrible at f2.8 & I don't think those lens adapters are the finest examples of mechanical precision (I use one too). You can try shims made from foil etc or buy commercial ones.