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Hi Gary, no flattener, I've been quite surprised how flat the field is on the Lunt and also the low noise and absence of amp glow on the A77 as well. The longer F7 on the Lunt over the F5 Skywatcher and the bigger, better objective of course seems to be managing quite well.
This was shot through a hole in the clouds which for some reason stayed clear while all around was covered, cloud gods must have been feeling beneficent. But there was a lot of high haze not helping either.
LP kills the frames pretty quickly if I go too long and I haven't got a 2" LP filter, the 1.25 introduces some vignetting and reflections but I'll try another arrangement of bits to fix some of that.
Major problem is I am having some problems with DS 3.3.3 handling the SONY ARW raw files. (I think ) If I stack a larger number it all goes white or stripey with vertical lines. Seems slightly better on the old XP SP3 at work than my Win 7 64 bit at home. It's erratic and annoying when you've spent a hour or two registering and assessing frames to have it all go kaput at the end.
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