Thanks Kev, Dunk, Rick; it was all I could get, as, for some unknown
reason I was unable to get longer subs without trailing. If the high cloud disappears I'll try again tonight.
Yes, there are times when aperture is advantageous Kevin.
Now I have the latest PS and a book on the subject, maybe I'll be able to reduce/ remove vignetting eventually,
without resorting to cropping it out.
raymo
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