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Old 21-02-2016, 09:45 AM
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LightningNZ (Cam)
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LightningNZ is offline
Join Date: Oct 2011
Location: Canberra
Posts: 952
Originally Posted by raymo View Post
In the video it is interesting to note that even though he was using a scope of only around 1000mm F.L. he got the star backtracking along the line, and still got some star elongation with only 30 secs exposure. As the star seemed to be backtracking nicely, what could he do to improve his
P.A? I would have thought that if the star was backtracking along the line, then his P.A. would have been good enough to get round stars for
longer than that.
For me it's generally because the weight has shifted and I have slop in the gears of my HEQ5, so the whole thing will be juddering around every time the worm turns.
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