Thread: star trails!!!!!
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Old 27-08-2007, 11:17 PM
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[1ponders] (Paul)
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Join Date: Nov 2004
Location: Obi Obi, Qld
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As Robin has put it, shorten your focal length or start tracking.

Longest exposure without star trails = 700/Focal Length of lens (for near 0deg Dec)
&
1000/FL for near the poles.

So 700/70=10sec
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