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Old 12-11-2008, 08:21 PM
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Octane (Humayun)
IIS Member #671

Octane is offline
 
Join Date: Dec 2005
Location: Canberra
Posts: 11,159
pjphilli,

How long can you expose without trailing stars?

Take as many images as you can, that show no visible trailing. Also, make sure you are well polar-aligned, otherwise you will suffer from field rotation in your images.

Also, take dark frames and flat frames.

Regards,
Humayun
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