Thread: Best exposure time for narrowband imaging?
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Old 17-01-2015, 04:16 PM
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Amaranthus (Barry)
Thylacinus stargazoculus

Amaranthus is offline 		 
Join Date: Jan 2014
Location: Judbury, Tasmania
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If you are guiding well at 20 min, then use that. Longer is better for NB (within reason), if all else is holding up (tracking, wind, clouds etc.)
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