Thread: How accurate is a Bahtinov mask?
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Old 23-09-2009, 03:04 PM
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JohnG (John)
Looking Down From Above

JohnG is offline 		 
Join Date: Dec 2005
Location: Cootamundra, NSW
Posts: 1,711
You leave your camera attached to your scope, in the same locked focus position and orientation as when you took your lights, also leave any filters in place as well, you then take your T-Shirt Flats.

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