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Old 11-05-2018, 07:22 PM
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RickS (Rick)
PI cult recruiter

RickS is offline
 
Join Date: Apr 2010
Location: Brisbane
Posts: 10,584
Hi Alex,

Was it an apodizing mask?

http://www.telescope-optics.net/apodizing_mask.htm

http://www.astronomyhints.com/apodize.html

Cheers,
Rick.
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