Thread: Is It Diagonal, Is It Secondary
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Old 28-07-2006, 03:52 PM
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asimov (John)
Planet photographer

asimov is offline 		 
Join Date: May 2005
Location: Bundaberg
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I always used to call it the 'diagonal mirror' Now I just call it whatever the term is popular nowadays (secondary mirror).

I've always called the primary mirror, 'the primary mirror'.
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