Thread: Spectroheliograph.. my version
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  #17  
Old 30-07-2022, 12:11 PM
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Merlin66 (Ken)
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Merlin66 is offline 		 
Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,927
Bojan,
There a guy in the US spray painting his large mirrors rather than aluminium vacuum coating. The details must be somewhere.....cheaper solution to test?
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