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Old 22-01-2021, 02:46 PM
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pmrid (Peter)
Ageing badly.

pmrid is offline
 
Join Date: May 2008
Location: Cloudy, light-polluted Bribie Is.
Posts: 3,677
Spherical convex mirror

I’m chasing a spherical, convex mirror - like a secondary out of an SCT or similar. Anyone who has junked an old scope might have one. I want to use it with an artificial star for collimating an RC8.
 

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