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Old 22-01-2021, 02:49 PM
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pmrid (Peter)
Ageing badly.

pmrid is offline
 
Join Date: May 2008
Location: Cloudy, light-polluted Bribie Is.
Posts: 3,742
Anyone junking an old SCT.

I’m chasing a spherical convex mirror - like a SCT secondary. I plan to use it with an artificial star for collimating in a confined space in semi-daylight.
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