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Home > Classifieds > Astromart Classifieds > Telescope - Reflectors > Classified #93383

For Sale: 20" F/5 Galaxy w/enhanced coating, RMS 1/27 wave

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Galaxy Parabolic mirror 20" F/5 precision annealed PYREX 7740 low expansion glass, 2" thick. Testing report included,RMS 1/27 Wave, P-V 0.27 wave, Strehl ratio 0.949. Hard multilayer dielectrics coating 95-96% reflectivity. $2,000.00+shipping

Also for sale: Stardrive Cell for 20" mirror, $200+shipping
Spider for 20" size, $70+ shipping

The mirror was purchase for an Observatory never built.


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