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Home > Classifieds > Astromart Classifieds > Filters > Classified #182697

For Sale: 1.25" star diagonal [SOLD]

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I have a 1.25" star diagonal for sale, $29 plus shipping. Since I have access to an interferometric optical tester, I was able to test the flatness of this diagonal. The values are as follows: for a 2mm x 2.5mmm central sample area this mirror has a P to V of 1/7 wave and a RMS of 1/190 wave!

So a good mirror mounted in a cheap plastic holder (I don't have facility to check for perpendicularity in the mount.) I will also throw in a compact 1.25" to 2" adapter (as pictured). Thank you.
 

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