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HELP!!! I Need A New Secondary Mirror. What Size?

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Posted by Ville Vels/">Ville Vels on May 9, 1999 18:47:06 UTC

I have ruined the surface of my secondary mirror while cleaning it. I'd like to buy a new one but I can't figure out what size do I need. I measured the shorter axis of the mirror and it's exactly 3.5mm. That is 1.377 inches. I surfed the web and only found 1.3 inch mirrors. The next size is 1.52 inches. Is the 1.3" mirror the one I need or do I have a non standard size mirror? Please help!

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