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12" x 9" x 1/4" Optical flat plate
This flat parallel optical plate was imported from the US a few years ago.
Still unpacked!
It was going to be used on a spectroheliograph application - think of it as a glass plate holding the newtonian secondary in a scope up to 8" or 8.5" aperture. No more spikes from the secondary spider....
Could be cut and drilled by your local glazier to suit.
Asking $20 plus postage.
Any questions, just ask.
Last edited by Merlin66; 25-11-2017 at 09:20 PM.
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