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Here is the eyepiece projection unit with a microfiche lens installed, and the full set of lenses.

This shot is the unit itself without lens. It was made from a broken SCT 6.3 reducer so the threads were already on both sides. Rob Wood machined the inner aluminum piece to hold the lenses. Instead of eyepieces, I have a set of microfiche projection lenses, which were made for this exact purpose and work very well.

My reasoning in building this was that most of normal eyepiece projection units consist of only air space. I would rather use my flip-mirror for the air space and gain the par-focal advantages that using it has, as well as easier framing. See the photo below for the compact form-factor.

You can see the unit installed and ready to be inserted into the telescope.


All images on this site copyright Gregory Pyros, 2000 - 2007. Non-commercial use is permitted with proper credit.