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I'm going to build Telescop
Last night I won on eBay 3 elements136mm Lens cell. Focal length 457mm. It was advertised as APO, I don’t know if it is true but from my research on net I know it come from Opaque Projector and it is C/A corrected.
I’m going to build telescope with it. I never attempted to build telescope before so any suggestions are welcome. I’m thinking to build plywood tube and use 2” rack and pinion focuser. Focuser diameter is only 86mm so I will have to find way how to attach it to 136mm tube. Also, how to attach Lens cell to the tube without having correct tread?
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