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This simple 3D printed polarscope illuminator was designed to work with EQ3 series mounts, but will work with any mount that has a standard 1.25" aperture above the polarscope.

Additional parts are just an LED, a CR2032 button cell and possibly a small slip of paper.

Full details are given in my upcoming book, Practical Projects for Astronomers.

Download the STL files here.


3D Printed POlasrcope Illuminator