This print will hold the three eyepieces that come with the OneSky telescope. Try printing it in glow-in-the-dark! The holes in the hinges have been sized to fit a short piece of filament, so are no additional parts needed to complete the print. This file has been optimized for single filament printers, but if you have a MMU, check out the other file on here.
The author hasn't provided the model origin yet.