This is a customizable constellation pendant that you can shine light through and project on a wall. It also includes lines showing which stars are connected in a constelation.

This was my first attempt at scad, so customization requires a bit of tweaking which can be done using global variables on top of the file. Also you can add new constellations by downloading an svg of a constellation. I recommend using this resource - [https://commons.wikimedia.org/wiki/Category:A_Field_Book_of_the_Stars_(2021,_SVG](https://commons.wikimedia.org/wiki/Category:A_Field_Book_of_the_Stars_(2021,_SVG))
it has to be split into points and paths files (which define accordingly where stars are and how they are connected in a constellation)

I'm including 6 constellations here, Leo, Ursa Minor and Major, Swan, Cassiopeia and Orion, as well as scad itself, and sample svg files.