Solar Finder

This is a solar finder. (Always use appropriate filters when observing the sun!)
I designed it in small enough parts, so that I could print it on my resin printer.

There are now 3 Versions of the target:
- Original version ("Solar_Finder_Target.stl"): This version should be considered experimental! The printed spring should work with the right resin. It needs to be tough an remain flexible. Maybe a nylon-like resin might work? Be very careful when you remove the support, or you will break the "spring".
- v2 ("Solar_Finder_Target_v2.stl" and "Solar_Finder_Frame_v2.stl"): This doesn't use any springy part. A bit fiddly to adjust, because you always need to turn 2 screws at once.
- v3 ("Solar_Finder_Target_v3.stl" and "Solar_Finder_Frame_v3.stl"): This uses a spring from a ballpoint pen. A bit fiddly to assemble, but works great. I sourced the spring from a BIC ecolutions ballpoint pen. This spring has an outer diameter of 4.5 mm and a length of 25 mm. I also put a small piece of a