focal-plane
There are 3 repositories under focal-plane topic.
spacetelescope/pysiaf
Handling of Science Instrument Aperture Files (SIAF) for space telescopes
billbill100/Camera-Shutter-tester-Cheap-Easy-it-Works
Arduino / ESP32 based shutter tester using three lasers. This allows for correct focal plane curtain speed adjustment & even exposure across the frame.