Telescope Cover Calibrator

Telescope cover calibrator originally designed for the Askar 71F Flat-Field.  The goal was to make something cheap with regular off the shelf components.  It masquerades as an Alnitak Flip-Flat and has been tested to be working with their ASCOM drivers in NINA.  Brightness control has not been implemented.  As designed it does allow some light leak when closed so it is unsuitable for capturing dark frames without modification. 

Parts list is included in Instructions.pdf

Included models should work for:

Askar 71F - 88mm (Tested)
Askar 65PHQ - 88mm
Askar FRA 400 - 100mm
Askar SQA85 - 111mm
Askar 80PHQ - 112mm

CAD project here: https://cad.onshape.com/documents/a2c3da0bdddc28762e9f595e/w/7c507c9174ef6acd7898ba2e/e/8bf459af9c81b32ca96ddca1

I printed it using PETG, 0.4mm nozzle, four walls.

Don't forget to install any required USB drivers for your Ardrino clone on your astro PC. CH340 for the clone I used.