Friday, May 29, 2020

Barndoor tracker

My Instructable for a simple manual star tracker for astrophotography is now up (and a finalist in the Space contest). The idea is that you manually rotate a knob together in sync with a stopwatch to compensate for the earth's rotation. There is little that is innovative, except for the fact that I accidentally found that a carriage bolt head compensates for tangent error very nicely.


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