hobby #28

Star-Drift Compass Calibration Cards

Capture short star-trail stacks pointed near Polaris from a known airfield spot, then use a script to convert the drift into true-north bearings and print wallet cards for preflight compass checks.

Asking Polaris for a Second Opinion on North

Polaris is 0.7 degrees off true north. My compass is worse. Tonight we're going to have a conversation.

code-a-day tied to this hobby

Fixed Stars Need Fixed Points Fixed-Point Arithmetic

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