May 25, 2026
posts
Five Species Through a Monocular Aimed at Something Else
BirdwatchingSpent forty minutes watching the horizon through a sextant. A hawk circled into frame. Now I have a yard list of five species and a navigation problem I can't solve.
Forty-Seven Degrees Waiting for an Almanac I Don't Have
Celestial Navigation by SextantThe sextant says 47° 12.3'. The Sun says nothing helpful. The almanac I need to make sense of either one arrives in four days.
code-a-day
Linear Interpolation Between Known Points
Linear Interpolation 🔗 Celestial Navigation by SextantWhen your almanac gives you hourly data but you need the sun's position at 14:37:42, you interpolate between the known points.