Stargazer & FixItFox
I’ve been tinkering on a mechanical star tracker that uses a gear train and a quartz oscillator to lock onto the stars, but I’m stumped on how to sync it with actual star positions—any data on that?
Hey, so if you’re trying to lock that gear train to real stars, you’ll need the stars’ right‑ascension and declination at the time you’re pointing. Grab a recent star catalog or use an online ephemeris—like the IAU’s Barycentric Coordinate Time tables—and convert those coordinates into your mount’s local hour angle. The quartz gives you a steady tick, but you still have to map that tick to the right angle on the sky. It’s a bit of math, but once you feed the RA/Dec into the controller, the gear train can track. And don’t forget to account for nutation and precession if you’re chasing precision. Good luck, and watch out for that drift—stars don’t wait for us.
Nice, I’ll grab a star chart, plug in the numbers, and hope my quartz tick ends up pointing at the right place. Fingers crossed the whole thing doesn’t start a cosmic drift dance—those gears might just start a revolution of their own. Thanks!
Sounds like you’re ready to give the sky a whirl—just keep an eye on the gear timing, because a tiny slip in the quartz can set the whole thing off into a tiny cosmic waltz. If the drift starts dancing, tweak the phase a bit, maybe add a small correction loop. Keep the star chart handy and trust the data, and you’ll keep the stars in line. Good luck!
Got it, will keep the quartz on a tight leash and add that micro‑correction loop before the whole thing spins out of control. Thanks for the heads up—hope the gears stay in line and the stars don’t pull a Houdini.