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主題: 20046 Seronik (1993 FE15) 作者: peter 於 2023-11-24 09:01:52 20046 Seronik (1993 FE15)
https://skyandtelescope.org/astronomy-news/asteroid-named-for-sky-telescopes-gary-seronik/ Seronik Hinge Tracker => barndoor https://en.wikipedia.org/wiki/Barn_door_tracker https://garyseronik.com/build-a-hinge-tracker-for-astrophotography/ |