Removes tracking drift from a solar-eclipse timelapse by locking the sun's disc to a fixed point in frame, working from the finished video alone — no original stills required.
Written for a DWARF mini smart-telescope capture of the 12 August 2026 eclipse (1280×720, 30 fps, 75 s, HEVC), where the mount tracked imperfectly: slow drift punctuated by discrete correction jumps, the largest a 173 px lurch.