Observations

Everything photographed and recorded through a Celestron NexStar 127SLT — a 127 mm Maksutov–Cassegrain working at 1500 mm, f/11.8.

These are web copies — H.264 video and resized stills made from originals that stay on the telescope machine. Good for watching; never a source for stacking.

A capture’s recorded length and its playback length differ whenever the exposure was long enough that the camera could not keep up with the container frame rate. Both are listed when they disagree.