M3, also known as NGC 5272, is a globular cluster captured over two nights in late April 2026. This dataset comprises 204 frames of 30 seconds each through an Optolong L-Pro 2 inch filter, totaling 1.7 hours of integration time. The imaging train consisted of a Sky-Watcher Evostar 80 ED telescope paired with a ZWO ASI533MC PRO camera, mounted on a Harmonique EQ equatorial mount.
The data is offered under a CC0 1.0 Universal license, placing it in the public domain with no copyright restrictions. Access is available through a one-time purchase of approximately $4.90, providing raw frames suitable for custom processing, stacking experiments, or educational projects focused on this ancient stellar system.
Generated from the dataset's metadata; the author's description above is authoritative.