IC 4592, commonly known as the Blue Horsehead Nebula, is a reflection nebula in Ophiuchus that glows with the scattered light of nearby stars. This dataset comprises 109 unfiltered frames captured with a Player One Posiden camera through a William Optics Zenth Star 73 refractor, mounted on a Sky-Watcher EQ6 Pro. Each exposure lasted 240 seconds, yielding a total integration time of approximately 7.3 hours across four nights from May 9 to May 12, 2026. The data is released under a CC0 1.0 Universal license, placing it in the public domain with no copyright restrictions, and is available as a free download for astrophotographers and researchers seeking calibrated raw frames of this distinctive blue reflection nebula.
Generated from the dataset's metadata; the author's description above is authoritative.