NGC 6164, sometimes called the Dragon's Egg Nebula, appears here as a narrowband oxygen-III dataset captured on a single night in May 2026. The acquisition consists of 197 frames at 60 seconds each through an Optolong O-III 7nm filter, totaling approximately 3.3 hours of integration time. The imaging train combined a Sky-Watcher Quattro 250P reflector with a Toupteck 2600MM monochrome camera, mounted on an HEQ5 Pro equatorial head. This bipolar emission nebula, created by a massive Wolf-Rayet star shedding material, shows intricate structure in the doubly ionized oxygen line at 500.7 nanometers. The dataset is released under CC0 1.0 Universal, placing it in the public domain for unrestricted use and free download.
Generated from the dataset's metadata; the author's description above is authoritative.