This dataset captures Sh2-308, commonly known as the Dolphin Head nebula, through 20.4 hours of total integration time. The imaging campaign ran from October 12 to December 21, 2025, using a Redcat 51 telescope paired with a ZWO ASI1600MM Pro camera on a Sky-Watcher Star Adventurer GTI mount.
The collection emphasizes oxygen-III emission with 207 frames through a Baader 8.5nm OIII filter at 300 seconds each, supplemented by 560 RGB frames at 20 seconds per exposure using an Astronomik DeepSky RGB 36mm filter. This combination provides both deep narrowband detail and broadband colour information for the emission nebula surrounding the Wolf-Rayet star EZ Canis Majoris.
The data is available as a free download under CC BY-NC 4.0 license terms, permitting copying, modification and redistribution for non-commercial purposes.
Generado a partir de los metadatos del conjunto; la descripción del autor anterior es la autoridad.