This dataset captures Sh2-240, a faint emission nebula in the constellation Auriga, through 24.25 hours of narrowband integration. The acquisition spans from December 17 to December 31, 2025, using an Askar SQA70 telescope paired with a ZWO ASI 2400MC camera on an AM3 mount. All 485 frames were captured through an Altair Ha-OIII 4 nm dual-band filter at 180-second exposures, isolating hydrogen-alpha and oxygen-III emissions that reveal the nebula's ionized gas structures. 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 one-time purchase for approximately $21.90.
Wygenerowano z metadanych zestawu; opis autora powyżej jest wiążący.