This dataset captures the Lion Nebula, catalogued as Sh2-132, through 5 hours of total integration time gathered between December 28 and December 30, 2025. The acquisition employed a NIKON 400mm f/2.8 lens paired with a ZWO ASI2600MC Air camera on an AM5N mount. Imaging was conducted using two specialized narrowband filter sets: 30 frames of 300 seconds each through the Askar E1 Dual Band 3nm Hα+OIII filter, and an identical 30 frames through the Askar E2 Dual Band 3nm SII+OIII filter. This dual-band approach isolates emission lines characteristic of ionized hydrogen, oxygen, and sulfur within the nebula. The data is available as a one-time purchase at approximately $7.90 under a CC BY-NC 4.0 license, permitting copying, modification, and redistribution for non-commercial purposes.
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