This dataset captures IC 443, commonly known as Gem A, a supernova remnant in the constellation Gemini. The acquisition spans from February to December 2025, accumulating 9.17 hours of total integration time. The imaging setup employed a NIKON 400mm f/2.8 lens paired with a ZWO ASI2600MC Air camera on an AM5N mount. Data collection utilized two narrowband filter configurations: 50 frames through the Askar E1 Dual Band 3nm Hα+OIII filter and 60 frames through the Askar E2 Dual Band 3nm SII+OIII filter, all at 300-second exposures. This combination of hydrogen-alpha, oxygen-III, and sulfur-II channels enables detailed mapping of the nebula's complex ionized gas structures. The dataset is available as a one-time purchase for approximately $14.90 under a CC BY-NC 4.0 license, permitting copying, modification, and redistribution for non-commercial purposes.
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