IC 443, also known as Gem A, is a supernova remnant captured through 24 hours of total integration time. The dataset comprises 288 frames taken with an Optolong L-Ultimate Ha-OIII 2" filter, each exposed for 300 seconds. Data collection spanned from December 25, 2025, to January 19, 2026, using an Askar FRA 300 telescope paired with a ZWO ASI294Mc Pro camera on a Sky-Watcher EQ6 Pro mount. The dual-band narrowband filter isolates hydrogen-alpha and oxygen-III emission lines, revealing the complex filamentary structure characteristic of this ancient stellar explosion. Available as a one-time purchase at approximately $29.90, the dataset is released under a CC BY 4.0 license, permitting copying, modification, and redistribution with appropriate attribution to the author.
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