This dataset captures IC 1318, the Butterfly Nebula in the Cygnus constellation near the star gamma Cygni, through 26.7 hours of total integration time. The imaging campaign ran from September 12 to September 16, 2025, using an Askar 400 telescope with a ZWO ASI2600MM Pro camera on an AM5 mount. The acquisition combines narrowband and broadband filters: 194 frames of 300-second H-alpha exposures through an Antlia 3nm filter, 55 OIII frames at 300 seconds, and 57 SII frames at 300 seconds, supplemented by 24 frames each of 60-second RGB exposures through Antlia 2-inch filters. This multi-filter approach provides data suitable for both narrowband palette compositions and natural-color processing. The raw data is available as a free download under a CC BY-NC 4.0 license, permitting copying, modification and redistribution for non-commercial purposes.
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