This IC 1318 dataset captures the Butterfly Nebula region near gamma Cygni through 38.3 hours of narrowband integration collected between July 17 and August 21, 2026. The data comprises 89 frames in hydrogen-alpha (14.8 hours), 81 frames in oxygen-III (13.5 hours), and 60 frames in sulfur-II (10 hours), all captured with Antlia 3nm filters at 600-second exposures. Imaging was performed using a Sky-Watcher Esprit 120mm refractor paired with a ZWO ASI2600MM Pro monochrome camera on an AM5 mount. The dataset is offered under a CC0 1.0 Universal license for approximately $22.90 as a one-time purchase, providing calibrated monochrome sub-frames suitable for custom narrowband processing of this expansive emission nebula complex.
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