The Rosette Nebula dataset captures NGC 2237 through 28.8 hours of narrowband imaging acquired between January 24 and March 1, 2025. The data comprises 157 frames in hydrogen-alpha, 102 frames in oxygen-III, and 87 frames in sulfur-II, all captured with Antlia 3nm filters at 300-second exposures. Imaging was performed using a TS-130 APO refractor paired with an ASI294MM Pro monochrome camera on an AM5 mount.
This tri-band narrowband dataset isolates the emission lines characteristic of ionized hydrogen, oxygen, and sulfur within this stellar nursery in Monoceros. The substantial integration time across three channels provides the signal depth needed for detailed processing of the nebula's intricate structure. Available for approximately $17.90 under a CC BY-NC 4.0 license, the data may be copied, modified, and redistributed for non-commercial purposes.
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