This dataset captures NGC 2237, commonly known as Rosette A, through 6.25 hours of total integration time. The acquisition employed a NIKON 400mm f/2.8 lens paired with a ZWO ASI2600MC Air camera on an AM5N mount. Data collection spanned December 13 to December 15, 2025, using two specialized narrowband filters: 40 frames of 300 seconds each through the Askar E1 Dual Band 3nm Hα+OIII filter, and 35 frames of 300 seconds through the Askar E2 Dual Band 3nm SII+OIII filter. This combination isolates key emission lines from the nebula's ionized gases. 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.
Generated from the dataset's metadata; the author's description above is authoritative.