The Seagull Nebula dataset comprises 24.3 hours of integration time collected between February 22 and April 1, 2026. The acquisition employed a ZWO ASI 533MC Pro camera paired with an Askar 71F telescope on an AM3 mount. Data capture utilized two narrowband filters: 320 frames through the Optolong L-Extreme HA-OIII 7nm filter and 166 frames through the Askar Color Magic D2 SII-OIII 6nm filter, all at 180-second exposures.
This raw dataset is available for approximately $4.90 as a one-time purchase under a CC BY-NC 4.0 license, permitting copying, modification and redistribution for non-commercial purposes. The dual-filter approach provides both hydrogen-alpha and oxygen-III data alongside sulfur-II and oxygen-III channels, offering flexibility for bicolor or tricolor processing of this emission nebula complex.
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