This dataset captures Barnard's Loop, catalogued as Sharpless 2-276, a vast emission nebula in the Orion constellation. The acquisition spans three nights from November 3 to November 5, 2025, accumulating 5 hours of total integration time through 100 frames of 180 seconds each. The imaging setup pairs a Nikon 35mm f/1.8 lens with a ZWO ASI2600MC Air camera on an AM5N mount, filtered through an Askar E1 Dual Band 3nm filter isolating hydrogen-alpha and doubly ionized oxygen emissions.
The data is offered under a CC BY-NC 4.0 license, permitting copying, modification and redistribution for non-commercial purposes. Access requires a one-time purchase of approximately $7.90, providing calibrated sub-exposures suitable for further processing or integration with complementary datasets of this extensive supernova remnant structure.
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