This dataset captures Sh2-91, a faint supernova remnant fragment in Cygnus catalogued as G65.3-5.7, over three nights between July 2 and July 5, 2025. The acquisition totals 14.08 hours of integration time using a Sky-Watcher Esprit 120mm refractor and ZWO ASI2600MM Pro camera on an AM5 mount. Narrowband imaging employed 121 frames through an Antlia 3nm H-alpha filter and 48 frames through an Antlia 3nm OIII filter, each with 300-second exposures.
The data is offered under a CC BY-NC 4.0 license, permitting copying, modification and redistribution for non-commercial purposes. Access is available as a one-time purchase at approximately $9.90, providing calibrated sub-exposures suitable for processing this delicate remnant structure in the rich star fields of Cygnus.
Generado a partir de los metadatos del conjunto; la descripción del autor anterior es la autoridad.