Sh2-261 Lower's Nebula

Sh2-261 (Lower's Nebula or Sharpless 261) is an emission nebula in the northern region of Orion. The Lowers (father and son) were amateur astronomers and found this nebula on one of their photographic plates taken in 1939. The nebula image was captured with narrowband Ha filters and post-processed into a synthetic RGB color palette. Broadband RGB filters were used to capture star data which was blended into the starless narrowband image.

Image information: Date: Oct 2023; Exposure time: 38 hours; Telescope: TEC140ED APO with 0.72x AP Reducer lens; Camera: ASI ZWO 6200 MM; Mount: Paramount MX mount.