Engelhardsberg observatory
Rosette nebula (NGC 2244)
Sh2-157 in HAlpha RGB (click to enlarge)
Sh2-157 in HAlpha RGB (click to enlarge)
Sh2-157 in HAlpha (click to enlarge)
Objects: The famous Rosette nebula (NGC 2244) in the constellation of unicorn
Constellation: Unicorn
Telescope and camera: Newton 400mm, f 2.5, Focal length 1020 mm, ASA 3" Reducer 0,73x, ASI 6200MM Pro, 7x Filterwheel
Mount: ASA DDM 85, Software: Autoslew V5.1, Sequence V9
Exposure: RGB each panel 6 x 5 min bin 2x2, H-Alpha each panel 25 x 6 min bin 2x2, this is a 2 panel mosaic (north and south section)
Field of View: approximately 2,3° x 2,0°Date and Conditions: Jan 2026
Software used: acquisition: Maxim DL 5, Stacking: DeepSkyStacker 3.3.2, Processing: Adobe Photoshop CS6, PixInsight 1.8.9