Engelhardsberg observatory

Sh2-171 in Hubble Palette

Sh2-171 Hubble Palette (click to enlarge)

Objects:    Sh2-171 (NGC 7822) is an emission nebula in the constellation of Cepheus

Constellation:  Cepheus

Telescope and cameras: Newton 400mm, f 2.5, Focal length 1020 mm, ASA 3" Reducer 0,73x, ASI 6200MM, 7x Filterwheel

Mount: ASA DDM 85, Software: Autoslew V5.1, Sequence V9

Exposure: 75x6min H-Alpha, 50x6min OIII and SII

Date and Conditions: December 2025

Software used: acquisition: Maxim DL 5, Stacking: DeepSkyStacker 3.3.2, Processing: Adobe Photoshop CS6, PixInsight 1.9