NGC 7822 is a young star forming complex in the constellation of Cepheus. The complex encompasses the emission region designated Sharpless 171, and the young cluster of stars named Berkeley 59. The complex is believed to be some 800–1000 pc distant, with the younger components aged no more than a few million years. The complex also includes one of the hottest stars discovered within 1 kpc of the Sun, namely BD+66 1673, which is an eclipsing binary system consisting of an O5V that exhibits a surface temperature of nearly 45,000 K and a luminosity about 100,000 times that of the Sun. The star is one of the primary sources illuminating the nebula and shaping the complex’s famed pillars of creation-type formations, the elephant trunks.
Sharpless 2-170, or the Little Rosette Nebula. is located nearby. The two nebulae are not related, with NGC 7822 being about 4,600 Light Years away from each other.

Telescope: Planewave Delta Rho 350 f3.0
Mount: Astro Physics 3600GTO “El Capitan”
Camera: ZWO ASI461MM pro / EFW-7
Guider: ZWO OAG-L-68 / ZWO ASI174mm Mini
Filters: Astrodon II 50mm Sq LRGB

L: 165×5 mins = 825 mins, R: 36×5 mins = 180 mins, G: 36×5 mins = 180 mins, B: 36×5 mins = 180 mins

Total Imaging Time: 22h 45m

Data Imaged remotely on 7 nights during November, 2025.
Data acquisition & Processing by David Churchill.

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