NGC7822May 17, 2020
This image of NGC7822 id composed of two panels of 14 and 15 Ha frames respectively of 1800s exposition. It has been taken with the FSQ telescope and QHY90A CCD on August 2016 for a total time of 14hr 30m.
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. (Wikipedia)
The fainter nebulosity that surrounds the top side of NGC 7822 is catalogued as NGC 7762.