NGC 7822
NGC 7822 is a large gas region in constellation Cepheus, encompassing the star forming region Sharpless 171 and a young star cluster called Berkeley 59. The latter contains one of the hottest star nearby our sun, BD+66 1673, whose surface temperature is about 45’000 Kelvin, against 4’500 Kelvin at our Sun and it is 100’000 more luminous than it. It is this cluster that lits the whole area. On the right, the bright region contains several pillars of cold molecular gas and dark dust, commonly named elephant trunks.
This is an SHO narrowband image with RGB stars, photographed during September 2023 at Barcarena, Portugal, in a total of 46 hours.
Ha >> 204 x 300'' ( 17h35) - 18,24, 28 Sep.2023
Oiii >> 177 x 300'' (15h45) - 19,22 Sep.2023
Sii >> 154 x 300'' ( 12h50) - 24, 29 Sep.2023
SW EQ6-R Pro | TS Optics Triplet APO 800/115 | TS Optics TSFLAT2 0.79x | QHYCCD 268M | Optolong LRGB | Astronomik Ha 6nm, Sii 6nm, Oiii 6 nm | RBFocus Gaius-S | RBFocus Myrrdin 2.3
Acquisition: N.I.N.A. | Processing: Pixinsight
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