NGC 7822 / Cederblad 214 / Be 59 / NGC 7762 | |||
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This nebula complex lies in the constellation Cepheus, and reportedly lies approximately 3,000 light years away from our solar system. At lower left is emission nebula NGC 7822, while the upper right hydrogen complex is designated Ced(erblad) 214 (also Sharpless 2-171). Lying in the center of Ced 214 is a small, relatively young cluster of stars bearing the designation Be(rkeley) 59, with an estimated age of 1.8 Myrs. It has been estimated that this star cluster contains approximately 1500 members, and the total mass of the cluster is about 950 solar masses. The cluster is associated with the ionized hydrogen region Ced 214 / Sh 2-171. At upper left is an older, intermediate-aged loose open cluster, NGC 7762, with an estimated age of 1.8-2.5 Gyrs. The cluster is estimated to have a total mass of ~ 400 solar masses, and is quite dispersed. This image is dominated by H-alpha emissions, with only the faintest contributions from O3 and S2. | |||
| Optics: | Stellarvue SVQ100 | ||
| Camera: | Starlight Xpress SX-46 | ||
| Exposure info: | 290 mins Ha / 250 mins O3 / 320 mins S2 | ||
| Filters used: | Astrodon H-alpha / O3 / S2 | ||
| date: | October 2019 (reprocessed November 2023) | ||
| color palette: | Red = H-alpha / Green = SII / Blue = OIII with selective color adjustments | ||
References 1. "Young Cluster Berkeley 59: Properties, Evolution, and Star Formation." Panwar, Pandey, Samal, Battinelli, Ogura, Ojha, Chen and Singh, The Astronomical Journal, January 2018 2. "NGC 7762: A forgotten moderate age open cluster," Patat and Carraro. Astronomy & Astrophysics, December 1995 3. "Radial Velocities and Metallicities of Red Giant stars in the Old Open Cluster NGC 7762," Carraro, Semenko and Villanova, October 2018. | |||