Homebrew false colour palette to help bring out the different regions. Interesting “pillars of creation” shown in the inset. Not the famous ones in the Eagle Nebula, but this object, along with the Elephant trunk nebula, also have similar features. A young star forming region in Cepheus, contains Sh2-171 and cluster Berkley 59.
It contains one of the hottest known local stars (marked) BD+66°1673, a O5V eclipsing binary. This star illuminates much of this nebula and forms the “pillars”. It is 45,000K and 100,000 time more luminous than the Sun.
| Object ID | NGC 7822, Sh2-171, Berkeley 59 |
| Details | Emission nebula Cygnus 2021-12-05 |
| Telescope | 250mm f4.8 Newtonian MPCC Tri-band |
| Camera | QHY168C @-15°C |
| Exposure(s) | 20x300s d,f,b |
| Capture | NINA |
| Processing | APP, Photoshop |