An obscure one in Perseus. The larger is open cluster inside an emission nebula NGC 1624, also known as emission nebula Sh2-212, the smaller Sh2-211. Now known as the Tribble Nebulae after “Star Trek: The Trouble with Tribbles”. The dark patch top right is the dark nebula Barnard 20.
| Object ID | The Tribble Nebulae NGC1624/Sh2-212 and Sh2-211 Dark nebula Barnard 20 |
| Details | Open Clusters Emission nebulae Perseus 2021-11-12 |
| Telescope | 250mm f4.8 Newtonian MPCC Tri-band |
| Camera | QHY168C @-15°C |
| Exposure(s) | 15x300s d,f,b |
| Capture | NINA |
| Processing | APP, Photoshop |