| Designation(s) | Arp 81, NGC 6621, NGC 6622 |
| Object Type(s) | Galaxy |
| Relevant Catalog(s) | All (Chron), Arp, NGC |
| Arp Category | Spiral galaxies with large high surface brightness companions on arms |
| Obs. Lat/Long | 42° 17', 073° 57' |
| Constellation | Draco |
| Date and Time Observed | 2024-09-02 21:28:00 |
| Instrument | EdgeHD 8" f10-2,032mm FL |
| Camera | ASI294MC-Pro |
| Image Details | Up is 179.6 degrees E of N. Total integration time was 20m 30s. Exposures 30s@305g, UV/IR Cut Filter. Darks subtracted, no flats. Dithered and recentered in SharpCap. No guiding. |
| Description | Captured on a dark night but where clouds closed in and forced me to shut down early. A pair of interacting spiral galaxies with one (6621) exhibiting a long arm separated from the spiral and connecting to the smaller one (6622). The two certainly appear to be in the process of merging, and I would love to see a simulation of the relative motion which created the long, wrap-around separation of the arm. |
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