| Designation(s) | Arp 27, NGC 3631 |
| Object Type(s) | Galaxy |
| Relevant Catalog(s) | All (Chron), Arp, NGC |
| Arp Category | Spiral galaxies with one heavy arm |
| Obs. Lat/Long | 42° 17', 073° 57' |
| Constellation | Ursa Major |
| Date and Time Observed | 2024-04-22 00:57:00 |
| Instrument | EdgeHD 8" f10-2,032mm FL |
| Camera | ASI294mc-Pro |
| Image Details | Up is 94.0 degrees E of N. Total integration time was 26m. Exposures 30s@305g, UV/IR Cut Filter. 93% moon, intermittent clouds. Darks subtracted, no flats. Dithered and recentered in SharpCap. No guiding. |
| Description | This was a very challenging observation due to a 93% moon and high clouds; it took over an hour to capture 26m of data due to SharpCap's brightness filtering. In the event, I was very pleased with the quality of the capture. This is a charming spiral galaxy, largely symmetrical, with the one lower arm extended. With its compact diameter and apparently dense disc, it resembles a miniature Fireworks Galaxy. |
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