| Designation(s) | Arp 233, UGC 5720, HARO 2 |
| Object Type(s) | Galaxy |
| Relevant Catalog(s) | All (Chron), Arp |
| Arp Category | Galaxies with the appearance of fission |
| Obs. Lat/Long | 42° 17', 073° 57' |
| Constellation | Ursa Major |
| Date and Time Observed | 2024-02-21 00:00:35 |
| Instrument | 8" EdgeHD SCT |
| Camera | ASI294mc-Pro |
| Image Details | Up is 275.1 degrees E of N on positive images; 90 degrees east of N on inverted images. Total integration time was 18m. Exposure 30s@305g, UV/IR Cut Filter. Darks subtracted, no flats. Dithered and recentered in SharpCap. No guiding. |
| Description | This is a tiny object which stresses the limits of my 8" SCT with 294 sensor. Frankly, the 18m of integration was totally inadequate. I was new to this and clearly didn't know what I was doing. That said, the "appearance of fission" is tough to see, even in Arp's imagery, and I'm not sure even a few hours with my equipment would suffice. I've taken my best shot at identifying the fission in image #2 using Arp's plate. As well, Arp remarks, "Narrow faint absorption lane in SE direction". This makes another subtle appearance on Arp's plate which I illustrate in image 3. |
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