Arp 2 / UGC 10310
| Designation(s) | Arp 2, UGC 10310 |
| Object Type(s) | Galaxy |
| Relevant Catalog(s) | All (Chron), Arp |
| Arp Category | Spiral galaxies of low surface brightness |
| Obs. Lat/Long | 42° 17', 073° 57' |
| Constellation | Hercules |
| Date and Time Observed | 2025-07-28 23:40:00 |
| Instrument | EdgeHD 8" w/f7 reducer-1,422mm FL |
| Camera | Player One Apollo-M Mini |
| Image Details | Up is 96.1 degrees E of N. Transparency: Fair. Seeing: Good. Total integration time was 29m 45s. Exposures 15s@300g, No Filter. Dithered and recentered in SharpCap. No guiding. |
| Description | Apparently Arp discovered this galaxy in 1965. His remarks are pretty expansive (for him): "Low surface brightness dwarf. Large bright knot in arm appears almost stellar." What's fun for me about this target is that my little 8" EdgeHD with a mono sensor is able to go deeper than the best telescope in the world in 1966, even on a mediocre night with smoke haze and a crescent moon. To be sure the Hale Telescope is way better than mine, but I have the advantage of a CMOS camera and digital enhancements. |
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