Arp 215 / NGC 2782
| Designation(s) | Arp 215, NGC 2782 |
| Object Type(s) | Galaxy |
| Relevant Catalog(s) | All (Chron), Arp, NGC |
| Arp Category | Galaxies with adjacent loops |
| Obs. Lat/Long | 42° 17', 073° 57' |
| Constellation | Lynx |
| Date and Time Observed | 2026-03-01 20:41:00 |
| Instrument | EdgeHD 8" w/f7 reducer-1,422mm FL |
| Camera | Player One Apollo-M Mini |
| Image Details | Up is 330.1 degrees E of N. Transparency: Good. Seeing: Fair. Total integration time was 1hr 5m 15s. Exposures 15s@225g, No Filter. Dithered and recentered in SharpCap. No guiding. |
| Description | Arp's "Adjacent Loops" category is problematic in my experience. He uses it to describe galaxies with extensive stellar streams or dust lanes surrounding a galaxy, with an apparent gap around the disc. But in my experience, it is applied to low surface brightness features that the 200" Hale, and its film plates, can't resolve properly. And so it is here, I think. Look, a 200" mirror gathers 625x as much light as my 8" SCT. BUT, the film emulsion in the best case is about 30x less sensitive than my CMOS camera. Worse, the emulsion is blind to red and near-IR wavelengths. That's why my capture here is roughly equivalent to Arp's in terms of depth. Bottom line, if you look at the "survey" image in the gallery, produced at the Perimeter Institute from a composite of disparate images of this target, the adjacent "loops" appear to be a dim galaxy in the process of being absorbed into NGC 2782. Captured on a night with a 94% moon. |
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