Arp 200 / NGC 1134
| Designation(s) | Arp 200, NGC 1134 |
| Object Type(s) | Galaxy |
| Relevant Catalog(s) | All (Chron), Arp, NGC |
| Arp Category | Galaxies with material ejected from nuclei |
| Obs. Lat/Long | 42° 17', 073° 57' |
| Constellation | Aries |
| Date and Time Observed | 2026-03-02 20:29:00 |
| Instrument | EdgeHD 8" w/f7 reducer-1,422mm FL |
| Camera | Player One Apollo-M Mini |
| Image Details | Up is 89.6 degrees E of N. Transparency: Fair. Seeing: Fair. Total integration time was 56m. Exposures 20s@225g, No Filter. Dithered and recentered in SharpCap. No guiding. |
| Description | Combining Arp's category (galaxies with "material ejected from nuclei") with his observing remarks: "Splash appearance on W side of galaxy points to low S[urface].B[rightness]. comp[anion galaxy]. 7' S." There's a comparison image in the gallery with arrows pointing out the companion, and a Hubble image follows that removes any doubt that that companion exists. The "splash appearance" is the mottled structure (barely visible in my image) just left of the companion, and behind the companion in the Hubble image. This is classic Arp, who was heavily influenced by Armenian astronomer Ambartsumian who argued for similar ejections from what we would today call AGN (active galactic nuclei, or supermassive black holes). A tough night given the full moon and reasonably clear but less than fully transparent skies. I was anxious to capture this target as it starts below 40° in the west, and would soon become unobservable until next year. |
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