Arp 327 / NGC 1875 / Hickson 34

Designation(s)Arp 327, NGC 1875, Hickson 34
Object Type(s)Galaxy
Relevant Catalog(s)All (Chron), Arp, NGC
Arp CategoryChains of galaxies
Obs. Lat/Long42° 17', 073° 57'
ConstellationOrion
Date and Time Observed2025-01-02 20:41:00
InstrumentEdgeHD 8" w/f7 reducer-1,422mm FL
CameraPlayer One Apollo-M Mini
Image DetailsUp is 277.2 degrees E of N. Total integration time was 33m. Exposures 15s@300g, UV/IR Cut Filter. Darks subtracted, no flats. Dithered and recentered in SharpCap. No guiding.
DescriptionThis is a tiny, dim group consisting of four galaxies: the brightest is an elliptical galaxy, NGC1875 (13.7m, 0.8'x0.7'). Then, moving up the chain (and the image): PGC1716 (18.3m, 0.2'x0.2'), PGC17175 (17.1m, 0.4'x0.2'), and PGC17173 (17.4m, 0.4x0.2m). The smaller, dimmer galaxies appear to be younger and spiral. Consistent with the close proximity of the four, filaments connecting them are evident. One imagines that the ultimate outcome will be that all 3 end up absorbed into NGC1875. Imaged on a windy night that required careful use of SharpCap's brightness and FWHM filtering. I was hoping to capture up to an hour of integration, but clouds closed out observing prematurely.
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