Arp 229 / NGC 507-508

Object Type(s)Galaxy
Relevant Catalog(s)All (Chron), Arp, NGC
Arp CategoryGalaxies with concentric rings
Obs. Lat/Long42° 17', 073° 57'
ConstellationAndromeda
Date and Time Observed2024-12-26 19:39:00
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 30m. Exposures 15s@300g, UV/IR Cut Filter. Darks subtracted, no flats. Dithered and recentered in SharpCap. No guiding.
DescriptionNGC 507 is a large and relatively bright galaxy where the galactic disc forms discrete rings of diminishing brightness as you move away from the core. This is categorized as a lenticular galaxy: more structure than a typical elliptical galaxy, but lacking the arm structure for a spiral. If you examine all of the galaxies so categorized in the Atlas (227-231), the first three (227-229) all depict a pair of galaxies, with a large, central lenticular galaxy. Confusingly, the other two (230-31) depict polar ring structures within a single, lenticular framework.
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