Arp 82 / NGC 2535 / NGC 2536

Designation(s)Arp 82, NGC 2535, NGC 2536
Object Type(s)Galaxy
Relevant Catalog(s)All (Chron), Arp, NGC
Arp CategorySpiral galaxies with large high surface brightness companions on arms
Obs. Lat/Long42° 17', 073° 57'
ConstellationCancer
Date and Time Observed2026-03-04 20:35:00
InstrumentEdgeHD 8" w/f7 reducer-1,422mm FL
CameraPlayer One Apollo-M Mini
Image DetailsUp is 180.1 degrees E of N. Transparency: Good. Seeing: Fair. Total integration time was 30m. Exposures 20s@225g, No Filter. Dithered and recentered in SharpCap. No guiding.
DescriptionOn the surface this seems like an M51 clone; then you look closer and see a long tidal tail emanating from NGC 2535. Arp remarks: "Arm opposite comp. extremely long." Recent studies have suggested that the "long arm" was caused by a close fly-by, and that the two galaxies are in the middle of a second pass. The interactions stimulated new star formation.

Cut short because the full moon was getting higher, and I didn't think additional integration time would help much.
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