Arp 253

Posted by dcrowson
on Thursday, February 24, 2022
Arp 253 (VV 52) consists of UGCA 174 (PGC 27828, VV52a and others), the galaxy on the left above center and UGCA 173 (PGC 27817, VV 52b and others), the one on the right. Part of Arp’s “Galaxies (not classifiable as S or E) - appearance of fission” class, these appear to be located approximately 95 million light-years away in Sextans.

MCG-01-25-033 (PGC 27825 and others) is the somewhat odd spiral below Arp 253. This appears to be another that should have made Arp’s list.

Luminance – 24x600s – 240 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2

360 minutes total exposure – 6 hours

Imaged over eight nights in November and December, 2020 from Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG STF-8300M on an Astro-Tech AT12RCT at f/8 2432mm.

To leave a comment you must be a member of our community.
Login to your account now, or register for an account to start participating.
No one has commented yet.
Join our Community!

Our community is FREE to join. To participate you must either login or register for an account.


Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. View our Privacy Policy.

Find us on Facebook