Arp 128

[dcrowson]

Arp 128 - part of Arp’s ‘E and E-like galaxies – close to and perturbing spirals’ – consists of:

PGC 4645 (UGC 827a) – the spiral on the right (west)
PGC 200189 (UGC 827b) – the elliptical on the left

Located about four degrees from M74 in Pisces, redshift shows that these are between 500 and 560 million light-years away.

Luminance – 25x600s – 250 minutes – binned 1x1
RGB – 12:9:8x300s – 60:45:40 minutes each – binned 2x2

395 minutes total exposure – 6 hours 35 minutes

Imaged October 7th, 8th, 10th and 13th, 2023 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.

LRGB - https://www.flickr.com/photos/dcrowson/ ... 3/sizes/l/



Dan

[Ylem]

Very nice Dan!