Arp 128 - LRGB

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.

 

Done