Arp 55 (UGC 4881, V 155 and others) is a group of galaxies located approximately 555 million light-years away in Lynx. Part of Arp’s ‘Spirals with small, high surface brightness companions on their arms’ class, these are also collectively known as the Grasshopper.
Luminance – 24x600s – 240 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
360 minutes total exposure – 6 hours
Imaged March 1st, 2nd, 21st, 22nd and 23rd, 2022 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/ ... 5/sizes/l/
Dan
