Leo II (PGC 34176) Dwarf Galaxy 

Leo II (PGC 34176) Dwarf Galaxy Astrophotography Martin Rusterholz

Leo II (PGC 34176) Dwarf Galaxy (or Leo B) is a dwarf spher­oid­al galaxy (type E0 pec) about 690,000 light-years away in the con­stel­la­tion Leo. It is a satel­lite galaxy of the Milky Way with an appar­ent of 12 x 11 arcmin and mag 12.6. Leo II is thought to have a core radi­us of 570 ± 41 lightyears and a tid­al radi­us of 2022 ± 102 lightyears. It was dis­covered in 1950 by Robert George Har­ring­ton and Albert George Wilson, from the Mount Wilson and Palo­mar Obser­vat­or­ies in Cali­for­nia on plates obtained from the 48-inch Schmidt Tele­scope on Mt. Palomar.

This deep image shows many RR Lyrae and Red Giant Branch type stars of mag 18 to mag 21. North is about 2 o’clock.

[descrip­tion from Wikipedia]


RCOS 14.5″ f/​8
Apo­gee U16M
Astro­don Gen2
LRGB 500:360:220:200 min.
ROSA Remote Obser­vat­or­ies South­ern Alps
© Mar­tin Ruster­holz, Astrophotographer

Find­er Chart Leo II (PGC 34176)

Leo II Galaxy Astrophotography Martin Rusterholz Skychart

Image cre­ated by Skychart

About Me

Hello, my name is Martin Rusterholz. I’m a Swiss amateur astrophotographer living near Zurich, the biggest town in Switzerland. My interest in astronomy started when I was 16. At that time, I built my first Newtonian telescope and mount. I studied physics at the Swiss Federal Institute of Technology (ETH) which was the only study including at least some aspects of astronomy and astrophysics. “Looking at the nights sky is an experience touching everybody deeply inside, something common to all human beings independent to the language spoken by the individuals”. Deep-sky astrophotography is my passion.