NGC 523 - Arp 158
Andromeda
Penryn, California
November 2007
M 250 @ f9.3 (ST-4, ag)
ST10-XME LRGB 15 minutes each.
NGC 520 is a "Early stage galaxy" disturbed by a possible merger of
small companion galaxies. NGC 523 is a 3x1 arc minute, magnitude 14.4 type Sbc.