Markarian's Chain of Galaxies
 
Date:
 
May 2-9, 2016
 
Location:
 
Landers, California USA
 
Telescope:
 
Explore Scientific ED127 Apo
 
Camera:
 
SBIG STF-8300M
 
Mount:
 
Astro-Physics Mach1GTO
 
Acquisition:
 
Maxim DL Pro 6
 
Filters:
 
Baader LRGB
 
Total Integration:
 
6.67 hours
 
Calibration:
 
Darks: 30ea
Bias: 30ea
Flats: 30ea
 
Subexposures:
 
L: 25 x 600s (1x1)
R: 10 x 300s (2x2)
G: 10x 300s (2x2)
B: 10 x 300s (2x2)
 
Markarian's Chain is a stretch of galaxies that forms part of the Virgo Cluster. It is called a chain because, when viewed from Earth, the galaxies lie along a smoothly curved line. It was named after the Armenian astrophysicist, B. E. Markarian, who discovered their common motion in the early 1960s.

Member galaxies include M84 (NGC 4374), M86 (NGC 4406), NGC 4477, NGC 4473, NGC 4461, NGC 4458, NGC 4438 and NGC 4435.

At least seven galaxies in the chain appear to move coherently, although others appear to be superposed by chance