Abell 779

Full resolution (1600x1200 px  450kB)

150% resolution (720kB)

Object identification (450kB)

300% zoom on quasar z=3.91

Object data of Abell779

Object type: galaxy cluster
Size: 90'
Constellation: Lyn
Distance: 300 Mio Ly

The brightest member of Abell779 is NGC2832, a giant elliptical galaxy near the center of the galaxy cluster. NGC2832 builds a galaxy group with NGC2830 and NGC2831 (Arp315 = Holmberg123).

The above image shows also the very distant quasar QSO J091830.41+334824.4, which shows a redshift z=3.91 and a brightness in green of 21.7 mag (see object identification and the 300% zoom image). The light of this quasar had to travel for 12 billion years to reach earth.

Exposure data

Date: 2009-04-14 + 15 + 18 + 20
Location: Nussbach / Austria (400m)
Telescope: 12" Newtonian telescope (f=1120mm)
Camera: ST2000XM with CFW8 and SBIG Filters
Binning: L 1x1 / RGB 2x2
Exposure time: L 34x12m / R 13x12m / G 13x6m / B 13x6m
Exposure time total: 12h 00m