Messier 35  +  NGC 2158 

Full resolution (1600x1200 px  570kB)

Object data of M35

Object type: open cluster (III 3 r)
Size: 28'
Magnitude: 5.1 mag
Constellation: Gem
Distance: 2,700 Ly

Object data of NGC2158

Object type: open cluster (II 3 r)
Size: 5'
Magnitude: 8.6 mag
Constellation: Gem
Distance: 16,000 Ly
Notes: very old cluster (age > 1 billion years)

Exposure data

Date: 2007-02-09
Location: Schlierbach / Austria (400m)
Telescope: TeleVue NP101 (4" Apo f=540mm)
Camera: ST2000XM with CFW8 + SBIG Filters
  Image type: LRGB
  Binning: L 1x1  /   RGB 1x1
  Exposure time: L 54x2m / R 9x10m / G 9x5m / B 9x5m
Exposure time total:  4h 48m