Messier 9   +   Barnard 64

Full resolution (1600x1200 px  570kB)

Co-operation with 18" Newton (Lum) and 4" Apo (RGB)

Object data of M9

Object type: globular cluster (VIII)
Size: 5.5'
Magnitude: 7.7 mag
Constellation: Oph
Distance: 26,000 Ly
Notes: dark nebula B64 (=LDN173+LDN175) at east side

Exposure data

Date: 2007-06-14 + 19
Location: Nussbach / Austria (400m)
Telescope: TeleVue NP101 (4" Apo f=540mm)
Camera: ST2000XM with CFW8 and SBIG Filters
  Binning: L 1x1 / RGB 1x1
  Exposure time: L 40x3m / R 9x12m / G 9x6m / B 9x6m
Exposure time total: 5h 36m