Double Cluster in Perseus

Technical Data
Optics Pentax 75
Focal Lenght 500mm
Focal Ratio f/6.7
Exposure Time 50 min (single exp of 10 min)
CCD Canon EOS 350D unmodified
Location Pian dell'Armà (PV, Italian Appennines) at 1350m height
18 november 2006
Mount Kenko NES
Tracking Webcam on a 80mm f/5 refractor
Temperature and humidity T=+4°C, RH=100%
Notes -

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