Snake dark nebula - B78

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Technical Data
Optics Pentax 75
Focal Lenght 500mm
Focal Ratio f/6.7
Exposure Time 2h50min (single exp of 10 min)
CCD Canon EOS 350D unmodified
Location Bogli (PC, Italian Appennines) at 1350 m height
2 May 2008
Mount Gemini G-41
Tracking ST4 on a 80mm f/5 refractor
Temperature and humidity T=+5°C, RH=75%
Sky brightness at zenith (with SQM-L)21.3 mag/arcsec^2
Notes -

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