Cone nebula (NGC 2264)

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Technical Data
Optics Newton 200 mm (homemade by L. Comolli, F. Riccio e P. Battaglia)
Focal Lenght 1260 mm
Focal Ratio f/6
Corrector Baader MPCC
Exposure Time 2h50m (single exp of 10 min)
CCD Canon EOS 5D with baader filter
Location Bogli (PC, Italian Appennines) at 1350 m height
6 November 2010
Mount Gemini G-41
Tracking Lodestar on an 80mm f/5 refractor
Temperature and humidity T= 7°C, RH=70%
Sky brightness at zenith (with SQM-L) 21.4-21.5 mag/arcsec^2
Notes Great transparency, but very bad seeing and strong wind, so the stars are not pinpoints.
North at left.

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