Comet C/2007 N3 (Lulin)

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Technical Data
Optics Pentax 75
Focal Lenght 500 mm
Focal Ratio f/6.7
Exposure Time 1h30min (single exp of 10 min)
CCD Canon EOS 5D with baader filter
Location Cosola (AL, Italian Appennines) at 1100 m height
Date
22 Feb 2009
Mount Gemini G-41
Tracking ST4 on a 80mm f/5 refractor
Temperature and humidity T= - 3°C, RH=50%
Sky brightness at zenith (with SQM-L) 21.4 mag/arcsec^2
Notes Tracking and alignment on the comet.


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