Rosette nebula, NGC 2244

Click on above image for hires.

Technical Data
Optics Schmidt camera 400/300/615 (Zen optics)
Focal Lenght 615 mm
Focal Ratio f/2,0
Exposure Time Total 3h50min (23x10 min)
Sensor Kaf-6303
Filters H-alpha 6nm Astronomik, selected for f/2
Chip temperature
Location Tradate (VA, in Pianura Padana, Italy) at 300m height
Date and time of exposure start 2 nights, 17 and 18 February 2009
Mount Astrosystems Fork
Tracking Webcam Vesta Pro B/W on Pentax 75 refractor
Temperature and humidity T=0 °C, RH=80 %
Sky brightness at zenith (with SQM-L)18.5 - 19.0 mag/arcsec^2
Notes -

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