NGC 7000 - North America nebula: color + H-alpha

Click on above image for hires.
See also a H-alpha only version with a larger field.

Technical Data - COLOR
Optics Pentax 75
Focal Lenght 500mm
Focal Ratio f/6.7
Exposure Time 1h40min (single exp of 10 min)
CCD Canon EOS 5D with baader filter
Location Colle del Nivolet (AO, Italian Alps) at 2535m height
26 september 2008
Mount Gemini G-41
Tracking ST4 on a 80mm f/5 refractor
Temperature and humidity T=-4°C, RH=80%
Sky brightness at zenith (with SQM-L) 21.4 mag/arcsec^2
Notes -

Technical Data - H-ALPHA (crop of the central part of the mosaic)
Optics Schmidt camera 400/300/615 (Zen optics)
Focal Lenght 615 mm
Focal Ratio f/2,0
Exposure Time Total 29 hours. Mosaic of 6 frames plus the central region. 348 frames of 5 min each.
CCD A camera with Kaf-6303e
Sensor Kaf-6303e class 1
Filters H-alpha 6nm Astronomik, selected for f/2
Chip temperature
-30 °C and -20 °C
Location Tradate (VA, in Pianura Padana, Italy) at 300m height
Date and time of exposure start 9 full nights: 23, 28, 29 june and 4, 5, 6, 7, 17, 18 july 2007
Mount Astrosystems Fork
Tracking Webcam Vesta Pro B/W on a 120mm f/13 refractor
Temperature and humidity T=between 13 and 25 °C, RH=between 40 and 70%
Sky brightness at zenith (with SQM-L)18.5 - 19.0 mag/arcsec^2
Notes The first attempt to compose a mosaic with the Schmidt camera

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