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
Date
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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