NGC 7380

Here a 50% version, or 100% version.
NGC 7380 is an emission nebula in Cepheus. It's main color is red, but in the central part there is a blue-purple color. Moreover a small patch, encircling one star in the center, is white-light blue.
This image is a test made with the new Canon 60Da and my usual setup. It needed all the night to collect this exposure.

Technical Data
Optics TEC 140
Focal Length
 1011 mm
Focal Ratio f/7.2
Exposure Time 4h30m (single exp of 10 min)
CCD Canon EOS 60Da (read test in English or Italian)
Sensitivity 800 ISO
Location Colle del Nivolet (AO, Italian Alps) at 2530 m height
Date
 21 July 2012
Mount Gemini G-41
Tracking Lodestar on an 80mm f/5 refractor
Temperature and humidity T= 0°C, RH=80-90%
Sky brightness at zenith (with SQM-L) 21.3-21.4 mag/arcsec^2 (quite bright for the location due to airglow)
Notes North at right.

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