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Optics | TEC 140 |
Focal Length |
1011 mm |
Focal Ratio | f/7.2 |
Exposure Time | 3 h 40 min
(single exp of 10 min), LRGB 110:30:30:50 min |
CCD | SBIG STL-11000M |
Location | Pian dell'Armà (PV, Italian Apennines) at 1350 m height |
Date |
12 January 2013 |
Mount | Gemini
G-41 |
Tracking | Lodestar
on an 80mm f/5 refractor |
Temperature and humidity | T= -3 °C, RH=50% |
Sky brightness at zenith (with SQM-L) | 21.5 mag/arcsec^2 |
Notes | North at
top. Thanks to Daniele to having pressed me to try this kind of objects and to Gianni for help in the processing. |
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