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Optics | TEC 140 |
Focal Length |
1011 mm |
Focal Ratio | f/7.2 |
Exposure Time | 8 h 20 min
(single exp of 10 min), LRGB 240:80:70:110 min |
CCD | SBIG STL-11000M @-40°C |
Location | Pian dell'Armà (PV, Italian Apennines) at 1350 m height |
Date |
8-9 February 2013 (two nights) |
Mount | Gemini
G-41 |
Tracking | Lodestar
on an 80mm f/5 refractor |
Temperature and humidity | T= -13 °C, RH=50% |
Sky brightness at zenith (with SQM-L) | 21.3-21.4 mag/arcsec^2 |
Notes | North at
top. Labels from Perseus software. |
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