|
|
|
Optics | TEC 140 |
Focal Length |
1011 mm |
Focal Ratio | f/7.2 |
Exposure Time | 7h10m
(single exp of 10 min) |
CCD | Canon
EOS 5D with Baader filter |
Sensitivity | 800 ISO |
Location | Bogli
(PC, Italian Apennines) at 1350 m height |
Date |
27-28 December 2011 |
Mount | Gemini
G-41 |
Tracking | Lodestar
on an 80mm f/5 refractor |
Temperature and humidity | T= -3°C, RH=70% |
Sky brightness at zenith (with SQM-L) | 21.3 mag/arcsec^2 |
Notes | Low noise thanks to a dark sky and cold temperatures. |
|