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Optics | Sigma 180 mm f/3.5 |
Focal Length | 180 mm |
Focal Ratio | f/4 |
Exposure Time | 1h30m
(single exp of 10 min) |
CCD | Canon
EOS 5D with Baader filter |
Sensitivity | 800 ISO |
Location | Tivoli Farm
(Namibia) at 1350 m height |
Date |
29 August 2011 |
Mount | Losmandy G11 |
Tracking | none |
Temperature and humidity | T= +15°C, RH=35% |
Sky brightness at zenith (with SQM-L) | 21.75 mag/arcsec^2 (MW at zenith) |
Notes | This
image is a collaborative effort of the Namibia 2011 expedition.
Processing: Lorenzo Comolli. Images by: Lorenzo Comolli, Luigi Fontana,
Giosuè Ghioldi, Emmanuele Sordini. Thanks to Alessandro Gambaro for loaning us the lens. |
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