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Optics | Pentax 75 apo refractor |
Focal Length | 500 mm |
Focal Ratio | f/6.7 |
Exposure Time | 3 h 10 min
(single exp of 10 min) |
CCD | Canon
EOS 5D with Baader filter |
Sensitivity | 800 ISO |
Location | Tivoli Farm
(Namibia) at 1350 m height |
Date |
2 September 2011 |
Mount | Kenko NES |
Tracking | Lodestar with a small refractor (F.L. 100 mm, aperture 23 mm) |
Temperature and humidity | T= +5°C, RH=28% |
Sky brightness at zenith (with SQM-L) | 21.3-21.8 mag/arcsec^2 (Moon disturbance) |
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. |
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