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Optics | Pentax 75 apo
refractor |
Focal Lenght | 500 mm |
Focal Ratio | f/6.7 |
Exposure Time | 1 h (single
exp of 10 min) |
CCD | Canon EOS 5D
with Baader filter |
Sensitivity | 800 ISO |
Location | Tivoli Farm (Namibia) at 1350 m height |
Date |
25 August 2011 |
Mount | Kenko NES |
Tracking | Lodestar at
100 mm focal length |
Temperature and humidity | T= 0°C,
RH=61% |
Sky brightness at zenith (with SQM-L) | 21.6 mag/arcsec^2 (Moon in the sky) |
Notes | This cluster was imaged as a filler because the last part of the night was penalized by a bright Moon in the sky. 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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