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| Optics | TEC 140 |
| Focal Lenght | 1011 mm |
| Focal Ratio | f/7.2 |
| Exposure Time | 1h20m
(single
exp of 10 min) |
| CCD | Canon
EOS 5D
with baader filter |
| Sensitivity | 800 ISO |
| Location | Colle
dell'Agnello (CN,
Italian Alps) at 2700 m height |
| Date |
1 August
2011 |
| Mount | Gemini
G-41 |
| Tracking | Lodestar
on
an 80mm
f/5 refractor |
| Temperature and humidity | T=
+8°C,
RH=76% |
| Sky brightness at zenith (with SQM-L) | 21.6 mag/arcsec^2 |
| Notes | First light of TEC 140 under a dark sky |
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