Astroclimatology of ESO Sites
ESO WIDE REVIEW
M. Sarazin, April 2000, 2/10
|CLOUDINESS - SHORT TERM|
Statistics of photometric nights at Paranal (red, 75%) and La Silla (blue, 76%) since UT1 first light,
including downtime for humidity. Data is extracted from the telescope observing logs when available,
otherwise from the DIMM photometric database (Feb99-Jun99).
The dashed lines give the respective
long term (83-now) sites characteristics (Paranal: 78%, LaSilla: 61%).