Astroclimatology of La Silla
General Observing Conditions and Data for La Silla
- Seeing.
- Atmospheric Extinction Coefficients at La Silla (from Geneva Observatory)
- Differential atmospheric refraction
- Sky Brightness (V and NIR)
Precipitable Water Vapour and localRelative Humidity
Wind, Air Temperature, Dew Point and Relative Humidity Statistics, 2002 to 2006 (pdf) andseasonal, 1999 to 2007 (pdf)
Cloudiness Monthly Average since 1983, differential Paranal-La Silla , Seasonal
Wind Velocity Distribution at ground level (Oct89-Jun91) and at the tropopause level Yesterday, Today and Tomorrow
Real Time Astroclimate
Tonight's Sky Transparency and archives
Next 36 hour Weather Forecasts
Further Info
TheLa Silla Astronomical Site Monitor (ASM)
Environmental Conditions at ESO Observatories (Trimestrial Reports,discontinued in 1999)
An analysis of the relationship of El-Nino to the cloud cover at ESO observatories, The ESO Messenger 90, December 97 ( ps file )