the VLT control building. The combination of the large detector array and the short and frequent exposures necessary at infrared wavelengths results in a high data rate of 200–300 GB per night. A quick-look reduction at the Paranal Observatory will be used for daily quality control, but the principal data flow is to transfer the raw data to ESO headquarters in Garching near Munich, Germany, for ingestion into the data archive. Users can extract paw prints (see above) and pass them through a calibration pipeline to remove instrumental artefacts and calibrate the astrometry and photometry. The archive data will also be copied to the VISTA Data Flow System in the UK, where the paw prints will be combined into tiles (see above) and where source catalogues will be prepared from these. See also List of largest infrared telescopes VLT Survey Telescope Very Large Telescope European Southern Observatory Notes and references Further reading "The ESO survey telescopes". European Southern Observatory. Retrieved 23 September 2009. "VISTA – Visible and Infrared Survey Telescope for Astronomy". European Southern Observatory. Retrieved 23 September 2009. "VISTA: Pioneering new survey telescope starts work". ESO Press Release 49/09, 11 December 2009. Retrieved 11 December 2009. Includes a number of pictures of or taken by the telescope. External links VISTA web site VISTA pages at the UK Astronomy Technology Centre ESO VISTA page European Southern Observatory Science and Technology Facilities Council Astronomical observatories in Chile Infrared telescopes