Seeing is Believing: New Facts about the Evolution of Seeing on Paranal

Details Seeing is Believing: New Facts about the Evolution of Seeing on Paranal Seeing is Believing: New Facts about the Evolution of Seeing on Paranal

Jun 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008msngr.132...11s&link_type=abstract

The Messenger, vol. 132, p. 11-17

Physics

13

Scientific paper

Since the commissioning of the VLT it has been known that the image quality delivered by the telescopes is better, and often much better, than predicted by the seeing monitor. The advent of new sensitive instruments to measure the optical turbulence profile of the atmosphere over Paranal has finally allowed us to understand the origin of this discrepancy: the presence of a highly turbulent layer so close to the ground that it is seen by the seeing monitor, but not by the VLT unit telescopes. In this article we tell the story of this elusive surface layer.

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