VLTI Delay Line - 2

The VLTI Delay Line retroreflector carriage moving along its rails in the Interferometric Tunnel. The Delay Line is a mechanical-optical system that compensates the optical path differences of the light beams from the individual telescopes. Such a system is necessary to ensure that the light from all telescopes arrives in the same phase at the focal point of the interferometer. Otherwise, the light cannot be successfully combined interferometrically.

Credit:

ESO

About the Video

Id:delayline20082
Release date:4 December 2009, 00:17
Duration:18s

About the Object

Type:• X - Paranal

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