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Precision Integrated-Optics Near-infrared Imaging ExpeRiment

The Precision Integrated-optics Near-infrared Imaging Experiment (PIONIER) is a visiting instrument at the ESO's Paranal Observatory, part of the VLTI astronomical observatory. It combines the light from four telescopes simultaneously and provide 0.002 arc seconds of angular resolution, the equivalent angular resolution of a 100 m telescope. PIONIER has been built at LAOG and has been installed at VLTI in November 2010.

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Precision Integrated-Optics Near-infrared Imaging ExpeRiment

The PIONIER instrument, shown here in the VLTI laboratory at ESO’s Paranal Observatory in Chile, has been used to combine the light from the four 1.8-metre Auxiliary Telescopes for the first time. The distance traversed by the light from the telescopes had to be controlled to an accuracy of about one hundredth of the thickness of a strand of human hair.The arrangement of the four identical optical

ESO B. Lazareff (LAOG) · This media was produced by the European Southern Observatory (ESO), under the identifier ann1081a This tag does not indicate the copyright status of the attached work. A normal copyright tag is still · CC BY 4.0

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The Precision Integrated-optics Near-infrared Imaging Experiment (PIONIER) is a visiting instrument at the ESO's Paranal Observatory, part of the VLTI astronomical observatory. It combines the light from four telescopes simultaneously and provide 0.002 arc seconds of angular resolution, the equivalent angular resolution of a 100 m telescope. PIONIER has been built at LAOG and has been installed at VLTI in November 2010.

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  1. 01Origins and development
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