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.
See also Lists of telescopes
References
External links ipag.osug.fr/twiki/bin/view/Ipag/Projets/Pionier/WebHome IPAG (Grenoble) - PIONIER project home http://www.osug.fr OSUG Grenoble – PIONIER instrument www.eso.org/sci/facilities/paranal/instruments/pionier.html ESO PIONIER – instrument description www.eso.org/sci/facilities/paranal/telescopes/vlti/index.html ESO VLTI – about the interferometer at the VLT