20 October 2004 Star separator system for the dual-field capability (PRIMA) of the VLTI
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Abstract
In the framework of the Phase-Referenced Imaging and Micro-arcsecond Astrometry facility (PRIMA) developed for the Very Large Telescope Interferometer (VLTI), a sophisticated opto-mechanical system has been developed by TNO-TPD. It will be placed at the Coudé focus of the telescopes and will allow picking up two stars anywhere in a 2 arcmin field-of-view and collimating their light into two beams that will propagate through the rest of the interferometer toward the instrument. These Star Separator systems have a very high optical quality, fast and accurate pointing and chopping, independent high speed remote control of the beam tip-tilt and of the pupil position. They are very rigid, accurate mechanical systems non-sensitive to temperature variations The Star Separator systems are described in this paper.
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Francoise Delplancke, Jan Nijenhuis, Harry de Man, Luigi Andolfato, Rainer Treichel, Jan Hopman, Frederic Derie, "Star separator system for the dual-field capability (PRIMA) of the VLTI", Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); doi: 10.1117/12.551873; https://doi.org/10.1117/12.551873
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