14 October 2005 PRIMA FSU: a fringe sensor unit for the VLTI
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Abstract
The capability to perform Phased-Reference Imaging and Narrow-Angle Astrometry with the VLTI will be given by the PRIMA instrument, which is based on the simultaneous observation of two celestial objects separated by 2 to 60 arcsec. PRIMA facility will allow VLTI instruments like MIDI and AMBER to observe objects with magnitude fainter than in single field mode. PRIMA astrometric camera will allow to measure relative angular positions of stars with 10 uas accuracy. This paper reviews the concept and the implementation of the Fringe Sensor Unit, the PRIMA fringe sensor/astrometric instrument, which is currently under integration/test at Alenia Spazio.
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Sergio Mottini, Sergio Mottini, Stefano Cesare, Stefano Cesare, Gianalfredo Nicolini, Gianalfredo Nicolini, } "PRIMA FSU: a fringe sensor unit for the VLTI", Proc. SPIE 5962, Optical Design and Engineering II, 596222 (14 October 2005); doi: 10.1117/12.624753; https://doi.org/10.1117/12.624753
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