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Proceedings Paper

AGP (Astrometric Gravitation Probe) optical design report
Author(s): Alberto Riva; Mario Gai; Federico Landini; Paolo Lazzarini; Daniele Gallieni; Matteo Tintori; Alberto Anselmi; Stefano Cesare; Deborah Busonero; Mario Gilberto Lattanzi; Alberto Vecchiato
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Paper Abstract

This paper describes the current opto-mechanical design of AGP, a mission designed for astrometric verification of General Relativity (GR) and competing gravitation theories by means of precise determination of light deflection on field stars, and of orbital parameters of selected Solar System objects. The optical concept includes a planar rear-view mirror for simultaneous imaging on the CCD mosaic detector of fields of view also from the direction opposite to the Sun, affected by negligible deflection, for the sake of real time calibration. The precision of astrometric measurements on individual stars will be of order of 1 mas, over two fields separated by few degrees around the Sun and observed simultaneously. We describe the optical design characteristics, with particular reference to manufacturing and tolerancing aspects, evidencing the preservation of very good imaging performance over the range of expected operating conditions.

Paper Details

Date Published: 4 August 2016
PDF: 11 pages
Proc. SPIE 9907, Optical and Infrared Interferometry and Imaging V, 990742 (4 August 2016); doi: 10.1117/12.2232769
Show Author Affiliations
Alberto Riva, INAF - Osservatorio Astrofisico di Torino (Italy)
Mario Gai, INAF - Osservatorio Astrofisico di Torino (Italy)
Federico Landini, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Paolo Lazzarini, A.D.S. International Srl (Italy)
Daniele Gallieni, A.D.S. International Srl (Italy)
Matteo Tintori, A.D.S. International Srl (Italy)
Alberto Anselmi, Thales Alenia Space Italia S.p.A. (Italy)
Stefano Cesare, Thales Alenia Space Italia S.p.A. (Italy)
Deborah Busonero, INAF - Osservatorio Astrofisico di Torino (Italy)
Mario Gilberto Lattanzi, INAF - Osservatorio Astrofisico di Torino (Italy)
Alberto Vecchiato, INAF - Osservatorio Astrofisico di Torino (Italy)


Published in SPIE Proceedings Vol. 9907:
Optical and Infrared Interferometry and Imaging V
Fabien Malbet; Michelle J. Creech-Eakman; Peter G. Tuthill, Editor(s)

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