Experimental performance of homothetic mapping for wide-field interferometric imaging

Casper van der Avoort; Hedser Van Brug; Jan-Willem den Herder; Luigi L. A. d'Arcio; Rudolf S. Le Poole; Joseph J. M. Braat

doi:10.1117/12.551190

20 October 2004 Experimental performance of homothetic mapping for wide-field interferometric imaging

Casper van der Avoort, Hedser Van Brug, Jan-Willem den Herder, Luigi L. A. d'Arcio, Rudolf S. Le Poole, Joseph J. M. Braat

Author Affiliations +

Proceedings Volume 5491, New Frontiers in Stellar Interferometry; (2004) https://doi.org/10.1117/12.551190
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

Homothetic mapping is an aperture synthesis technique that allows interferometric imaging over a wide field-of-view. A laboratory experiment was set up to demonstrate the feasibility of this technique. Here, we present the first static experiments on homothetic mapping that have been done on the Delft Testbed for Interferometry (DTI). Before a changeable telescope configuration is provided, we first took a fixed telescope configuration and tested the algorithms for their ability to provide an exit pupil configuration before beam combination, that was an exact copy of this telescope configuration. By doing so, we created a homothetic imaging system. This is an imaging system that acts as a masked aperture monolithic telescope, but consists of (in our case) three telescopes of which the light follow their own optical trains.

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Casper van der Avoort, Hedser Van Brug, Jan-Willem den Herder, Luigi L. A. d'Arcio, Rudolf S. Le Poole, and Joseph J. M. Braat "Experimental performance of homothetic mapping for wide-field interferometric imaging", Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); https://doi.org/10.1117/12.551190

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