High-precision optical metrology for Darwin: design and performance

Bertrand Calvel; Isabel Cabeza; Alexandre Cabral; Eberhard Manske; José Rebordão; Rainer Sesselmann; Zoran Sodnik; Ad Verlaan

doi:10.1117/12.2500126

13 April 2018 High-precision optical metrology for Darwin: design and performance

Bertrand Calvel, Isabel Cabeza, Alexandre Cabral, Eberhard Manske, José Rebordão, Rainer Sesselmann, Zoran Sodnik, Ad Verlaan

Author Affiliations +

Proceedings Volume 10568, International Conference on Space Optics — ICSO 2004; 105682N (2018) https://doi.org/10.1117/12.2500126
Event: International Conference on Space Optics 2004, 2004, Toulouse, France

Abstract

The ESA DARWIN project uses a set of telescopes based on free flying satellites and operated as an aperture synthesis system. The relative position of all these satellites has to be maintained with a very high accuracy. This is only possible with the help of a very high precision metrology system. We present here in a first part the requirements for the optical metrology of DARWIN and the proposed definition of the metrology systems needed to answer these requirements. In the second part we present the design of the various systems. Eventually we give the results of the performance tests of breadboards that have been manufactured in the framework of the ESA study "High Precision Optical Metrology" to validate these designs.

Citation Download Citation

Bertrand Calvel, Isabel Cabeza, Alexandre Cabral, Eberhard Manske, José Rebordão, Rainer Sesselmann, Zoran Sodnik, and Ad Verlaan "High-precision optical metrology for Darwin: design and performance", Proc. SPIE 10568, International Conference on Space Optics — ICSO 2004, 105682N (13 April 2018); https://doi.org/10.1117/12.2500126

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