
Proceedings Paper
Freeform mirror based optical systems for FAMEFormat | Member Price | Non-Member Price |
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Paper Abstract
In this paper we present the design of freeform mirror based optical systems that have the potential to be used in future
astronomical instrumentation in the era of extremely large ground based telescopes. Firstly we describe the optical
requirements followed by a summary of the optimization methodology used to design the freeform surface. The intention
is to create optical architectures, which not only have the numerous advantages of freeform based systems (increased
optical performance and/or reduction of mass and volume), but also can be manufactured and tested with today’s
manufacturing techniques and technologies.
The team plans to build a demonstrator based on one of the optical design examples presented in this paper. The
demonstrator will be built and tested as part of the OPTICON FP7 Freeform Active Mirror Experiment (FAME) project.
A hydroforming technique developed as part of the previous OPTICON FP7 project will be used to produce an accurate,
compact and stable freeform mirror. The manufacturing issues normally experienced in the production of freeform
mirrors are solved through the hydroforming of thin polished substrates, which then will be supported with an active
array structure. The active array will be used to compensate for residual manufacturing errors, thermo-elastic
deformation and gravity-induced errors.
Paper Details
Date Published: 28 July 2014
PDF: 8 pages
Proc. SPIE 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 91512L (28 July 2014); doi: 10.1117/12.2055402
Published in SPIE Proceedings Vol. 9151:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation
Ramón Navarro; Colin R. Cunningham; Allison A. Barto, Editor(s)
PDF: 8 pages
Proc. SPIE 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 91512L (28 July 2014); doi: 10.1117/12.2055402
Show Author Affiliations
Tibor Agócs, NOVA Optical & Infrared Instrumentation Group at ASTRON (Netherlands)
Gabby Kroes, NOVA Optical & Infrared Instrumentation Group at ASTRON (Netherlands)
Lars Venema, ASTRON (Netherlands)
Gabby Kroes, NOVA Optical & Infrared Instrumentation Group at ASTRON (Netherlands)
Lars Venema, ASTRON (Netherlands)
Emmanuel Hugot, Lab. d'Astrophysique de Marseille, CNRS, Aix-Marseille Univ. (France)
Hermine Schnetler, UK Astronomy Technology Ctr. (United Kingdom)
Attila Jaskó, Konkoly Observatory, MTA Research Ctr. for Astronomy and Earth Sciences (Hungary)
Hermine Schnetler, UK Astronomy Technology Ctr. (United Kingdom)
Attila Jaskó, Konkoly Observatory, MTA Research Ctr. for Astronomy and Earth Sciences (Hungary)
Published in SPIE Proceedings Vol. 9151:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation
Ramón Navarro; Colin R. Cunningham; Allison A. Barto, Editor(s)
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