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Dispersing elements for astronomy: new trends and possibilities (Conference Presentation)
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Paper Abstract

From the ultraviolet to the infrared, modern astronomical spectrographs are workhorse instruments at any wide-purpose observatory, enabling both follow-up and survey science across all fields of astrophysics and astronomy. As the critical optical element of determining the performance of any spectrograph, the key parameters of the dispersing element —resolution, throughput, bandwidth, and dispersion — must all be optimized for highest performance of the instrument. There are a growing number of alternatives in the domain of diffraction gratings and dispersing elements thanks to the development of new technologies (from holography to lithography and micromachining). Some of these technologies are not specifically developed for astronomy, but have exciting potential applications in this field. In order to make the best design choices for new instrumentation, it is necessary to understand the advantages and the limitations of each technology. Although many of the new developments will naturally focus on instrumentation for the new generation of Extremely Large Telescopes, any new developments will leverage the scientific impact of the small and medium facilities as well. In this talk, the outcomes of a dedicated workshop organized in October 2017 will be reported. The goals of that workshop were to bringing together scientists and engineers involved in the design and construction of spectrographs with our commercial partners who help produce and develop the necessary technology.

Paper Details

Date Published: 10 July 2018
Proc. SPIE 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III, 1070622 (10 July 2018); doi: 10.1117/12.2311704
Show Author Affiliations
Andrea Bianco, INAF - Osservatorio Astronomico di Brera (Italy)
Rebecca Bernstein, Carnegie Observatories (United States)
Antonio de Ugarte Postigo, Instituto de Astrofísica de Andalucía - CSIC (Spain)
Francisco Garzón, Instituto de Astrofísica de Canarias (Spain)
Wayne Holland, UK Astronomy Technology Ctr., Science & Technology Facilities Council (United Kingdom)
Antonio Manescau, European Southern Observatory (Germany)
Ramón Navarro, ASTRON (Netherlands)
Marco Riva, INAF - Osservatorio Astronomico di Brera (Italy)

Published in SPIE Proceedings Vol. 10706:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III
Ramón Navarro; Roland Geyl, Editor(s)

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