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2 November 2017 Simulation algorithm to model the visible tunable filter for the Daniel K. Inouye Solar Telescope
Matthias Schubert, Thomas Kentischer, Oskar von der Lühe
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Journal of Astronomical Telescopes, Instruments, and Systems, Vol. 3, Issue 4, 045002 (November 2017). https://doi.org/10.1117/1.JATIS.3.4.045002
Abstract
The visible tunable filter is an imaging spectropolarimeter for solar observations in visible light. The instrument consists of several Fabry–Pérot interferometers (FPIs), a polarization modulator, and a prefilter. It will be one of the first light instruments for the Daniel K. Inouye Solar Telescope (DKIST) on Haleakaláa, Maui, Hawaii. We have developed simulation algorithms to describe the instrument and its impact on scientific observations. Our aim is to study the expected measurement accuracy and to test calibration algorithms. A well-known problem is the surface quality of the glass plates for each FPI. We developed algorithms to describe the influence of a surface microroughness, reflectivity, and figure errors of the individual FPI plates, and the expected total photon flux for scientific data acquisition. This tool is used to derive the limits for manufacturing processes to achieve the measurement accuracy required for science observations with DKIST.
CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
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Matthias Schubert, Thomas Kentischer, and Oskar von der Lühe "Simulation algorithm to model the visible tunable filter for the Daniel K. Inouye Solar Telescope," Journal of Astronomical Telescopes, Instruments, and Systems 3(4), 045002 (2 November 2017). https://doi.org/10.1117/1.JATIS.3.4.045002
Received: 13 April 2017; Accepted: 3 October 2017; Published: 2 November 2017
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Cited by 2 scholarly publications.
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KEYWORDS
Computer simulations
Reflectivity
Fabry–Perot interferometers
Device simulation
Tunable filters
Algorithm development
Magnetism
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