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- W2156864164 abstract "Multi-Object Spectrographs (MOS) are the major instruments for studying primary galaxies and remote and faintobjects. Current object selection systems are limited and/or difficult to implement in next generation MOS for space andground-based telescopes. A promising solution is the use of MOEMS devices such as micromirror arrays which allowthe remote control of the multi-slit configuration in real time.We are developing a Digital Micromirror Device (DMD) - based spectrograph demonstrator. We want to access thelargest FOV with the highest contrast. The selected component is a DMD chip from Texas Instruments in 2048 x 1080mirrors format, with a pitch of 13.68μm. Such component has been also studied by our team for application inEUCLID-NIS. Our optical design is an all-reflective spectrograph design with F/4 on the DMD component.This demonstrator permits the study of key parameters such as throughput, contrast and ability to remove unwantedsources in the FOV (background, spoiler sources), PSF effect, spectrum stability on the detector. This study will beconducted in the visible with possible extension in the IR. A breadboard on an optical bench has been developed for apreliminary determination of these parameters.The demonstrator on the sky is then of prime importance for characterizing the actual performance of this new family ofinstruments, as well as investigating the operational procedures on astronomical objects. This demonstrator will bestudied in order to be placed on the Telescopio Nazionale Galileo during next year." @default.
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- W2156864164 date "2010-07-16" @default.
- W2156864164 modified "2023-10-18" @default.
- W2156864164 title "DMD-based MOS demonstrator on Galileo Telescope" @default.
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- W2156864164 doi "https://doi.org/10.1117/12.858100" @default.
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