Implementation of the 36 μm machined image slicer integral field unit for DKIST/DL-NIRSP

Tetsu Anan; Sarah Jaeggli; Haosheng Lin; Thomas Schad; Maxim Kramar; Friedrich Wöger; Stacey Sueoka; Luke Johnson; Isabelle Scholl; Morgan Bonnet

doi:10.1117/12.3019649

18 July 2024 Implementation of the 36 μm machined image slicer integral field unit for DKIST/DL-NIRSP

Tetsu Anan, Sarah Jaeggli, Haosheng Lin, Thomas Schad, Maxim Kramar, Friedrich Wöger, Stacey Sueoka, Luke Johnson, Isabelle Scholl, Morgan Bonnet

Author Affiliations +

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 1309626 (2024) https://doi.org/10.1117/12.3019649
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

The Diffraction-Limited Near Infrared Spectropolarimeter (DL-NIRSP) is a facility instrument of the U.S. National Science Foundation’s Daniel K. Inouye Solar Telescope (DKIST). DL-NIRSP was originally commissioned with a birefringent fiber optic image slicer for high resolution observations of the solar atmosphere to support contiguous 2D-spatial, spectral, and polarimetric measurements in three channels between 500 and 1800 nm with very high spectral resolution over narrow bandpasses. During commissioning, we found temporal variations of the flat field and other fiber-related issues limited instrument performance. To resolve these various problems, we replaced the existing fiber-based image slicer with the high resolution Machined Image Slicer Integral Field Unit with 36 micrometer wide slicer mirrors (MISI-36). We report on the implementation and optical testing of MISI-36.

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Tetsu Anan, Sarah Jaeggli, Haosheng Lin, Thomas Schad, Maxim Kramar, Friedrich Wöger, Stacey Sueoka, Luke Johnson, Isabelle Scholl, and Morgan Bonnet "Implementation of the 36 μm machined image slicer integral field unit for DKIST/DL-NIRSP", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 1309626 (18 July 2024); https://doi.org/10.1117/12.3019649

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