Evaluation and verification plan for JASMINE telescope optics on the ground

Yoshinori Suematsu; Toshihiro Tsuzuki; Naoki Kohara; Naoki Isobe; Hirokazu Kataza; Shingo Kashima; Ryouhei Kano

doi:10.1117/12.3016887

23 August 2024 Evaluation and verification plan for JASMINE telescope optics on the ground

Yoshinori Suematsu, Toshihiro Tsuzuki, Naoki Kohara, Naoki Isobe, Hirokazu Kataza, Shingo Kashima, Ryouhei Kano

Proceedings Volume 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave; 1309235 (2024) https://doi.org/10.1117/12.3016887
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

JASMINE is a Japanese near-infrared space mission with the scientific objectives of ultra-high-precision astrometric observations of stars in the central region of the Galaxy and exploration of terrestrial exoplanets around M-type stars. To achieve these scientific objectives, we are developing a 36-cm aperture diffraction-limited telescope with an emphasis on ultra-low stable telescope structure. The telescope will be equipped with an infrared detector and a bandpass filter for the wavelength range of 1000-1600 nm. For the astrometry, the telescope will have a high optical performance: the Strehl ratio larger than 0.9 at near-infrared wavelengths and is required to have a stable image distortion of less than a few tens micro arcsec during a low Earth sun-synchronous orbital motion. The telescope has an axisymmetric Korsch-type optical system which is easy to be designed to have the high optical performance over a large field-of-view. We present the progress of the telescope optics design, optics alignment/adjustment procedures, and telescope optics evaluation and verification procedures.

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Yoshinori Suematsu, Toshihiro Tsuzuki, Naoki Kohara, Naoki Isobe, Hirokazu Kataza, Shingo Kashima, and Ryouhei Kano "Evaluation and verification plan for JASMINE telescope optics on the ground", Proc. SPIE 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 1309235 (23 August 2024); https://doi.org/10.1117/12.3016887

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