Wavefront sensor for millimeter/submillimeter-wave adaptive optics based on aperture-plane interferometry

Yoichi Tamura; Ryohei Kawabe; Yuhei Fukasaku; Kimihiro Kimura; Tetsutaro Ueda; Akio Taniguchi; Nozomi Okada; Hideo Ogawa; Ikumi Hashimoto; Tetsuhiro Minamidani; Noriyuki Kawaguchi; Nario Kuno; Yohei Togami; Masato Hagimoto; Satoya Nakano; Keiichi Matsuda; Sachiko Okumura; Tomoko Nakamura; Mikio Kurita; Tatsuya Takekoshi; Tai Oshima; Toshikazu Onishi; Kotaro Kohno

doi:10.1117/12.2561885

13 December 2020 Wavefront sensor for millimeter/submillimeter-wave adaptive optics based on aperture-plane interferometry

Yoichi Tamura, Ryohei Kawabe, Yuhei Fukasaku, Kimihiro Kimura, Tetsutaro Ueda, Akio Taniguchi, Nozomi Okada, Hideo Ogawa, Ikumi Hashimoto, Tetsuhiro Minamidani, Noriyuki Kawaguchi, Nario Kuno, Yohei Togami, Masato Hagimoto, Satoya Nakano, Keiichi Matsuda, Sachiko Okumura, Tomoko Nakamura, Mikio Kurita, Tatsuya Takekoshi, Tai Oshima, Toshikazu Onishi, Kotaro Kohno

Author Affiliations +

Proceedings Volume 11445, Ground-based and Airborne Telescopes VIII; 114451N (2020) https://doi.org/10.1117/12.2561885
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

We present a concept of a millimeter wavefront sensor that allows real-time sensing of the surface of a groundbased millimeter/submillimeter telescope. It is becoming important for ground-based millimeter/submillimeter astronomy to make telescopes larger with keeping their surface accurate. To establish `millimetric adaptive optics (MAO)' that instantaneously corrects the wavefront degradation induced by deformation of telescope optics, our wavefront sensor based on radio interferometry measures changes in excess path lengths from characteristic positions on the primary mirror surface to the focal plane. This plays a fundamental role in planed 50-m class submillimeter telescopes such as LST and AtLAST.

Conference Presentation

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Yoichi Tamura, Ryohei Kawabe, Yuhei Fukasaku, Kimihiro Kimura, Tetsutaro Ueda, Akio Taniguchi, Nozomi Okada, Hideo Ogawa, Ikumi Hashimoto, Tetsuhiro Minamidani, Noriyuki Kawaguchi, Nario Kuno, Yohei Togami, Masato Hagimoto, Satoya Nakano, Keiichi Matsuda, Sachiko Okumura, Tomoko Nakamura, Mikio Kurita, Tatsuya Takekoshi, Tai Oshima, Toshikazu Onishi, and Kotaro Kohno "Wavefront sensor for millimeter/submillimeter-wave adaptive optics based on aperture-plane interferometry", Proc. SPIE 11445, Ground-based and Airborne Telescopes VIII, 114451N (13 December 2020); https://doi.org/10.1117/12.2561885

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