Wavefront sensor for millimeter/submillimeter-wave adaptive optics based on aperture-plane interferometry
We present a concept of a millimeter wavefront sensor that allows real-time sensing of the surface of a ground-based millimeter/submillimeter telescope. It is becoming important for ground-based millimeter/submillimeter astronomy to make telescopes larger with keeping their surface accurate. To esta...
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| creator | Tamura, Yoichi Kawabe, Ryohei Fukasaku, Yuhei Kimura, Kimihiro Ueda, Tetsutaro Taniguchi, Akio Okada, Nozomi Ogawa, Hideo Hashimoto, Ikumi Minamidani, Tetsuhiro Kawaguchi, Noriyuki Kuno, Nario Togami, Yohei Hagimoto, Masato Nakano, Satoya Matsuda, Keiichi Okumura, Sachiko Nakamura, Tomoko Kurita, Mikio Takekoshi, Tatsuya Oshima, Tai Onishi, Toshikazu Kohno, Kotaro |
| description | We present a concept of a millimeter wavefront sensor that allows real-time sensing of the surface of a ground-based 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 planned 50-m class submillimeter telescopes such as LST and AtLAST. |
| doi_str_mv | 10.48550/arxiv.2102.09286 |
| format | Article |
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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. 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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 planned 50-m class submillimeter telescopes such as LST and AtLAST.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><doi>10.48550/arxiv.2102.09286</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Adaptive optics Astronomy Focal plane Interferometry Physics - Instrumentation and Methods for Astrophysics Primary mirrors Sensors Submillimeter waves Telescopes Wave front sensors Wave fronts |
| title | Wavefront sensor for millimeter/submillimeter-wave adaptive optics based on aperture-plane interferometry |
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