Wavefront sensor for millimeter/submillimeter-wave adaptive optics based on aperture-plane interferometry
Abstract
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.
Cite
@article{arxiv.2102.09286,
title = {Wavefront sensor for millimeter/submillimeter-wave adaptive optics based on aperture-plane interferometry},
author = {Yoichi Tamura and Ryohei Kawabe and Yuhei Fukasaku and Kimihiro Kimura and Tetsutaro Ueda and Akio Taniguchi and Nozomi Okada and Hideo Ogawa and Ikumi Hashimoto and Tetsuhiro Minamidani and Noriyuki Kawaguchi and Nario Kuno and Yohei Togami and Masato Hagimoto and Satoya Nakano and Keiichi Matsuda and Sachiko Okumura and Tomoko Nakamura and Mikio Kurita and Tatsuya Takekoshi and Tai Oshima and Toshikazu Onishi and Kotaro Kohno},
journal= {arXiv preprint arXiv:2102.09286},
year = {2021}
}
Comments
9 pages, 5 figures. Published in SPIE Proc