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Low-contrast pre-coronagraph for extra contrast of dark-hole

Published online by Cambridge University Press:  27 October 2016

Jun Nishikawa ,
Masahito Oya ,
Naoshi Murakami ,
Motohide Tamura ,
Takashi Kurokawa ,
Yosuke Tanaka  and
Takayuki Kotani
Jun Nishikawa
Affiliation:
National Astronomical Observatory of Japan, Extrasolar Planet Detection Project Office, 2-21-1 Osawa, Mitaka, Tokyo, Japan, 181-8588 email: jun.nishikawa@nao.ac.jp SOKENDAI (Graduate University for Advanced Studies), Faculty of Physical Sciences, 2-21-1 Osawa, Mitaka, Tokyo, Japan, 181-8588 National Institute of Natural Sciences, Astrobiology Center, 2-21-1 Osawa, Mitaka, Tokyo, Japan, 181-8588
Masahito Oya
Affiliation:
National Astronomical Observatory of Japan, Extrasolar Planet Detection Project Office, 2-21-1 Osawa, Mitaka, Tokyo, Japan, 181-8588 email: jun.nishikawa@nao.ac.jp Nihon University, Graduate School of Physics, Surugadai 1-8-14, Chiyoda, Tokyo, Japan, 101-8308
Naoshi Murakami
Affiliation:
Hokkaido University, Fuculty of Engineering, Kita 13 Nishi 8, Kita-Ku, Sapporo, Hokkaido, Japan, 060-8628
Motohide Tamura
Affiliation:
National Astronomical Observatory of Japan, Extrasolar Planet Detection Project Office, 2-21-1 Osawa, Mitaka, Tokyo, Japan, 181-8588 email: jun.nishikawa@nao.ac.jp National Institute of Natural Sciences, Astrobiology Center, 2-21-1 Osawa, Mitaka, Tokyo, Japan, 181-8588 The University of Tokyo, Graduate School of Science, Department of Astronomy, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan, 113-0033
Takashi Kurokawa
Affiliation:
National Astronomical Observatory of Japan, Extrasolar Planet Detection Project Office, 2-21-1 Osawa, Mitaka, Tokyo, Japan, 181-8588 email: jun.nishikawa@nao.ac.jp Tokyo University of Agriculture and Technology, Graduate School of Engineering, Koganei, Tokyo, Japan, 184-8588
Yosuke Tanaka
Affiliation:
Tokyo University of Agriculture and Technology, Graduate School of Engineering, Koganei, Tokyo, Japan, 184-8588
Takayuki Kotani
Affiliation:
National Astronomical Observatory of Japan, Extrasolar Planet Detection Project Office, 2-21-1 Osawa, Mitaka, Tokyo, Japan, 181-8588 email: jun.nishikawa@nao.ac.jp National Institute of Natural Sciences, Astrobiology Center, 2-21-1 Osawa, Mitaka, Tokyo, Japan, 181-8588
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Abstract

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We propose a low-contrast pre-coronagraph that can provide additional dark-hole contrast to a main coronagraph.

Keywords

instrumentation: adaptive opticstechniques: interferometric
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , General Assembly A29A: Astronomy in Focus , August 2015 , pp. 213
Copyright
Copyright © International Astronomical Union 2016 

References

Nishikawa, J., Abe, L., Murakami, M., & Kotani, T. 2008, A&A, 489, 1389 Google Scholar
Kobayashi, T., Nishikawa, J., Tanaka, Y., Kurokawa, T., Kashiwagi, K., Murakmai, N., Baba, N., & Hashimoto, N. 2012, Proc. SPIE, 8421, 84213D Google Scholar