Numerically designed phase-mask for stellar coronagraph

• 馬場, 直志

• 村上, 尚史

• 三浦, 則明

• 田村, 元秀

抄録

Phase-mask coronagraph holds the ability to detect exoplanets very close to their parent star. We report a new kind of phase mask that performs the contrast ratio of more than the tenth power of 10 for a circular aperture with shades of a secondary mirror and spiders. The phase distribution of the phase mask is numerically obtained by making the leaked light distribute outside the transparent part of the pupil. We applied the hybrid input-output algorithm, one of phase retrieval methods, to find the phase distribution of the phase mask. We show the characteristics of thus obtained phase mask.

Conference Title : Techniques and Instrumentation for Detection of Exoplanets VII

Conference Chair : Stuart Shaklan

Place : San Diego, California, United States

Date : August 09, 2015

収録刊行物

• Proceedings of SPIE - the International Society for Optical Engineering

  Proceedings of SPIE - the International Society for Optical Engineering 9605 2015

  Society of Photo-optical Instrumentation Engineers

キーワード

• stellar coronagraph
• high-contrast imaging
• phase mask
• exoplanet
• telescope
• phase retrieval

詳細情報

• CRID: 1050574047083895680
• NII論文ID: 120006671845
• NII書誌ID: AA10619755
• HANDLE: 10258/3841
• ISSN: 0277786X
• Web Site: https://muroran-it.repo.nii.ac.jp/records/8569
• 本文言語コード: en
• 資料種別: conference paper
• データソース種別:
  • IRDB
  • CiNii Articles