| Project/Area Number |
24360029
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | National Astronomical Observatory of Japan |
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Principal Investigator |
NISHIKAWA Jun 国立天文台, 光赤外研究部, 助教 (70280568)
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| Co-Investigator(Kenkyū-buntansha) |
KUROKAWA Takashi 東京農工大学, 工学研究院, 名誉教授 (40302913)
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| Co-Investigator(Renkei-kenkyūsha) |
MURAKAMI Naoshi 北海道大学, 工学研究科, 助教 (80450188)
TAMURA Motohide 東京大学, 理学系研究科, 教授 (00260018)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥19,110,000 (Direct Cost: ¥14,700,000、Indirect Cost: ¥4,410,000)
Fiscal Year 2014: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2013: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Fiscal Year 2012: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
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| Keywords | 応用光学・量子光工学 / 超精密計測 / 波面センシング / 補償光学 / ナル干渉計 / 惑星探査 / 系外惑星 / 光学赤外線天文学 / ナリング干渉計 |
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| Outline of Final Research Achievements |
This study aimed at development of high-precision wavefront measurement and control method in the high-contrast optics for direct observations of exoplanets, which consisted of the telescope, the deformable mirror 1, the pre-coronagraph, the deformable mirror 2, the main coronagraph, and the final focal-plane detector. When the mask of the main coronagraph is ejected, the wavefront aberrations of the telescope and the pre-coronagraph can be compensated using the deformable mirror1, and when the mask is inserted, the aberrations of the main coronagraph can be corrected using the deformable mirrors by the dark-hole control with the focal plane detector. The contrast will be improved along the two steps by the architecture suitable for a space telescope with a small number of detectors. We also developed the speckle area nulling (SAN) method which can extinguish wide area quickly without optical model.
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