中国科学院机构知识库网格系统: 检索

A high-contrast imaging coronagraph for segmented-mirror large aperture telescopes using a spatial light modulator 期刊论文 OAI收割
Astronomical Techniques and Instruments, 2024, 卷号: 1, 期号: 3, 页码: 166-170
作者: Dou JP(窦江培)

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收藏 | 浏览/下载：1/0 | 提交时间：2025/12/31

Liquid crystal spatial light modulator Amplitude apodized pupil Large aperture telescopes

Imaging quality evaluation method for large field-of-view telescope optical systems 期刊论文 OAI收割
Journal of Astronomical Telescopes, Instruments, and Systems, 2024, 卷号: 10, 期号: 2, 页码: 025003-1-17
作者: Chen C(陈超); Li ZY(李正阳); Wu ZX(吴之旭); Zhang YM(张一鸣); Yuan XY(袁祥岩)

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收藏 | 浏览/下载：2/0 | 提交时间：2025/12/29

optical telescopes imaging shape large FoV evaluation method

Research on Control Strategy of Hamiltonian Theory for Large Telescope Based on SAPMSM 期刊论文 OAI收割
IEEE access, 2024, 卷号: 12, 期号: 1, 页码: 31960 - 31967
作者: Song XL(宋晓莉); Cao ZJ(曹兆锦)

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收藏 | 浏览/下载：1/0 | 提交时间：2025/12/30

Segmented arc permanent magnet synchronous motor(SAPMSM) Hamiltonian theory large telescopes generalized proportional integral observer(GPIO) anti-interference performance

Real-time temperature estimation method for electromagnetic performance improvement of a large axisymmetric radio telescope under solar radiation 期刊论文 OAI收割
Iet Microwaves Antennas & Propagation, 2020, 卷号: 14, 期号: 13, 页码: 1635-1642
作者: Lian, Peiyuan; Wang, Congsi; Xu, Qian; Xiang, Binbin; Shi, Yu

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收藏 | 浏览/下载：61/0 | 提交时间：2021/06/25

radiotelescopes temperature sensors reflector antennas solar radiation temperature database table look-up method temperature field estimation speed real-time estimated temperature field temperature sensors real-time compensation axisymmetric telescopes time temperature estimation method electromagnetic performance improvement axisymmetric radio telescope solar radiation electromagnetic performances EM performance improvements temperature simulation fast estimation method transient temperature field simulation high-frequency radio telescopes large-aperture radio telescopes reflector antenna reflector antennas surface error adjustment pattern field Engineering Telecommunications

Study of the impact of co-phasing errors for segmented primary mirror using nonlinear analysis 期刊论文 OAI收割
Optik, 2019, 卷号: 191, 页码: 80-88
作者: H.S.Yang; X.J.Zhang; Z.L.Li; X.K.Wang; M.M.Xu

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收藏 | 浏览/下载：56/0 | 提交时间：2020/08/24

Ultra large aperture,Space-based telescope,Segmented primary mirro,Co-phasing error,Wavefront deformation,piston error,telescopes,Optics

The black hole at the Galactic Center: Observations and models 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF MODERN PHYSICS D, 2018, 卷号: 27, 期号: 6, 页码: 15
作者: Zakharov, Alexander F.

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收藏 | 浏览/下载：49/0 | 提交时间：2020/03/10

Black holes supermassive black holes gravitational lensing the Galactic Center large telescopes VLBI interferometry graviton mass theories of massive gravity

Ritchey-Common sparse-aperture testing of the Giant Steerable Science Mirror 期刊论文 OAI收割
Applied Optics, 2018, 卷号: 57, 期号: 27, 页码: 7764-7769
作者:

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收藏 | 浏览/下载：34/0 | 提交时间：2019/09/17

point-source sensitivity large telescopes stitching test error calibration Optics

Quality control of mass production of PMT modules for DAMPE 期刊论文 OAI收割
JOURNAL OF INSTRUMENTATION, 2017, 卷号: 12, 页码: 13
作者: Dong, J. N.; Zhang, Y. L.; Zhang, Z. Y.; Wei, Y. F.; Wu, L. B.

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收藏 | 浏览/下载：55/0 | 提交时间：2019/04/08

Calorimeters Gamma telescopes Large detector systems for particle and astroparticle physics

Possible Alternatives to the Supermassive Black Hole at the Galactic Center 期刊论文 OAI收割
JOURNAL OF ASTROPHYSICS AND ASTRONOMY, 2015, 卷号: 36, 期号: 4, 页码: 539-553
作者: Zakharov, A. F.

收藏 | 浏览/下载：41/0 | 提交时间：2016/10/31

Black holes supermassive black holes gravitational lensing the Galactic Center large telescopes VLBI interferometry

Study on ultra-light secondary baffle for coaxial two-mirror telescope (EI CONFERENCE) 会议论文 OAI收割
2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China
作者: Zhang L.; Zhang L.

收藏 | 浏览/下载：98/0 | 提交时间：2013/03/25

The coaxial two-mirror telescope consists of two mirrors facing each other. Classical two-mirror arrangements are Gregorian and Cassegrain. These systems are usually applied to space telescopes and often have optical baffles to prevent stray light from entering the focal plane. The optical baffles consist of concentric rings suspended between the secondary and the primary mirror. The secondary baffle for a large two-mirror optical system is designed and analyzed in this paper. According to mission of a telescope the structure should have high stiffness and high reliability and light weight. Compared with invar aluminum alloy and titanium alloy carbon fiber composite is currently the best material in terms of weight-to-strength ratio. It also has advantages of high temperature tolerance and low thermal expansion. So carbon fiber composite is chosen as material to meet requirements of the coaxial telescope. In this paper optimization method based on finite element analysis (FEA) is used for design the secondary baffle. Minimum weight of the baffle is chosen as an objective function. Thicknesses of former tube and vanes are chosen as variables. Analysis results show that the designed secondary baffle has maximum diameter of 180mm total length of 120mm and weighs 142g. And its fundamental frequency reaches 651Hz. Therefore the baffle has many advantages such as ultra-light weight high stiffness and dimensional stability etc. The optimization method and the baffle design can be helpful to other coaxial telescopes such as Cassegrain Gregorian and their subdivisions. 2012 IEEE.