Zobrazeno 1 - 10
of 163
pro vyhledávání: '"Zhu, Yongtian"'
Publikováno v:
In Sensors and Actuators: A. Physical 1 February 2024 366
Autor:
Hao, Zhibo, Ye, Huiqi, Han, Jian, Tang, Liang, Zhai, Yang, Xiao, Dong, Zhu, Yongtian, Zhang, Kai, Wang, Liang, Zhao, Gang, Zhao, Fei, Wang, Huijuan, Zheng, Jie, Liu, Yujuan, Wang, Jiaqi, Wei, Ruyi, Yan, Qiangqiang
Context: Instrumental profile (IP) is the basic property of a spectrograph. Accurate IP characterisation is the prerequisite of accurate wavelength solution. It also facilitates new spectral acquisition methods such as the forward modeling and deconv
Externí odkaz:
http://arxiv.org/abs/2005.07864
Autor:
Zhang, Kai, Zhou, Yifei, Tang, Zhen, Saunders, Will, Venn, Kim A., Shi, Jianrong, McConnachie, Alan W., Szeto, Kei, Wang, Lei, Zhu, Yongtian, Hu, Zhongwen
The Maunakea Spectroscopic Explorer (MSE) project will transform the CFHT 3.6m optical telescope to a 10m class dedicated multi-object spectroscopic facility, with an ability to measure thousands of objects with three spectral resolution modes respec
Externí odkaz:
http://arxiv.org/abs/1807.08710
The Portable Adaptive Optics (PAO) is a low-cost and compact system, designed for 4-meter class telescopes that have no Adaptive Optics (AO), because of the physical space limitation at the Nasmyth or Cassegrain focus and the historically high cost o
Externí odkaz:
http://arxiv.org/abs/1806.08050
The optical vortex coronagraph (OVC) is one of the promising ways for direct imaging exoplanets because of its small inner working angle and high throughput. This paper presents the design and laboratory demonstration performance at 633nm and 1520nm
Externí odkaz:
http://arxiv.org/abs/1703.04228
Publikováno v:
Publications of the Astronomical Society of the Pacific, Vol. 122, No. 891 (May 2010), pp. 590-594
We propose a transmission-filter coronagraph for direct imaging of Jupiter-like exoplanets with ground-based telescopes. The coronagraph is based on a transmission filter that consists of finite number of transmission steps. A discrete optimization a
Externí odkaz:
http://arxiv.org/abs/1510.03796
Publikováno v:
Sci China Ser G-Phys Mech Astron, Aug. 2009, vol. 52, no. 8, 1284-1288
High-contrast imaging provided by a coronagraph is critical for the direction imaging of the Earth-like planet orbiting its bright parent star. A major limitation for such direct imaging is the speckle noise that is induced from the wave-front error
Externí odkaz:
http://arxiv.org/abs/1510.03791
Image Rotation and Subtraction (IRS) is a high-contrast imaging technique which can be used to suppress the speckles noise and facilitate the direct detection of exoplanets. IRS is different from Angular Differential Imaging (ADI), in which it will s
Externí odkaz:
http://arxiv.org/abs/1501.03893
Autor:
Bryant, Julia J., Motohara, Kentaro, Vernet, Joël R. D., Ji, Hangxin, Li, Jun, Dai, Songxin, Yu, Haoran, Zhang, Shuling, Chen, Yi, Pan, Jinyu, Xu, Qimeng, Zhu, Yongtian, Hu, Zhongwen
Publikováno v:
Proceedings of SPIE; July 2024, Vol. 13096 Issue: 1 p130961U-130961U-15, 12965155p
Wave-front sensing from focal plane multiple images is a promising technique for high-contrast imaging systems. However, the wave-front error of an optics system can be properly reconstructed only when it is very small. This paper presents an iterati
Externí odkaz:
http://arxiv.org/abs/1009.2561