Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Ren, Deqing"'
Publikováno v:
In Arabian Journal of Chemistry November 2023 16(11)
Autor:
Tian, Pengjiao, Muhmood, Atif, Ren, Deqing, Su, Yingjie, Sun, Yonglin, Cai, Shuang, Xie, Minghong, Wang, Xiqing, Yu, Haizhong
Publikováno v:
In Journal of Cleaner Production 10 July 2023 409
Autor:
Wang, Xiqing, Muhmood, Atif, Ren, Deqing, Tian, Pengjiao, Li, Yuqi, Yu, Haizhong, Wu, Shubiao
Publikováno v:
In Chemosphere June 2023 327
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
Autor:
Dou, Jiangpei, Ren, Deqing
Publikováno v:
The Astrophysical Journal, 832:84 (11pp), 2016 November 20
Direct imaging of exoplanets by reflected starlight is extremely challenging due to the large luminosity ratio to the primary star. Wave-front control is a critical technique to attenuate the speckle noise in order to achieve an extremely high contra
Externí odkaz:
http://arxiv.org/abs/1609.04870
Publikováno v:
Publications of the Astronomical Society of the Pacific, 2019 Nov 01. 131(1005), 1-13.
Externí odkaz:
https://www.jstor.org/stable/26973206
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:
Ren, Deqing
The work of this thesis is to investigate new techniques for Integral Field Spectroscopy (IPS) to make the most efficient use of modem large telescopes. Most of the work described is aimed at the FMOS for the SUBARU 8m telescope. Although this is pri
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369695