17 citations · 88 across the 11 of their papers we have counts for
11 papers · 1 filter
Design and dynamics experiment of filter wheel mechanism of space coronagraph
Wei Guo, Jiangpei Dou, Mingming Xu +4
In order to realize multi-spectral imaging of space coronagraph, a compact filter wheel mechanism is designed. The filters with different spectral transmittance can be cut into the…
Performance Calibration of the Wavefront Sensor's EMCCD Detector for the Cool Planets Imaging Coronagraph Aboard CSST
Jiangpei Dou, Bingli Niu, Gang Zhao +5
The wavefront sensor (WFS), equipped with an electron-multiplying charge-coupled device (EMCCD) detector, is a critical component of the Cool Planets Imaging Coronagraph (CPI-C) on…
Portable Adaptive Optics for Exoplanet Imaging
Yongtian Zhu, Jiangpei Dou, Xi Zhang +3
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 limitati…
Design and experimental test of an optical vortex coronagraph
Chengchao Liu, Deqing Ren, Yongtian Zhu +1
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 th…
Phase Quantization Study of Spatial Light Modulator for Extreme High contrast Imaging
Jiangpei Dou, Deqing Ren
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 at…
A Transmission-Filter Coronagraph: Design and Test
Deqing Ren, Jiangpei Dou, Yongtian Zhu
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 cons…
Focal plane wave-front sensing algorithm for high-contrast imaging
JiangPei Dou, DeQing Ren, YongTian Zhu +1
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 i…
A High-contrast Imaging Algorithm: Optimized Image Rotation and Subtraction
Jiangpei Dou, Deqing Ren, Gang Zhao +3
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…
A high-contrast coronagraph for earth-like exoplanet direct imaging: design and test
C. C. Liu, D. Q. Ren, J. P. Dou +5
The high-contrast coronagraph for direct imaging earth-like exoplanet at the visible needs a contrast of 10^(-10) at a small angular separation of 4 lambda/D or less. Here we repor…
An iterative wave-front sensing algorithm for high-contrast imaging systems
Jiangpei Dou, Deqing Ren, Yongtian Zhu
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 re…
High-contrast coronagraph for ground-based imaging of Jupiter-like planets
Jiangpei Dou, Deqing Ren, Yongtian Zhu
We propose a high-contrast coronagraph for direct imaging of young Jupiter-like planets orbiting nearby bright stars. The coronagraph employs a step-transmission filter in which th…