2018 annual discussion on the hottest national maj

The 2018 annual seminar of the national major scientific research instrument development project was held in Xi'an, Shaanxi Province. On August, the 2018 annual technical seminar of the national major scientific research instrument development project "development of extraterrestrial star detection system based on new coherent dispersion technology" was successfully held in Xi'an, Shaanxi Province. From China Polar Research Center, Nanjing University, National Astronomical Observatory, Nanjing Institute of celestial optics, and Yun on August, the 2018 annual technical seminar of the national major scientific research instrument development project "development of extraterrestrial star detection system based on new coherent dispersion technology" was successfully held in Xi'an, Shaanxi Province. More than a dozen experts and scholars from several domestic universities and scientific research institutions, such as China Polar Research Center, Nanjing University, National Astronomical Observatory, Nanjing Tianguang Institute, Yunnan Observatory, Xi'an Institute of Optics and mechanics, attended the meeting to work out plans for the development of the project and the static performance experiment of the specimen

light is an important medium for human beings to understand the universe. Using the small disturbance caused by the planet's gravitational attraction to the star's operation, through the spectral detection of the distant starlight, we can find the Doppler shift of the star's spectrum caused by the change of its operating speed, and then we can indirectly infer whether there is a planet orbiting the star, and further determine the minimum mass of the planet, This method of detecting extrasolar planets is called the apparent velocity method. So far, more than 700 exoplanets have been discovered by using the apparent velocity method. The coherent dispersion technique based on the combination of interference and dispersion principle is a new and effective way to realize the apparent velocity method and improve the detection accuracy. By using coherent dispersion instruments (codes) to measure the frequency shift of the stellar spectrum with high accuracy and achieve sub-m/s measurement accuracy, it is possible to find habitable/earth like exoplanets

through this meeting and then re calibrating the sensor, it can work normally. The research team has deepened its understanding of the development task and further strengthened its cohesion; All participating units not only saw the achievements, but also found some problems in the project research and management, and timely formulated measures to solve them. All participating units have said that they will strictly follow the project schedule, concentrate advantageous scientific research forces to promote the development of the project, and complete the research objectives of the project with high quality, so as to actively contribute to the development of astronomy in China after it is completed and put into operation in 2022