Celestial sphere observation area estimation method and celestial sphere observation system

Abstract

The invention relates to a celestial sphere observation area estimation method and a celestial sphere observation system. The method comprises the steps of: firstly, subjecting the whole celestial sphere to equal-area multiple times of division through an HEALPix method to obtain a plurality of minimum spherical quadrangles with the same area, and taking the minimum spherical quadrangles as bottom layer nodes; and secondly, counting the number of the bottom layer nodes and the sky patrol observation information in each bottom layer node in a spherical area of the celestial sphere needing to be estimated so as to estimate the observation area of the celestial sphere. The HEALPix method is adopted, the whole celestial sphere is divided into any nodes with the same area, the area of each observation area is expressed by the number of the nodes, iterative calculation is carried out on all observations, finally observation information is given to each HEALPix bottom layer node, and the observation area of the whole celestial sphere can be estimated according to the area expressed by the bottom layer nodes and the observation information. Therefore, the observation area of the spherical surface of any shape of the celestial sphere can be estimated.

Description

technical field [0001] The invention relates to the field of astronomical observation, in particular to a method for estimating the area of ​​celestial sphere observation and a celestial sphere observation system. Background technique [0002] In astronomical research, sky survey observation has become an increasingly important observation method. The Sloan Digital Sky Survey (SDSS) pioneered a sky survey project, and its output has far exceeded that of the Hubble Space Telescope. Large-scale sky survey observations. LSST is a ground-based sky survey observation project in the United States, and it plans to cover an area of ​​18,000 square degrees in the optical band in 10 years; WFIRST is an infrared space telescope observation project planned by NASA, and it is planned to use 2 years Observations over 2,000 square degrees of the sky; Euclid is an astronomical observation project deployed by the European Space Agency (ESA) that will be located on the orbit of the L2 point...

AI Technical Summary

Problems solved by technology

Sky survey observation is the main observation method of astronomical research in the future, and in sky survey observation, it is unavoidable to calculate the area of ​​the sky area. In the existing methods of calculating the area, the calculation of the area of ​​the regular sky area is basically carried out, but for more For complex observation patterns, irregular sky areas or uncertain number of observations, the calculation is not accurate, and the calculation is very complicated, so an intuitive, simple and reliable method is needed for area calculation

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