Affiliation:
1. Key Laboratory of Photonic Control Technology (Tsinghua University) Ministry of Education
2. Chinese Academy of Sciences
3. Kunming University of Science and Technology
Abstract
Thermal seeing is one of the factors that affect solar telescope observations. A comprehensive analysis method is developed to quantify the thermal seeing effects. A three-dimensional Large Eddy Simulation (LES) turbulence model is used to obtain the transient flow fields around the primary mirror, the secondary mirror and the heat-stop. The thermal seeing is calculated based on the stochastic dynamic influence of turbulence on the light rays. The key parameters of the simulation were calibrated by experiments, and the simulation results were validated by empirical formulas. This method has been applied to evaluate the thermal seeing of the 2m Ring Solar Telescope (2m-RST). Error allocation is performed based on the research results to ensure the Observation effect of 2m-RST.
Funder
National Key Research and Development Program of China
Tsinghua Initiative Scientific Research Program
Tsinghua University Education Foundation
Tsinghua-Jiangyin Innovation Special Fund
Key Technology Research on the heat stop of Large Solar Telescope
Subject
Atomic and Molecular Physics, and Optics