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Quantitative evaluation on thermal seeing induced 2m ring solar telescope.

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|December 2, 2023

Summary

A new method quantifies thermal seeing effects in solar telescopes using Large Eddy Simulation (LES). This analysis improves observations for instruments like the 2m Ring Solar Telescope (2m-RST).

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Area of Science:

Solar Physics
Optical Astronomy
Atmospheric Turbulence

Background:

Thermal seeing significantly impacts the quality of solar telescope observations.
Quantifying these thermal effects is crucial for accurate solar imaging.
Existing methods may not fully capture the dynamic nature of turbulence.

Purpose of the Study:

To develop and validate a comprehensive method for quantifying thermal seeing.
To apply this method to assess the thermal seeing of the 2m Ring Solar Telescope (2m-RST).
To ensure optimal observation effects for the 2m-RST through error allocation.

Main Methods:

Utilized a three-dimensional Large Eddy Simulation (LES) turbulence model.
Simulated transient flow fields around critical telescope components (mirrors, heat-stop).
Calculated thermal seeing based on the stochastic influence of turbulence on light rays.

Main Results:

Successfully developed a method to quantify thermal seeing effects.
Simulation parameters were calibrated with experimental data.
Simulation outcomes were validated against empirical formulas.

Conclusions:

The developed LES-based method provides a robust way to evaluate thermal seeing.
The method was successfully applied to the 2m-RST, enabling error allocation.
This work enhances the observational capabilities of solar telescopes by addressing thermal turbulence.