Calibration device for solar telescope heat field diaphragm internal seeing effect

Abstract

The invention provides a calibration device for a solar telescope heat field diaphragm internal seeing effect. The calibration device comprises a laser device (1), a beam expansion and shrinkage system (2), a heat field diaphragm (3), a beam shrinkage collimation system (4), a wavefront detector (5), a pump (6), a constant temperature water tank (7), a heat field diaphragm temperature sensor (8), an air temperature sensor (9) and a computer (10). The heat field diaphragm is one of the most important heat control devices inside a solar telescope, and the performance of the solar telescope is greatly limited by the internal seeing effect caused by temperature rising of the heat field diaphragm. The device can calibrate the quantitative relation between the temperature difference and the internal seeing effect, quantitative measurement on the solar telescope heat field diaphragm internal seeing effect can be achieved by measuring the temperature difference according to a calibration result, and important bases are provided for controlling the large-caliber solar telescope heat field diaphragm internal seeing effect. The device is simple in structure, convenient to operate, low in cost and high in practicality and innovation.

Description

technical field [0001] The invention relates to the field of seeing effect measurement inside a solar telescope, in particular to a calibration device for seeing effect inside a thermal field diaphragm of a solar telescope. Background technique [0002] With the continuous deepening of human research on solar physics, the requirements for space, time and spectral resolution required for the observation of solar surface activities continue to increase. Therefore, the demand for the aperture of solar telescopes continues to increase. While the diameter of the solar telescope is doubled, while its light-gathering ability is improved, the thermal load of the telescope will increase by 3 to 4 times. In order to solve the increasingly serious problem of thermal effects of solar telescopes and protect the safety of the subsequent optical system, solar telescopes generally use thermal field diaphragms, which cut off most of the solar radiation energy on the thermal field diaphragm t...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: to provide a set of calibration device for the internal seeing effect caused by the thermal field diaphragm of the solar telescope during the working process, and to establish the internal seeing degree of the thermal field diaphragm that is not easy to be directly quantitatively measured Effect, the same as the calibration curve of the thermal field diaphragm and the ambient temperature difference that is easy to measure, through the quantitative measurement of the thermal field diaphragm and the ambient temperature difference, the quantitative measurement of the internal seeing effect of the thermal field diaphragm is realized

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