Non-contact type measuring device used for measuring mirror surface temperature of large-diameter solar telescope primary mirror

Abstract

The invention provides a non-contact type measuring device used for measuring mirror surface temperature of a large-diameter solar telescope primary mirror. The non-contact type measuring device mainly comprises a primary mirror panel (1), an air lance (2), an ambient temperature sensor (3), an air jet temperature sensor (4), a total radiation sensor (5), an anemometer (6) and a data processing module (7). During the operating process of a solar telescope, the mirror surface temperature rise of the primary mirror can cause mirror surface seeing effect and mirror surface thermal deformation, and the performance of the solar telescope is severely restricted. The non-contact type measuring device can be used for monitoring mirror surface temperature of the primary mirror in real time, provides important basis for mirror surface temperature control of the solar telescope primary mirror, and provides data for the analysis of the mirror surface seeing effect and mirror surface thermal deformation. When compared with the traditional contact type temperature measuring device, the non-contact type measuring device can effectively avoid damages to a mirror surface coating by the traditional device and measurement errors caused by exposing the temperature sensor in solar radiation; in addition, the non-contact type measuring device is simple in structure, convenient in operation and low in cost, and has high practicality and innovativeness.

Description

technical field [0001] The invention relates to the field of solar telescope temperature control, in particular to a non-contact measuring device for measuring the temperature of the primary mirror of a large-aperture solar telescope. Background technique [0002] With the development of modern heliophysics research, the requirements for spatial, temporal and spectral resolutions required for the observation of solar surface activities have been continuously improved, and the aperture of solar telescopes has been continuously increased. At present, the study of solar physics has penetrated into the high-resolution observation of the fine structure of the solar surface, requiring the spatial resolution of the solar surface to reach 50-70km, which requires that the aperture of the corresponding solar telescope must reach 1m or larger. [0003] Due to the difficulty in manufacturing large-aperture sealed windows and the pressure birefringence effect, the traditional vacuum-type...

AI Technical Summary

Problems solved by technology

However, this method not only cannot fully reflect the temperature of each area of ​​the mirror, but also may cause damage to the coating in the pasted area and even further affect the coating in the surrounding light-transmitting area.

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