Mid-infrared atmospheric radiation detection system for astronomical site selection

Abstract

The invention provides a mid-infrared atmospheric radiation detection system for astronomical site selection. The mid-infrared atmospheric radiation detection system comprises a shell and a refrigerating device, wherein a heat preservation sealing cavity I and a heat preservation sealing cavity II are formed in the shell, an infrared telescope is fixedly arranged in the heat preservation sealing cavity I, an infrared detector is fixedly arranged in the heat preservation sealing cavity II, and a detection port of the infrared detector is connected with a light outlet of the infrared telescope;and the refrigerating device comprises a refrigerating machine and refrigerating sheets, at least one refrigerating sheet is fixed on the outer walls of the heat preservation sealing cavity I and theheat preservation sealing cavity II, a cooling pipeline is arranged between a cooling liquid outlet and a cooling liquid inlet of the refrigerating machine, and the cooling pipeline is connected withthe refrigerating sheets. According to the mid-infrared atmospheric radiation detection system, the temperature of the infrared telescope and the infrared detector can be rapidly reduced and the temperature fluctuation can be controlled in a small range by adopting a cavity-dividing temperature control method, so that the spontaneous radiation of the infrared detection system is reduced, and the measurement accuracy is ensured.

Description

technical field [0001] The invention relates to the technical field of mid-infrared radiation measurement, in particular to a mid-infrared atmospheric radiation detection system for astronomical site selection. Background technique [0002] Any object above absolute zero can produce infrared radiation. While the atmosphere absorbs radiation, it also radiates energy outward in the form of radiation. During the observation process of ground-based infrared telescopes, the detected target is always under the background of the earth's atmosphere. When the infrared telescope observes the target, it is also observed together with its background. When the target radiation is similar to the atmospheric radiation, we cannot separate the target radiation from the atmospheric radiation. In order to obtain observation data with a higher signal-to-noise ratio, Larger-caliber telescopes are often needed, but increasing the telescope caliber is relatively difficult, and it is more convenien...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a mid-infrared atmospheric radiation detection system for astronomical siting, which can resist harsh environments during the astronomical siting process, and can accurately measure the local mid-wave infrared atmospheric radiation, solving the current problem in astronomical Technical problem of unable to measure atmospheric radiation in real time during site selection

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