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Daytime celestial body detecting device

A detection device and a star technology, which is applied in the field of daytime star detection devices, can solve problems such as difficult to improve the signal-to-noise ratio, and achieve the effects of high cost performance, suppression of stray light, and high image quality

Inactive Publication Date: 2010-03-31
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0009] However, for areas where the polarization degree of the sky background is very small, such as Babinet, Brewster, the neutral point of Arago and the area near the sun, the polarization degree of the target star and the sky background is not much different, so it is difficult to improve the signal-to-noise in this area than to achieve the purpose of detection

Method used

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Embodiment Construction

[0033] Such as figure 1 , 2 , 3, the present invention consists of shading cover 1, protective glass 2, plate glass 3, mirror 4, two-piece compensating mirror group 5, main mirror 6, optical filter turntable and adjustment mechanism 7, polarizer and its The adjustment mechanism 8, the CCD camera 9, the cooling channel 10, and the chassis 11 are composed. Among them, the protective glass 2, the flat glass 3, the reflection mirror 4, the two-piece compensating mirror group 5, and the main mirror 6 form a symmetrical fold-back optical system. The hood 1 and the symmetrical fold-back optical system are installed in the same lens barrel, and the lens barrel is installed on the chassis 11, and the chassis 11 is equipped with a filter and its adjustment mechanism 7, a polarizer and its adjustment mechanism 8, and a CCD camera 9 10 heat dissipation channels.

[0034] The hood 1 is installed at the front of the system. When measuring stars in the daytime, since the background is the...

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Abstract

The invention relates to a daytime celestial body detecting device, which is characterized by mainly comprising a light shield, a symmetrical turn-back type optical system, an eight-shift light filterturntable, a linear polaroid turntable, a CCD camera and a corresponding mechanical structure. The daytime celestial body detecting device adopts a spectral filtering method and a polarization methodto detect target celestial bodies under a daytime cloudless sky background while having novelties, and improves the performance of detecting the daytime celestial bodies.

Description

technical field [0001] The invention belongs to the design field of optical detection instruments, and relates to a daytime star detection device. Background technique [0002] Generally speaking, people detect stars at night, but there are some stars that appear during the day, and it is difficult to detect such stars that appear during the day using ordinary detection methods. Therefore, it is more difficult to detect them. The main difference between daytime and nighttime star detection is the difference in the brightness of the background light. During the daytime, the signal of the target itself is very weak, while the signal generated by the sky background is strong, coupled with the influence of atmospheric scattering, absorption and turbulence, the contrast of the target is very poor, making it difficult to identify. The main difficulty in daytime star detection lies in the low contrast and low signal-to-noise ratio caused by the strong background. Therefore, in o...

Claims

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Application Information

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IPC IPC(8): G01S17/89G01S7/481G02B7/00
Inventor 程锋蓝公仆马文礼高晓东朱耆祥
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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