Optical turbulence sensor and method for combining multi-aperture glitter and differential image motion

A differential image, multi-aperture technique for use in atmospheric optics

Inactive Publication Date: 2013-10-02
NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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  • Description
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  • Application Information

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Problems solved by technology

However, this measuring instrument has not yet appeared in the prior art

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  • Optical turbulence sensor and method for combining multi-aperture glitter and differential image motion
  • Optical turbulence sensor and method for combining multi-aperture glitter and differential image motion
  • Optical turbulence sensor and method for combining multi-aperture glitter and differential image motion

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Embodiment 1

[0032] Example 1, Astro-optical turbulence sensor combining multi-aperture blaze and differential image motion, see figure 1 and Figure 2-1 , Figure 2-2 : Assume that the parameters of the small telescope with the combination of multi-aperture blaze and differential image motion astronomical optical turbulence sensor are as follows: the aperture is Φ355.6mm, the focal length is 3910mm, the 400-700nm broadband imaging, and the center wavelength is 550nm.

[0033] The Febry lens 1 with a focal length of 140mm and a diameter of Φ25mm images the entrance pupil of the small telescope on the exit pupil splitting mirror component U1, and the combined focus of the Febry lens 1 and the small telescope is located at the field diaphragm 5, where the diameter of the field diaphragm 5 is The thickness of Φ15mm is 1mm, and the diameter of the central through hole is Φ2mm.

[0034]The rear of the Febry lens 1 is sequentially installed with: a mirror 2 that can be opened and closed (leng...

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Abstract

The invention discloses an optical turbulence sensor and a method for combining multi-aperture glitter and differential image motion. The optical turbulence sensor consists of a Febry lens, an exit pupil splitting mirror component, a CCD (charge coupled device) image sensor and a computer, and is characterized in that the Febry lens is used for matching an entrance pupil of a small telescope, so that the exit pupil is positioned on the exit pupil splitting mirror component; a combination focus of the Febry lens and the small telescope is positioned at a field diaphragm; an openable reflecting mirror, the field diaphragm with a through hole at the center, and the exit pupil splitting mirror component U1 are sequentially mounted on the same optical axis behind the Febry lens; a grid partitioning board and a field eye lens are arranged on a reflecting optical axis of the openable reflecting mirror; a folding mirror and the CCD image sensor are sequentially arranged on a reflected light path of the exit pupil splitting mirror component; the output end of the CCD image sensor is connected with the computer. Field installation and field adjustment of a system are facilitated; optical and mechanical structures are greatly simplified; influence from external vibration is avoided, so that the field installation and the field adjustment are facilitated and the reliability is greatly improved.

Description

technical field [0001] The invention relates to the field of atmospheric optics, in particular to an astronomical optical turbulence sensor combining multi-aperture flare and differential image motion, and is a sensor for measuring astronomical optical turbulence parameters. The invention also provides a measurement method of the astronomical optical turbulence sensor. Background technique [0002] When the light wave is transmitted in the turbulent atmosphere, the light wave parameters (intensity, phase and propagation direction, etc.) fluctuate due to the turbulent disturbance, which leads to the drift and expansion of the beam and the blurring of the image. The existence of atmospheric turbulence directly affects high-resolution imaging, limiting the accuracy of astronomical photometry, the actual angular resolution of the telescope, and the observable spectral range. Therefore, for large-aperture ground-based optical telescopes, it is very important to select an excelle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/06G01N21/85
Inventor 裴冲陈华林袁祥岩
Owner NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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