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Three-mode switching system for extrasolar planet imager of Coude telescope

A technology for switching systems and telescopes, applied in telescopes, instruments, optics, etc., can solve the problems of high cost, low switching accuracy and reliability, and large size of the mode switching mechanism, achieve good meshing performance, and improve positioning and switching accuracy , the effect of low noise

Active Publication Date: 2020-07-17
NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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  • Application Information

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Problems solved by technology

The mode switching mechanism of the folded-axis telescope exoplanet imager in the prior art is large in size and high in cost, and the switching accuracy and reliability are not high

Method used

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  • Three-mode switching system for extrasolar planet imager of Coude telescope
  • Three-mode switching system for extrasolar planet imager of Coude telescope
  • Three-mode switching system for extrasolar planet imager of Coude telescope

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Embodiment Construction

[0038] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0039] like figure 1 The three-mode switching system of the folded-axis telescope exoplanet imager, that is, the calibration system, is used to switch the self-calibration mode, observation mode and calibration mode of the fold-axis telescope exoplanet imager to realize three Organic cut-ins and cut-outs of patterns. The three-mode switching system of the present invention includes a self-calibrating light source switching device, a calibration light source switching device, an optical path switching device and a positioning device.

[0040] With reference to the optical path switching device shown in the figure, the substrate 1 is provided with a calibration light source hole, a star light hole and a calibration light source hole. The motor 3 drives the base plate 1 to rotate through the helical ...

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Abstract

The invention relates to the field of extrasolar planet observation imagers, in particular to a three-mode switching system for an extrasolar planet imager of a Coude telescope. The switching system comprises a self-calibration light source switching device, a calibration light source switching device, a light path switching device and a positioning device. A calibration light source hole, a starlight hole and a calibration light source hole are formed in a substrate in the light path switching device. The motor drives the substrate to rotate through bevel gear transmission, the three holes inthe substrate are aligned with a light path of the extrasolar planet imager, and then switching of the three modes of the extrasolar planet imager is achieved. The self-calibration light source switching device and the calibration light source switching device achieve the switching of a plurality of different self-calibration light sources and two calibration light sources through a wavelength division multiplexer and a Y-shaped optical fiber respectively. A positioning groove and a sensor assembly in the positioning device are used for ensuring the switching precision of the three-mode switching system.

Description

technical field [0001] The invention relates to the field of exoplanet imagers, in particular to a three-mode switching system for an axis-folding telescope exoplanet imager. Background technique [0002] The exoplanet imager needs to self-calibrate the overall optical path before working, and correct system errors through adaptive optics. This mode is called self-calibration mode. After the calibration of the exoplanet imager is completed, the starlight detected by the folding telescope is introduced into the exoplanet imager for scientific observation. This mode is called the observation mode. When the image processing of the captured starlight is performed when the observation is completed, scientific calibration of the exoplanet imager is required. This mode is called the calibration mode. When the exoplanet imager detects exoplanets, it needs to switch among the above three modes. The mode switching mechanism of the folding-axis telescope exoplanet imager in the prior...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B23/00G02B23/12G01R33/07
CPCG01R33/072G02B23/00G02B23/12
Inventor 许明明窦江培朱永田张熙赵刚郭晶戚永军
Owner NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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