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Polarization filtering method and apparatus for astronomical optical telescope

A polarization filtering and telescope technology, applied in the field of photoelectric detection, can solve the problems of suppressing the background of atmospheric scattering, difficulty in obtaining observation data of ground-based daytime astronomical objects, etc., so as to achieve the effect of suppressing the background of atmospheric scattering, improving the effect, and improving the signal-to-noise ratio.

Inactive Publication Date: 2006-08-30
ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

Therefore, it is more difficult to obtain ground-based daytime astronomical observation data
[0005] At present, in addition to using spectral filtering to improve the signal-to-noise ratio of star detection based on the difference in spectral characteristics between the star target and the atmospheric background, there is no way to better suppress the scattering background of the atmosphere and reduce the impact on the observed celestial signal. Star observation can be performed during daylight hours

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  • Polarization filtering method and apparatus for astronomical optical telescope
  • Polarization filtering method and apparatus for astronomical optical telescope
  • Polarization filtering method and apparatus for astronomical optical telescope

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Embodiment Construction

[0054] The polarization filter device for astronomical optical telescopes is characterized in that it includes an optical component adapter tube 11, the adapter tube 11 is installed on the adapter plate 1, the adapter tube 11 is a stepped shape composed of a large tube and a small tube, and the inner wall of the small tube is set There is a bearing 12, a ring gear 6 is installed in the bearing 12, a polarizer 2 is installed in the ring gear 6, a stepping motor 5 is installed on the step part of the big tube, and a driving gear 4 coaxial with the stepping motor 5 shaft is installed in the big tube It meshes with the encoder 3, the driving gear 4 and the ring gear 6, and the rear end of the small tube is threadedly connected with a lens barrel 9, and an optical filter 8 and an attenuation sheet 7 are installed in the lens barrel 9. The lens barrel 9 rear end has interface, connects CCD camera, and the interface of lens barrel rear end also can be such as photographic interface, v...

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Abstract

The invention relates to an astronomical optics telescope polarization filter method and device. It installs the atmosphere dispersion polarization radiation measuring meter on shank of main telescope and rapidly gain polarization angle direction and polarization state data of target object by single channel polarization radiation meter. Comparing the polarization angle and the drift testing angle of polarizing film, rotating polarizing film to make the drift testing direction plumbing to atmosphere polarization direction, the disturbance of atmosphere dispersion and radiation would be effectively restricted. The invention could improve chronometer planet observing effect in day time, prolong time span of observing, and increase observing data. It has bright application prospect in ground work chronometer observation.

Description

technical field [0001] The invention belongs to the technical field of photoelectric detection, and specifically relates to a polarization filter device that can be added to an astronomical optical telescope, can be used for atmospheric background filtering during astronomical observation, improves the effect of daytime astronomical observation and prolongs the time of daytime observation. Background technique [0002] In the field of astronomy, astronomical optical telescopes are the most important means of optical observation of stars. However, the influence of the atmosphere cannot be avoided during ground-based observation, and atmospheric scattering is an important factor affecting the observation effect. It is for this reason that the site selection for ground-based astronomical observations is based on the principle of being far away from cities and at high altitudes. [0003] Daytime sunlight is scattered and absorbed by the Earth's atmosphere. Among them, astronom...

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Application Information

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IPC IPC(8): G02B23/00G02B7/00G01J4/00
Inventor 孙晓兵洪津骆冬根杨伟锋荀毓龙乔延利叶松
Owner ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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