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Space telescope on-orbit adjustment method with minimum full-view-field ellipticity as correction target

A technology of space telescope and full field of view, applied in the field of on-orbit adjustment of space telescope, to achieve the effects of low engineering cost, high adjustment accuracy and improved achievability

Pending Publication Date: 2021-12-28
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0006] At present, there is no report on the research on the on-orbit optical adjustment method of the space telescope with the minimum point spread function ellipticity as the calibration target.

Method used

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  • Space telescope on-orbit adjustment method with minimum full-view-field ellipticity as correction target
  • Space telescope on-orbit adjustment method with minimum full-view-field ellipticity as correction target
  • Space telescope on-orbit adjustment method with minimum full-view-field ellipticity as correction target

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Embodiment Construction

[0063] like figure 1 As shown, a spatial telescope of the present invention is minimized for the correction target in the rail (the following steps) mainly include the following steps:

[0064] Step 1, choose the appropriate adjustment amount type

[0065] The current space telescope is generally equipped with a secondary mirror and a folding plane. On the one hand, the secondary mirror is the necessary components of the current two anti-telescopes; on the other hand, the spatial telescope generally needs to use the folded plane mirror to perform stability, focus or module switching.

[0066] In terms of physically, in the case where the optical system parameters (including the basic design parameters and facial error parameters, etc.), there is a set of adjustments of the secondary mirror and the folded plane, making the whole field of view diffusion function ovary optimal In other words, the optimal field distribution objective existence is exhibited by the optimal view of the w...

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Abstract

The invention relates to a space telescope on-orbit adjustment method with the minimum full-view-field ellipticity as a correction target, belongs to the field of on-orbit optical adjustment, and solves the problem of how to carry out optimal correction on the full-view-field point spread function ellipticity of a space telescope in an on-orbit mode. The method comprises the following steps of: firstly, determining a secondary mirror and a reflex plane mirror as adjustable degrees of freedom of full-field ellipticity optimization correction; secondly, determining a corresponding aberration field distribution form when the full-view-field ellipticity is optimal by taking the full-view-field ellipticity average value as a target function and the misalignment amount of the secondary mirror and the reflex plane mirror as independent variables and utilizing a numerical optimization means; and finally, according to the determined full-view-field ellipticity optimal aberration field distribution, calculating the adjustment amount of the secondary mirror and the reflex plane mirror by using a sensitivity matrix method. The method has the advantages of being simple and convenient in calculation, high in adjustment precision, low in engineering cost and the like. The realizability of in-orbit optical adjustment of a space telescope is improved while the ellipticity of the full-view-field point spread function is optimally corrected. The method is of great significance to development of large-aperture astronomical telescopes.

Description

Technical field [0001] The present invention belongs to the technical field of track optical adjustment, and in particular to a spatial telescope of the total field of view to be calibrated to be calibrated in the rail regression. Background technique [0002] Large diameter astronomical telescope is an important strategic significance for my country's scientific and technological progress and social development. Innovation provides an important driving force, traction a rapid development of several cutting-edge technology and its industries. [0003] The spatial telescope point diffusion function is of great significance for dark matter, dark energy exploration. The dark matter and dark energy do not absorb, launch or radiate light, and cannot be directly observed, and only the weak gravitational lens effect can be used for indirect observation, and the strength of the current weak gravitational lens effect is mainly measured by the amount of the celestial or galaxy ellips. Ther...

Claims

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Application Information

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IPC IPC(8): G06F17/12G06F17/15G06F17/16G06F17/18
CPCG06F17/12G06F17/15G06F17/16G06F17/18
Inventor 鞠国浩徐抒岩白晓泉许博谦姜凤义
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI