Optical photographing celestial body measurement telescope system with three pointing single focal planes

Abstract

The invention discloses an optical photographing celestial body measurement telescope system with three pointing single focal planes. The system comprises a telescope main body part and a bracket part, wherein a reflector, a correction mirror, a secondary mirror, a primary mirror and an image acquisition camera are sequentially arranged on a light path of the telescope main body part; the reflector is a prism with three reflecting surfaces, the included angle between every two of the three reflecting surfaces is 135 degrees, and reflected light on the three reflecting surfaces of the reflectorenters the lens cone in parallel and is perpendicular to the correction lens. The three-directional single-focal-plane optical photographing celestial body measurement telescope is equivalent to observation of three independent stations which are 120 degrees away from each other in the world; meanwhile, the measurement of the earth polar shift and rotation parameters UT1 (or day length LOD) can be realized only by observing for several hours, the actual measurement and change sequence of all earth orientation parameters can be continuously provided after long-term (several months) continuousobservation, and the earth attitude parameters can be independently and autonomously provided for a user by a single set of equipment.

Description

Technical field [0001] The invention belongs to the technical field of astronomical optical photographic astrometry, and particularly relates to an optical photographic astronomical telescope for determining the orientation parameters of the earth. Background technique [0002] At present, various astronomical geodesy techniques used to determine the orientation parameters of the earth (that is, precession, nutation, pole shift and rotation) require observation of celestial bodies in different celestial regions at large-span stations on the earth to determine the orientation parameters of the earth. In the past, the more classic instruments (such as contour gauge, zenith tube, meridian ring, and midplane) need to be deployed on a large scale, requiring precise manual adjustment to construct a clear geometric relationship with the local plumb line and the station horizontal plane. Usually It can only provide results with a time resolution of 5 days (the earth orientation parameter...

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: the purpose of the present invention is to address the deficiencies in the prior art, to provide a three-pointing single focal plane optical photographic astrometric telescope system, to overcome the need for large-scale station deployment and the need for artificial Issues with adjusting levels, observing only one star at a time, and not being able to determine the full set of Earth orientation parameters

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