Cassegrain type astronomical telescope

Abstract

The invention is suitable for the technical field of astronomical telescopes, and provides a Cassegrain type astronomical telescope, which comprises: a main lens barrel assembly, wherein a main reflector, a secondary reflector and a correction lens group which share the same optical axis are arranged in the main lens barrel assembly; a pull rod adjusting assembly for adjusting the distance and angle of the secondary reflector relative to the main reflector; an adjusting screw assembly for adjusting the distance and angle of the main reflector relative to the secondary reflector; and a six-point supportingg assembly, wherein the six-point supporting assembly is rotationally arranged on the adjusting screw assembly and used for supporting the main mirror. According to the invention, two reflecting mirrors are adopted, so that the space is effectively utilized, the length of an optical system is shortened, and the structure is more compact; a unique three-point-to-six-point expansion modeis adopted, so that each point is uniformly stressed and does not collapse when the lens is mounted; and the positions and angles of the main reflector and the secondary reflector can be convenientlychanged through the pull rod adjusting assembly and the adjusting screw assembly, so that the purpose of adjusting the optical axis is achieved.

Description

technical field [0001] The invention belongs to the technical field of astronomical telescopes, in particular to a Cassegrain type astronomical telescope. Background technique [0002] Astronomical Telescope is an important tool for observing celestial bodies. It is no exaggeration to say that without the birth and development of telescopes, there would be no modern astronomy. With the improvement and improvement of the performance of telescopes in all aspects, astronomy is also undergoing a huge leap, rapidly advancing human understanding of the universe. The Cassegrain telescope was invented by Cassegrain in 1672. It is a reflecting telescope composed of two mirrors. The larger one is called the primary mirror and the smaller one is called the secondary mirror. Usually there is a hole in the center of the primary mirror, and the image is imaged behind the primary mirror. Its focus is called the Cassegrain focus. [0003] However, the aperture of the primary reflector of...

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Problems solved by technology

[0003] However, the aperture of the primary reflector of this type of telescope is often constrained by its own weight. When the aperture is too large, it is easy to cause the collapse of the supporting structure of the primary reflector, resulting in astigmatism and coma; the optical system only includes the primary reflector and the secondary reflector , the imaging effect is poor; it is also difficult for the adjustment mechanism to adjust the optical axis

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