Telescope main light path guide star device and guide star offset calculation method

Abstract

The invention relates to a telescope main light path star guiding device which comprises a telescope main focus detector and a star guiding detector, the telescope main focus detector is located on a telescope focal plane, the star guiding detector is installed near the telescope main focus detector, the star guiding detector and the main focus detector are located on the same focal plane, and the star guiding detector and the telescope main focus detector share the same light path. According to the invention, main light path star guiding is realized, so that position and angle errors of the star guiding detector and the main detector are eliminated, and star guiding and tracking precision of the telescope is improved. The invention further discloses a guide star offset algorithm, the guide star camera sends a formed image to a program for processing within a certain exposure time, the program finds a star in image data by using a method in the field of image processing, and XY (row and column in the image) offset is obtained according to historical records of star positions, so that the guide star offset is obtained. And the offset is returned to the movement mechanism of the telescope to make the movement mechanism perform correction movement, so that the purpose of compensation is achieved, and a more reliable closed-loop control system is formed.

Description

technical field [0001] The invention belongs to the technical field of telescopes, and in particular relates to a design of a guide star detector on the main optical path of a telescope, and according to a plurality of bright stars in a guide star image, an algorithm such as image processing is used to solve them to obtain a bright star. The position offset is used to correct the movement of the telescope's right ascension, declination or the horizontal and pitch axis of the telescope's main optical path guide device and the calculation method of the guide star offset. Background technique [0002] The guide star of the astronomical telescope is a function of observation. The guide star is mainly used in the following occasions: (1) When tracking the star, it is used for long-term tracking continuous imaging shooting or long-exposure imaging shooting. Due to the Earth's autobiography, if the telescope does not move, the star will move from east to west at 15ʺ / s in the celest...

AI Technical Summary

Problems solved by technology

The advantage of using this method is that it is easy to install and debug for this single guide star telescope system, but because the guide star optical path is separated from the telescope optical path, position and angle errors will inevitably occur on the optical path, which will affect the telescope's guide star and tracking precision

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