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Measuring method for real-time accurate direction of astronomical telescope

A technology of an astronomical telescope and a measuring method, which is applied in the field of real-time accurate pointing of astronomical telescopes, can solve problems such as inconvenience of observers, and achieve the effect of good actual processing effect and beneficial direction correction.

Inactive Publication Date: 2012-03-14
ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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Problems solved by technology

Otherwise, it will cause great inconvenience to the observer

Method used

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  • Measuring method for real-time accurate direction of astronomical telescope

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Embodiment 1

[0034] Embodiment 1, the measurement method of astronomical telescope real-time precise pointing, with reference to figure 1 : The steps are as follows: (1) The observation time and pointing data acquisition subsystem receives the GPS time signal in real time, collects the telescope pointing data in real time, monitors the exposure start signal and end signal of the CCD in real time, and latches the time information of the CCD exposure start and end moments. ⑵. The image acquisition subsystem performs real-time acquisition of frame transfer CCD images. Its workflow is to control the frame transfer CCD, according to the given exposure time, collect the CCD image according to the sampling frequency obtained by the image readout frequency of the frame transfer CCD, transfer the frame transfer CCD image of the collected space debris and background stars to the computer in the specified buffer in memory. ⑶. The theoretical star map generation sub-system generates a matching librar...

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Abstract

The invention relates to a measuring method for the real-time accurate direction of an astronomical telescope, and a control system works according to the following steps: (1) acquiring the observation time and the directing data; (2) acquiring images; (3) generating theoretical star atlases; (4) carrying out the full-frame scanning of the images; (5) carrying out the matching distribution of the theoretical star atlases and actually-measured star atlases; (6) measuring the direction of the telescope; and (7) giving out the accurate direction of the telescope in real time by a computer system according to the input data, and guiding the telescope to carry out the observation and the tracking of space debris. In the invention, the accurate direction of the telescope can be measured in real time according to an acquired CCD (Charge Coupled Device) image as well as the moment corresponding to the image and the direction with an error, the measured direction precision of the telescope is superior to one half of the image-element resolution of the CCD image, the differing degree of the error of the telescope is measured in time, and the actual direction of the telescope can also be accurately measured. The processing effect is good, and the measuring method can be widely applied to the fields of scientific researches and projects and is particularly favorable to the direction correction of movable-type observing equipment.

Description

technical field [0001] The invention is a brand-new method for measuring the real-time and precise pointing of the astronomical telescope. The method is used in an optical imaging subsystem equipped with a CCD in the observation equipment, and the pointing measurement method can collect the CCD image in real time and the observation time and pointing corresponding to the CCD image. And according to the collected telescope CCD image, the time corresponding to the CCD image and the initial pointing of the observation equipment, the star image on the CCD image is detected, so as to accurately determine the direction of the equipment. This method is a very good real-time pointing measurement system. Background technique [0002] In many fields such as scientific research and engineering, there are many observation devices. Because there are a series of errors in the manufacturing, assembly and installation of these observation equipment, the pointing error must be corrected be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C1/00G01C11/04G01M11/00
Inventor 张晓祥高昕
Owner ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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