A Method for Testing and Measuring the Flexure of the Tube of the Low-Latitude Meridian Circle

Fan Yu; Mao Wei; Li Zhiming

Publications of the Yunnan Observatory > 1984 > 0(1): 38-42.

Fan Yu, Mao Wei, Li Zhiming. A Method for Testing and Measuring the Flexure of the Tube of the Low-Latitude Meridian Circle[J]. Publications of the Yunnan Observatory, 1984, (1): 38-42.

Citation:

Fan Yu, Mao Wei, Li Zhiming. A Method for Testing and Measuring the Flexure of the Tube of the Low-Latitude Meridian Circle[J]. Publications of the Yunnan Observatory, 1984, (1): 38-42.

Citation:

Fan Yu, Mao Wei, Li Zhiming. A Method for Testing and Measuring the Flexure of the Tube of the Low-Latitude Meridian Circle[J]. Publications of the Yunnan Observatory, 1984, (1): 38-42.

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A Method for Testing and Measuring the Flexure of the Tube of the Low-Latitude Meridian Circle

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Received Date: September 01, 1983
Published Date: June 14, 1984

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Abstract

Abstract

In this article we propose a method of determining changes in the line of sight of the telescope caused by the factors,such as the flexure of the tube,the gravitational displacement of the main mirror,etc.,by utilizing an advantageous condition that the horizontal axis of a low-latitude meridian circle be turned at 180°in the course of observations.It is helpful to use this method to improve the accuracy of determing right ascensions.

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