Grating read head adjusting device

Abstract

The invention discloses a grating read head adjusting device, the adjusting device rotates with three mutually perpendicular A-A' axis, B-B' axis and C-C' axis serving as a rotating axis; wherein the A-A' axis and the B-B' axis are in the same plane with the grating read head, the C-C' axis passes through the intersection of the A-A' axis and the B-B' axis, and is perpendicular to the plane where A-A' axis and the B-B' axis are in; the direction of the C-C' axis can be adjusted translationally, so that the grating read head keeps a provided distance from the grating, the grating read head is mounted in a rotation mode around the A-A' axis, the B-B' axis and the C-C' axis, so that the posture of the grating read head can be adjusted to the best state; the read head can be adjusted translationally along the direction of the A-A' axis, so that the center of the grating read head is of the same height with the midpoint of the grating scribed line, and five dimension adjustment of the grating read head is achieved. According to the grating read head adjusting device, the adjustment and stability of the grating read head gesture is remarkably convenient, and the operation of the ascension angle measuring system of the 2.16 meter telescope in our county is stable. Due to the five dimension adjusting device, breakdown of the ascension axis angle measuring system caused by the unstable gesture of the grating read head is overcome, and the utilization ratio of the telescope is improved.

Description

technical field [0001] The invention relates to precision machinery, in particular to an attitude adjustment device for controlling the grating readout head of an astronomical telescope. Background technique [0002] The grating readout head is the detection part for reading out the grating lines. It has a readout window facing the grating. Excellent raster signal output. [0003] When transforming the right ascension angle measurement system of the 2.16-meter telescope in my country, the attitude of the grating readout head was adjusted for convenience. The adjustment device of the original grating readout head is too simple to adjust the readout head to the best state, and the angle measurement system of the telescope cannot work stably. It was later discovered that there is a six-dimensional adjustment device for the readout head, but it is not suitable for use on a 2.16-meter telescope. A suitable adjustment bracket cannot be purchased on the market. Because its grat...

AI Technical Summary

Problems solved by technology

Before the five-dimensional read head adjustment device of the present invention is used, the original read head adjustment device is difficult or even impossible to adjust the read head to the best state, and cannot stabilize the read head attitude, and the change in the read head attitude often makes the angle measurement system not work normally

need frequent adjustment

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