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Proceedings Paper

Several proposals for large advanced astronomical telescope
Author(s): Pin-Zhong Ma
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Paper Abstract

A 16 meter optical telescope is described. The telescope tube has a large and heavy truss that creates deformation; when the telescope tube is rotating, four servos push forward or pull back the main mirror truss to automatically compensate for the deformation. To obtain high image quality and tracking and pointing accuracy, dynamic deflection must be measured and the measuring value should be fed back to servo motors to provide automatic compensation until the system deflection is zero. The interferometer of the automatic compensation system is fixed at the rear of the main mirror to avoid influencing the main optical path. Details are discussed on the measurement of the relative deflection, the honeycomb mirror, and a scheme for main mirror measurement.

Paper Details

Date Published: 1 July 1990
PDF: 6 pages
Proc. SPIE 1236, Advanced Technology Optical Telescopes IV, (1 July 1990); doi: 10.1117/12.19256
Show Author Affiliations
Pin-Zhong Ma, Nanjing Astronomical Instrument Factory (China)

Published in SPIE Proceedings Vol. 1236:
Advanced Technology Optical Telescopes IV
Lawrence D. Barr, Editor(s)

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