Paper
1 July 1990 Several proposals for large advanced astronomical telescope
Pin-Zhong Ma
Author Affiliations +
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.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Pin-Zhong Ma "Several proposals for large advanced astronomical telescope", Proc. SPIE 1236, Advanced Technology Optical Telescopes IV, (1 July 1990); https://doi.org/10.1117/12.19256
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KEYWORDS
Mirrors

Telescopes

Interferometers

Optical telescopes

Prisms

Servomechanisms

Space telescopes

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