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1 September 1972 Laser Interferometric Alignment Sensor For The Large Space Telescope (LST)
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The Large Space Telescope(I) will have a 10-foot diameter diffraction-limited primary mirror with theoretical spatial resolving capability of .04 arcsecond in the visible light range. Its secondary mirror, approximately 3 feet in diameter, will be some 20 to 30 feet forward of the primary depending on the final optical configuration. The alignment of the secondary to the primary is critical to the performance of a diffraction-limited optical system and is an important problem area in development of the instrument. The tube structure defining the primary-secondary relationship will not be sufficiently rigid to maintain the required alignment precision in the face of thermal and mechanical disturbances. Accordingly, the secondary will be articulated relative to the structure to compensate for tube deformations.
© (1972) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Sol L. Morrison "Laser Interferometric Alignment Sensor For The Large Space Telescope (LST)", Proc. SPIE 0028, Instrumentation in Astronomy I, (1 September 1972);

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