The new large radio telescope RT-70 (Uzbekistan, Suffa) requires controlling the linear deformations of its primary mirror. Following issues dealing with this problem are described in this article: 1) the possibility to design measurement system based on stereoscopic scheme for the control of primary mirror’s linear deformations, 2) using the approximation of a parabolic surface by the method of least squares for measurement the coordinates of control elements placed on the primary mirror. It is shown the possibility of assessing the distance to the control points using parameters in equation of a parabolic surface. Information about spatial position of special "stereoscopic" control points is used to calculate the position of all ordinary control points on primary mirror of radio telescope. The results of numerical experiments show that approximation error of paraboloid parameters proporti

Date Published: 31 January 2013
PDF: 6 pages
Proc. SPIE 8759, Eighth International Symposium on Precision Engineering Measurement and Instrumentation, 875939 (31 January 2013); doi: 10.1117/12.2014439

Published in SPIE Proceedings Vol. 8759:
Eighth International Symposium on Precision Engineering Measurement and Instrumentation
Jie Lin, Editor(s)