31 December 2010 The experimental research of the systems for measuring the angle rotations and line shifts of the large aperture radio-telescope components
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Proceedings Volume 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation; 75443P (2010) https://doi.org/10.1117/12.885604
Event: Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 2010, Hangzhou, China
Abstract
The main mirror construction of the radiotelescope for the millimetre wave range requires to measure the line deformation of mirror's surface and shifts of the secondary mirror relatively main mirror. There is a necessity to construct the new radio-telescope RT-70 Suffa (Russia). The 3-D parabola main mirror of this radio telescope has a diameter 70 meters, and the elliptical secondary mirror with the diameter 3 meters are placed on the distance 21 meter relatively main mirror. Following issues dealing with this problem are described in this article: 1) the possibility of the design of deformation measurement system based on triangular method 2) the new scheme of optic-electronic measurement system. The great attention during the research was paid to the experimental approval of the theoretical results. The experimental setup of the described system had the following characteristics: infrared emission diode AL107B by power 15 mWt as sources of radiation; the objective by the focal length 450 mm as aperture of receiver video-camera, the CMOS matrix receiver by type OV05620 Color CMOS QSXGA with 2592*1944 pixels and one pixel size (2.2*2.2) μm2 produced OmniVision as image analyzer . The computer simulation error and the experimental error measurement was 0.1 mm at the
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Igor Konyakhin, Igor Konyakhin, Alexandr Timofeev, Alexandr Timofeev, Alexandr Usik, Alexandr Usik, Dmitry Zhukov, Dmitry Zhukov, "The experimental research of the systems for measuring the angle rotations and line shifts of the large aperture radio-telescope components", Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75443P (31 December 2010); doi: 10.1117/12.885604; https://doi.org/10.1117/12.885604
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