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13 September 2012 MAPS: where have the robots got to?
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Most of the sky is black: picking off the interesting bits is the challenge. By placing pick-off mirrors in the focal plane of an instrument, it is possible to select light from only the desired sub-fields. The Micro Autonomous Positioning System (MAPS) is a method for maneuvering pick-off mirrors into position by giving each mirror its own set of wheels. This paper details the metrology algorithms that are being developed to provide real-time feedback of the robots’ positions. This will be achieved through imaging high-resolution targets on the robots and analysing the power floor on which they move. Early tests show that the imaging system is capable of resolving linear motions of lμm and rotation of <1mrad, for an operating area of 25 x 20 cm.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
W. D. Taylor, H. Schnetler, W. A. Cochrane, M. Black, and S. A. McLay "MAPS: where have the robots got to?", Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 845057 (13 September 2012);

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