A computer-controlled x-y offset guiding stage for the MLRS

Details A computer-controlled x-y offset guiding stage for the MLRS A computer-controlled x-y offset guiding stage for the MLRS

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993lri..worku....s&link_type=abstract

In NASA. Goddard Space Flight Center, Eighth International Workshop on Laser Ranging Instrumentation 5 p (SEE N94-15552 03-19)

Computer Science

1

Laser Range Finders, Numerical Control, Observatories, Optical Tracking, Rangefinding, Retroreflectors, Satellite Tracking, Telescopes, Artificial Satellites, Laser Targets, Lunar Satellites, Satellite Instruments

Scientific paper

The MLRS has experienced excellent success in its lunar and artificial satellite laser ranging operations during its many years of operation, in spite of its relatively small 'receive' aperture. We continue to strive, however, for a greater volume of data, together with better accuracy and precision. We have just now completed the design, construction, and implementation of a computer controlled x-y offset guiding stage for the MLRS, analogous to the manual one that had been a part of the original 2.7-m lunar laser ranging system on Mt. Locke at McDonald Observatory. In the past, we had been hampered by the lack of a satisfactory hardware design which could fit within the very cramped quarters of the MLRS telescope's tail piece. Recently, with funding support from the U.S. Naval Observatory and the design and construction expertise of DFM Engineering, Inc., a satisfactory instrument has been specified, designed, built, and installed. This instrument will greatly expand MLRS observational opportunities by allowing the observing crews to actively guide on visible off axis lunar surface features or background stars while the on-axis lunar surface retroreflector targets are in the dark. This paper describes this instrument and its present implementation at the MLRS.

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