NASA NTRS · 19790014371
A two-axis pointing system for an orbiting astronomical instrument
Abstract
The system described was built for incorporation into a solar flare X-ray instrument due to be orbited as one of a number of instruments on the NASA Solar Maximum Mission (SMM) satellite in late 1979. It enables the instrument to be rotated about 2 mutually perpendicular axes in 5 arc-second steps within a range of 7 arc-minutes, thus giving the instrument the capability to map areas of the sun.
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Turner, R. F., Firth, J. G.. 1979-01-01. A two-axis pointing system for an orbiting astronomical instrument. https://ntrs.nasa.gov/citations/19790014371
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