Rocket instrument for far-UV spectrophotometry of faint astronomical objects

Computer Science – Sound

Scientific paper

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Far Ultraviolet Radiation, Rocket-Borne Instruments, Stellar Spectrophotometry, Telescopes, Ultraviolet Spectrophotometers, Calibrating, Gratings (Spectra), Photosensitivity, Remote Control, Sounding Rockets, Ultraviolet Astronomy

Scientific paper

A sensitive sounding rocket instrument for moderate (about 10-A) resolution far-UV (1160-1750-A) spectrophotometry of faint astronomical objects has been developed. The instrument employes a photon-counting microchannel plate imaging detector and a concave grating spectrograph behind a 40-cm Dall-Kirkham telescope. A unique remote-control pointing system, incorporating an SIT vidicon aspect camera, two star trackers, and a tone-encoded command telemetry link, permits the telescope to be oriented to within 5 arc sec of any target for which suitable guide stars can be found. The design, construction, calibration, and flight performance of the instrument are discussed.

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