Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974tsbb.nasa..120k&link_type=abstract
In its Telescope Systems for Balloon-Borne Res. p 120-135 (SEE N75-12735 03-74)
Astronomy and Astrophysics
Astronomy
Astronomy, Balloon-Borne Instruments, Gyrostabilizers, High Altitude Balloons, Infrared Detectors, Star Trackers, Telescopes, Equipment Specifications, Optical Equipment, Product Development, Remote Control, Systems Engineering
Scientific paper
A balloon-borne telescope system designed for astronomical observations at infrared wavelengths is discussed. The telescope is gyro-stabilized with updated pointing information derived from television, star tracker, or ground commands. The television system furnishes both course and fine acquisition after initial orientation using a pair of fluxgate servo compasses. Command and control is by a UHF link with 256 commands available. Scientific and engineering data are telemetered to the ground station via narrow band F.M. in the L band. The ground station displays all scientific, engineering and status information during the flights and records the command and telemetry digital bit stream for detailed analysis. The AIROscope telescope has a 28-inch diameter primary mirror and Dall-Kirkham optics. The beam is modulated by oscillating a secondary mirror at 11 or 25 Hz with provision for left or right beam fixed positions by command.
Koontz O. L.
Scott S. G.
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