System for tracking sun both in elevation and azimuth; system weighs approximately 125 lb and is capable of "pointing" as much as 20 lb of payload at predetermined position in sky; power requirements are 20 w; accuracy in pointing of plus or minus 15 min of arc has been achieved; test flights at over 10,000 ft.
Balloon-borne system for tracking sun
Rev Sci Instruments
Review of Scientific Instruments ; 27 , n 6
1956
5 pages
Article (Journal)
English
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