NDLI: Three-meter balloon-borne telescope

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Three-meter balloon-borne telescope

Content Provider	NASA Technical Reports Server (NTRS)
Author	Harper, D. A. Hoffmann, William F. Fazio, G. G.
Copyright Year	1988
Description	The Three-Meter Balloon-Borne Telescope is planned as a general purpose facility for making far-infrared and submillimeter astronomical observations from the stratosphere. It will operate throughout the spectral range 30 microns to 1 millimeter which is largely obscurred from the ground. The design is an f/13.5 Cassegrain telescope with an f/1.33 3-meter primary mirror supported with a 3-axis gimbal and stabilization system. The overall structure is 8.0 m high by 5.5 m in width by 4.0 m in depth and weighs 2000 kg. This low weight is achieved through the use of an ultra lightweight primary mirror of composite construction. Pointing and stabilization are achieved with television monitoring of the star field, flex-pivot bearing supports, gyroscopes, and magnetically levitated reaction wheels. Two instruments will be carried on each flight; generally a photometric camera and a spectrometer. A 64-element bolometer array photometric camera operating from 30 to 300 microns is planned as part of the facility. Additional instruments will be derived from KAO and other development programs.
File Size	142485
Page Count	3
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19900004174
Archival Resource Key	ark:/13960/t5r837m2t
Language	English
Publisher Date	1988-08-15
Access Restriction	Open
Subject Keyword	Optics Far Infrared Radiation Balloon-borne Instruments Spectrometers High Altitude Balloons Telescopes Cameras Infrared Astronomy Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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