NDLI: Hardi: a high angular resolution deployable interferometer for space

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Hardi: a high angular resolution deployable interferometer for space

Content Provider	NASA Technical Reports Server (NTRS)
Author	Bely, Pierre Y. Weigelt, Gerd Roddier Sr., Francois Burrows, Christopher
Copyright Year	1992
Description	We describe here a proposed orbiting interferometer covering the UV, visible, and near-IR spectral ranges. With a 6-m baseline and a collecting area equivalent to about a 1.4 m diameter full aperture, this instrument will offer significant improvements in resolution over the Hubble Space Telescope, and complement the new generation of ground-based interferometers with much better limiting magnitude and spectral coverage. On the other hand, it has been designed as a considerably less ambitious project (one launch) than other current proposals. We believe that this concept is feasible given current technological capabilities, yet would serve to prove the concepts necessary for the much larger systems that must eventually be flown. The interferometer is of the Fizeau type. It therefore has a much larger field (for guiding) better UV throughout (only 4 surfaces) than phased arrays. Optimize aperture configurations and ideas for the cophasing and coalignment system are presented. The interferometer would be placed in a geosynchronous or sunsynchronous orbit to minimize thermal and mechanical disturbances and to maximize observing efficiency.
File Size	476551
Page Count	13
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19930004400
Archival Resource Key	ark:/13960/t13n72n0j
Language	English
Publisher Date	1992-11-01
Access Restriction	Open
Subject Keyword	Astronomy Near Infrared Radiation Stellar Spectra Phased Arrays High Resolution Angular Resolution Ultraviolet Spectra Hubble Space Telescope Apertures Oso Geosynchronous Orbits Interferometers 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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