Glancing incidence optics for X-ray and ultraviolet astronomy.Glancing incidence telescopes of the kind first described by Wolter have now been physically realized, so that it is possible to obtain high-resolution images of celestial objects at all wavelengths greater than about 3 A. The GSFC-MSFC X-ray telescope for the Apollo telescope mount uses Wolter type 1 optics and is capable of forming images of the sun in the 8-70 A region with spatial resolution of the order of one arc second. The GSFC extreme ultraviolet spectroheliometer for OSO H uses type 2 optics and can obtain images of the sun in spectral lines in the 170-400 A region with a spatial resolution of about ten arc seconds. Theoretical (ray trace) and laboratory data on these systems are presented.
Document ID
19720029379
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Underwood, J. H.
Neupert, W. M. (NASA Goddard Space Flight Center Solar Plasmas Branch, Greenbelt, Md., United States)
Hoover, R. B. (NASA Marshall Space Flight Center Astronomics Laboratory, Huntsville, Ala., United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1971
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: New techniques in space astronomy; Symposium