Zobrazeno 1 - 10
of 10
pro vyhledávání: '"John D. Mangus"'
Publikováno v:
Applied optics. 19(13)
A concave paraboloid of revolution has been successfully replicated. Replication is done in two steps for which two aluminum forms are made. One form is a convex parabola on which the first generation replica is formed, and the other is a concave par
Autor:
J. H. Underwood, John D. Mangus
Publikováno v:
Applied optics. 8(1)
The optical design of a Wolter type 1 glancing incidence x-ray telescope for the wavelength region 6-100 A is described. The theoretical performance of the instrument is evaluated by ray tracing. The results of laboratory and rocket flight tests on a
Autor:
David N. Jacobson, Charles M. Perrygo, James H. Burge, Andrew E. Lowman, R. Burg, Babak Saif, Joseph M. Geary, Pam Davila, John G. Hagopian, Pierre Y. Bely, John D. Mangus, W. Scott Smith, James C. Wyant, David C. Redding, Steven A. Macenka, Ritva A. M. Keski-Kuha
Publikováno v:
SPIE Proceedings.
An Integrated Product Team (IPT) was formed to develop a detailed concept for optical test methodology for testing of the NGST individual primary, secondary and tertiary mirrors and the full telescope system on the ground. Optical testing is a signif
Autor:
John D. Mangus, Charles M. Fleetwood
Publikováno v:
Optical Engineering. 13
A technique is described for use in the fabrication of glancing incidence telescopes which operate at large grazing angles (i.e., 8 to 15 degrees). Precision conic section plunge laps are used in a controlled grinding procedure to initially generate
Autor:
John D. Mangus
Publikováno v:
SPIE Proceedings.
Spaceflight, stellar pointing telescopes require baffle systems to define the field of view and protect this observational area from stray and scattered light. In the case of near normal incidence telescope systems, the problem consists in controllin
Autor:
Timo T. Saha, John D. Mangus
Publikováno v:
Applied Optics. 25:1744
The focal shift of the Wolter type II telescope, a glancing incidence analog of the normal incidence Cassegrain telescope, due to the despacing of the secondary with respect to the primary, is analyzed. The location of the rms best focus on the optic
Publikováno v:
Applied Optics. 1:431
A high-resolution infrared spectroscopic system consisting of a large Littrow-type grating monochromator followed by a prism order-sorting system is described. The system has been designed to provide sufficient radiant energy per spectral pass band s
Autor:
John D. Mangus, Kenneth Hallam
Publikováno v:
Japanese Journal of Applied Physics. 3:482
An astronomical Spectrophotometer is described which was designed for use on OSOB, the second U.S. Orbiting Solar Observatory. The Spectrophotometer is intended to analyze the ultraviolet emission from stars and nebulae. The entrance slit of the Spec
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Akademický článek
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