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  • 1
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    Improvements in Ross type astrometric objectives (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: It is shown that aspheric deformations of the first and fourth elements of the four element Ross objective can be introduced to permit one to obtain improved color corrections for astrometric purposes. The usual monochromatic aberrations are as well corrected as for the standard Ross lens. In addition, one can eliminate or reduce additional aberrations, such as secondary spectrum, chromatic spherical aberration, chromatic coma and chromatic distortion. The resulting objectives are suitable for use as intermediate and long focus astrometric objectives covering large angle fields.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Univ. of South Fla. Conf. on Phot. Astrometric Technique; p 61-84
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  • 2
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    'Oxide-free' tip for scanning tunneling microscopy (1987)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: A new tip for scanning tunneling microscopy and a tip repair procedure that allows one to reproducibly obtain atomic images of highly oriented pyrolytic graphite with previously inoperable tips are reported. The tips are shown to be relatively oxide-free and highly resistant to oxidation. The tips are fabricated with graphite by two distinct methods.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Applied Physics Letters (ISSN 0003-6951); 51; 305-307
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  • 3
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    Microwave measurement of the electron density profile in a supersonic arc jet (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Microwave probe for measuring electron density profile in supersonic arc jet plasma
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: ; 17 (
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  • 4
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    Mathematical models for film sensitivity measurements (1989)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: The quality of the pictorial record developed from photographic material depends on the composition of the material, the procedures used in its exposure and processing, as well as, the nature of the physical and temporal environment extant during the creation of the record. By holding many of the variables fixed, the effect of the two environmental parameters, namely temperature and aging are examined on the characteristic curve of a given film. Polynomial and exponential functions are evaluated as empirical formulas for the characteristic curve, and the sensitivity of derived coefficients to the selected parameters is assessed.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Alabama A & M Univ., NASA-HBCU Space Science and Engineering Research Forum Proceedings; p 69-76
    Format: application/pdf
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  • 5
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    Infrared technology and applications; Proceedings of the Meeting, Cannes, France, November 26-29, 1985 (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The present conference on state-of-the-art IR systems and components technologies and their applications encompasses developments in IR systems design, production technologies, IR component testing, IR systems evaluations, laboratory and industrial applications, and aerospace ranging sensor and surveillance sensor applications. Attention is given to IR zoom lens telescopes, large zinc sulphide windows for airborne applications, thermal imaging system evaluation, minimum resolvable temperature difference measurement methods, industrial use of IR spectroscopy, platinum silicide sensor imagery, and recent developments in laser rangefinders.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: SPIE-590
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  • 6
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    Ranger television camera calibration techniques. (1965)
    In:  Other Sources
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    Publication Date: 2018-12-01
    Description: Shutters, lenses, vidicons, data rates and calibration techniques for TV cameras of Rangers VI, VII, VIII and IX
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
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  • 7
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    Some aspects of hyperaltitude photogrammetry Report no. 1 (1964)
    In:  CASI
    Details
    Publication Date: 2019-05-29
    Description: Photograph interpretation and photogrammetry of hyperaltitude photography - astrodynamic aspects, camera orientation, and location of objects imaged
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-CR-68275 , LR-17491
    Format: application/pdf
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  • 8
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    Passive fetal monitoring sensor (1992)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: An ambulatory, passive sensor for use in a fetal monitoring system is discussed. The invention is comprised of a piezoelectric polymer film, combined with a metallic mounting plate fastened to a belt, and electrically connected to a signal processing unit by means of a shielded cable. The purpose of the sensor is to receive pressure pulses emitted by a fetus inside an expectant mother. Additionally, the monitor will filter out pressure pulses arising from other sources, such as the maternal heart.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
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  • 9
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    Imaging Schwarzschild multilayer X-ray microscope (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: We have designed, analyzed, fabricated, and tested Schwarzschild multilayer X-ray microscopes. These instruments use flow-polished Zerodur mirror substrates which have been coated with multilayers optimized for maximum reflectivity at normal incidence at 135 A. They are being developed as prototypes for the Water Window Imaging X-Ray Microscope. Ultrasmooth mirror sets of hemlite grade sapphire have been fabricated and they are now being coated with multilayers to reflect soft X-rays at 38 A, within the biologically important 'water window'. In this paper, we discuss the fabrication of the microscope optics and structural components as well as the mounting of the optics and assembly of the microscopes. We also describe the optical alignment, interferometric and visible light testing of the microscopes, present interferometrically measured performance data, and provide the first results of optical imaging tests.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: In: Multilayer and grazing incidence X-ray(EUV optics for astronomy and projection lithography; Proceedings of the Meeting, San Diego, CA, July 19-22, 1992 (A93-39601 15-74); p. 660-673.
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  • 10
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    Three-dimensional stylus profilometry (1982)
    In:  Other Sources
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    Publication Date: 2019-06-28
    Description: The method of three-dimensional stylus profilometry is presented together with a computer-based system for transforming the surface topography of a specimen into an intensity image. Examples are given in which intensity images obtained by stylus profilometry are compared with scanning electron micrographs and two other representations of the stylus data. The comparisons are made for three types of surface irregularities: a discrete feature, a periodic profile surface, and a random profile surface. It is shown that stylus profilometry provides high vertical resolution for low sloped surfaces and thus can be useful in revealing features not easily detectable with other methods.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
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