Dr. Richard J. Harms Profile

Dr. Richard J. Harms

President and Chief Executive Officer at RJH Scientific Inc

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Publications (7)

Proceedings Article | 14 November 2001 Paper

Thin film multilayer fan-beam x-ray monochromator

Richard Harms, Peter Serlemitsos, Scott Owens

Proceedings Volume 4501, (2001) https://doi.org/10.1117/12.448495

KEYWORDS: X-rays, Mirrors, Diagnostics, Silicon, Multilayers, Radiology, X-ray sources, Computer aided design, Monochromators, Deep reactive ion etching

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Proceedings Article | 18 July 2000 Paper

Development of segmented x-ray mirrors for Constellation-X

Robert Petre, Carl Chen, Lester Cohen, David Content, Richard Harms, Glen Monnelly, Timo Saha, Mark Schattenburg, Peter Serlemitsos, William Zhang

Proceedings Volume 4012, (2000) https://doi.org/10.1117/12.391572

KEYWORDS: Mirrors, Reflectors, Epoxies, Glasses, X-rays, Beryllium, Segmented mirrors, Spatial resolution, Silicon, Optical alignment

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Proceedings Article | 29 September 1999 Paper

Segmented x-ray mirror development for Constellation-X

Robert Petre, Carl Chen, Lester Cohen, David Content, Richard Harms, Olivier Mongrard, Glen Monnelly, Timo Saha, Mark Schattenburg, Peter Serlemitsos, William Zhang

Proceedings Volume 3766, (1999) https://doi.org/10.1117/12.363639

KEYWORDS: Mirrors, Reflectors, Glasses, Epoxies, Segmented mirrors, Spatial resolution, Aluminum, X-rays, Optical alignment, Metals

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Proceedings Article | 1 June 1994 Paper

Predicted scattering characteristics of the Hubble Space Telescope/COSTAR/Faint Object Spectrograph

Frank Bartko, Richard Harms, Holland Ford, George Hartig, Geoffrey Burks

Proceedings Volume 2198, (1994) https://doi.org/10.1117/12.176684

KEYWORDS: Mirrors, Scattering, Space telescopes, Data acquisition, Point spread functions, Sensors, Telescopes, Target acquisition, Hubble Space Telescope, Spectrographs

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Proceedings Article | 1 June 1994 Paper

Science in crowded fields with Hubble Space Telescope Faint Object Spectrograph plus COSTAR

Richard Harms, Holland Ford, George Hartig, Frank Bartko

Proceedings Volume 2198, (1994) https://doi.org/10.1117/12.176809

KEYWORDS: Galactic astronomy, Spectroscopy, Stars, Spatial resolution, Signal to noise ratio, Velocity measurements, Spectrographs, Imaging spectroscopy, Spectroscopes, Cameras

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We describe plans for several science programs in crowded fields using the faint object spectrograph (FOS) which rely critically on the enhanced angular resolution provided by the COSTAR corrective optics. Based on ground-based calibration of the COSTAR and on-orbit performance of the FOS, the anticipated performance of the COSTAR+/FOS should allow many important scientific studies to be completed which have had to be postponed due to the spherical aberration in the HST primary mirror. Particularly impacted by spherical aberration, and thus able to benefit most dramatically from the installation of COSTAR, are spectroscopic observations with FOS in crowded fields. Many of the most important science goals for the FOS instrument involve observations of crowded fields, for which the restored high- angular resolution of HST is essential - not only to isolate features of small angular extent, but also to eliminate optical contamination from the surrounding luminous regions. Spectroscopy of the nuclei of galaxies to obtain rotation curves and velocity dispersions which might reveal the presence of central black holes benefits dramatically from the enhanced angular resolution of HST as restored by COSTAR. We present models based on our current understanding of the dynamics of galaxy nuclei to illustrate the dramatic improvement in sensitivity in searching for black holes made possible by restoring HST's image quality. Two other categories of scientific investigations in crowded fields which will benefit greatly from restoring HST's image quality are spectroscopy of the luminous material (presumably distant galaxies) surrounding quasistellar objects, and spectroscopy of individual stars in globular clusters. The promise of finally being able to carry out these exciting scientific programs with the FOS on the restored HST explains why our team of scientists, along with many other astronomers, look forward to using the restored HST to carry out the scientific investigations for which it was originally intended.

Proceedings Article | 1 November 1993 Paper

Scattered light characteristics of the Hubble Space Telescope Faint Object Spectrograph

Frank Bartko, Geoffrey Burks, Gerry Kriss, Arthur Davidsen, Ross Cohen, Vesa Junkkarinen, Ron Lyons, Richard Harms

Proceedings Volume 1945, (1993) https://doi.org/10.1117/12.158767

KEYWORDS: Stars, Scattering, Ultraviolet radiation, Spectrographs, Hubble Space Telescope, Telescopes, Light scattering, Space telescopes, Point spread functions, Mirrors

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Proceedings Article | 1 September 1991 Paper

Faint object spectrograph early performance

Richard Harms, John Fitch

Proceedings Volume 1494, (1991) https://doi.org/10.1117/12.46713

KEYWORDS: Monochromatic aberrations, Spectral resolution, Space telescopes, Galactic astronomy, Astronomical telescopes, Aerospace engineering, Spectroscopy, Target acquisition, Magnetism, Mirrors

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Showing 5 of 7 publications

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