Zobrazeno 1 - 10
of 11
pro vyhledávání: '"David Vaughnn"'
Autor:
Allen Crane, Tyler Evans, Matthew R. Bolcar, Patrick L. Thompson, David Vaughnn, Bente Eegholm, Luis Ramos-Izquierdo, John Chambers, Eric Mentzell, Samuel E. Hetherington, John G. Hagopian
Publikováno v:
Earth Observing Systems
The sole instrument on NASA’s ICESat-2 spacecraft shown in Figure 1 will be the Advanced Topographic Laser Altimeter System (ATLAS)1. The ATLAS is a Light Detection and Ranging (LIDAR) instrument; it measures the time of flight of the six transmitt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14d91bcbfb9f0488d9519e71d19694a9
https://doi.org/10.1117/12.2240241
https://doi.org/10.1117/12.2240241
Autor:
Patrick L. Thompson, David Vaughnn, Tyler Evans, Bente Eegholm, Erich de Leon, Matt Bolcar, John G. Hagopian
Publikováno v:
2015 IEEE Aerospace Conference.
Many lessons were learned in the comprehensive testing of the one meter Beryllium flight telescope for the ICESat-2 mission. This paper will focus on testing areas of encircled energy analysis, plate scale measurements, and boresight alignment for al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1327c0e2715b3f5fc46c5ece176b64fa
https://doi.org/10.1109/aero.2015.7119007
https://doi.org/10.1109/aero.2015.7119007
Autor:
Bert Pasquale, David Content, Jeffery Kruk, David Vaughnn, Qian Gong, Joseph Howard, Alden Jurling, Len Seals, Eric Mentzell, Nerses Armani, Gary Kuan
Publikováno v:
International Optical Design Conference 2014.
The WFIRSTAFTA Wide-Field Infrared Survey Telescope TMA optical design provides 0.28-sq FOV at 0.11 pixel scale, operating between 0.6 2.4m, including a spectrograph mode (1.3-1.95m.) An IFU provides a discrete 3x3.15 field at 0.15 sampling.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19bd4ffd5791dff914013b5cb5b3901e
https://doi.org/10.1117/12.2177847
https://doi.org/10.1117/12.2177847
Autor:
Robert Mark, David Vaughnn
Publikováno v:
SPIE Proceedings.
For the purpose of this paper, actual field curvature is the field dependent departure of the location of best image quality from a nominal surface along the direction of the optical axis. Usually this nominal surface is a plane where an image is for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eaaa1f4f95ef9e903c7459929dae6166
https://doi.org/10.1117/12.681436
https://doi.org/10.1117/12.681436
Autor:
Gary A. Poczulp, David Vaughnn
Publikováno v:
SPIE Proceedings.
Filters are employed in optical systems to reduce stray light and block unwanted spectra. However, common filter materials are susceptible to solarization, a bulk degradation wherein the material properties change when exposed to UV radiation. A new
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::638d4ae1412653a90571f44cbdc625fc
https://doi.org/10.1117/12.555016
https://doi.org/10.1117/12.555016
Publikováno v:
SPIE Proceedings.
The concept and design for a novel four-quadrant position and focus error sensor are presented. Expected performance and theory of operation of the astigmatic focus sensor are presented. Features include wide field of view, broad wavelength coverage,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::187519f76d52a3d77a2d145a9c08f05f
https://doi.org/10.1117/12.395460
https://doi.org/10.1117/12.395460
Publikováno v:
Optical Astronomical Instrumentation.
The Kitt Peak Mayall 4-m telescope required a new prime focus corrector having a flat focal plane covering 36 arcmin on a side (51 arcmin diagonal) to accommodate the Mosaic 8K X 8K CCD system. The scientific requirements for the new corrector includ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a547437c532713ac70af9d526b6355a
https://doi.org/10.1117/12.316845
https://doi.org/10.1117/12.316845
Autor:
David Vaughnn
Publikováno v:
SPIE Proceedings.
A number of common building materials and finishes are found to be phosphorescent. To avoid this as a source of stray light, it is suggested that with sensitive low-light level systems, material selection be done judiciously and with cognizance of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bdc1a4efdab7b543885d18d82eed4cc8
https://doi.org/10.1117/12.258333
https://doi.org/10.1117/12.258333
Autor:
Jay A. Tome, David Vaughnn
Publikováno v:
SPIE Proceedings.
Grazing incidence reflections as a source of stray light are a problem which continues to beleaguer optical systems and instrumentation. These reflections tend to be specular and are a primary cause of ghosting. Traditional means of blackening (absor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ecf125409e9a237c87faea6c567152ad
https://doi.org/10.1117/12.258332
https://doi.org/10.1117/12.258332
Autor:
David Vaughnn
Publikováno v:
Instrumentation in Astronomy VIII.
Fiber-fed spectrographs have now been employed in astronomy for several years. They offer the principle advantages of increasing the number of objects with which simultaneous spectra may be recorded, better stability, an improvement in versatility, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42bcaae0b0314046713df303b44c8a41
https://doi.org/10.1117/12.176757
https://doi.org/10.1117/12.176757