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You searched on: Author: Allan Smith

Displaying records 1 to 10 of 18 records.
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1. The Cosmic Infrared Background Experiment (CIBER): The Low Resolution Spectrometer
Published: 5/14/2015
Authors: K. Tsumura, T. Aria, J. Battle, J. Bock, Steven W Brown, A. Cooray, V. Hristov, B. Keating, M. G. Kim, D. H. Lee, L. R. Levenson, Keith R Lykke, P. Mason, T. Matsumoto, S. Matsuura, K. Murata, U. W. Nam, T. Renbarger, Allan W. Smith, I. Sullivan, K. Suzuki, T. Wada, M. Zemcov, U. W. Nam, B. Shultz, I. Sullivan, P. M. Korngut
Abstract: Absolute spectrophotometric measurements of diffuse radiation at 1−2 μm are crucial to our understanding of the radiative content of the Universe from nucleosynthesis since the epoch of reionization, the composition and structure of the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910002

2. Precise Measurement of Lunar Spectral Irradiance at Visible Wavelengths
Series: Journal of Research (NIST JRES)
Report Number: 118.020
Published: 11/12/2013
Authors: Keith R Lykke, John Taylor Woodward IV, Allan W. Smith, Claire Elizabeth Cramer
Abstract: We report a measurement of lunar spectral irradiance with an uncertainty below 1 % from 420 nm to 1000 nm. This measurement uncertainty meets the stability requirement for many climate data records derived from satellite images, including tho ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913841

3. The Cosmic Infrared Background Experiment (CIBER): the Narrow Band Spectrometer
Published: 8/19/2013
Authors: Steven W Brown, Keith R Lykke, Allan W. Smith, P M. Korngut, T. Renbarger, T. Arai, J. Battle, A. Cooray, V. Hristov, B. Keating, M. G. Kims, A. Lanz, D. H. Lee, L. R. Levenson, P. Mason, T. Matsumoto, S. Matsuura, U. W. Niam, B. Shultz, I. Sullivan, K. Tsumura, T. Wada, M. Zemcov
Abstract: We have developed a near-infrared spectrometer designed to measure the absolute intensity of the Solar 854.2 nm Ca II Fraunhofer line, scattered by interplanetary dust, in the Zodiacal light spectrum. Based on the known equivalent line width in the S ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912115

4. Lunar Spectral Irradiance and radiance (LUSI): new instrumentation to characterize the Moon as a space-based radiometric standard
Series: Journal of Research (NIST JRES)
Report Number: 117.011
Published: 7/17/2012
Authors: Allan W. Smith, Steven Ray Lorentz, Raju Vsnu Datla, Thomas C. Stone
Abstract: The need to understand and monitor climate change has led to proposed radiometric accuracy requirements for space-based remote-sensing instruments that are very stringent and currently beyond the reach of many Earth orbiting instruments. A major ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903135

5. Comparison of laser-based and monochromator-based thermodynamic temperature measurements
Published: 3/19/2012
Authors: George P Eppeldauer, Howard W Yoon, Jorge Enrique Neira, Vladimir Khromchenko, Charles E Gibson, Allan W. Smith
Abstract: In this work, we describe the comparisons between the laser-based and monochromator-based radiance responsivity calibrations of a radiation thermometer. The spectral selection of the radiation thermometer is performed using a photopic-response fi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912047

6. Ground-based observatory operations optimized and enhanced by direct atmospheric measurements
Published: 7/22/2010
Authors: John T McGraw, Peter C Zimmer, Azzam Mansour, Dean C Hines, Anthony B Hull, Lisa Rossmann, Daniel C Zirzow, Steven W Brown, Gerald T Fraser, Keith R Lykke, Allan W. Smith, John Taylor Woodward IV, Christopher W Stubbs
Abstract: Earth‰s atmosphere represents a turbulent, turbid refractive element for every ground-based telescope. We describe the significantly enhanced and optimized operation of observatories supported by the combination of a lidar and spectrophotometer that ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906521

7. Spectroradiometric Calibration of Telescopes using Laser Illumination of Flat Field Screens
Published: 7/15/2010
Authors: Steven W Brown, Claire Elizabeth Cramer, Keith R Lykke, Allan W. Smith, John Taylor Woodward IV, Peter Doherty, Emilio Falco, Christopher W Stubbs
Abstract: It is standard practice at many telescopes to take a series of flat field images prior to an observation run. Typically the flat field consists of a screen mounted inside the telescope dome that is uniformly illuminated with a broadband light source ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906058

8. Space-based photometric precision from ground-based telescopes
Published: 7/1/2010
Authors: Peter C Zimmer, John T McGraw, Anthony B Hull, Daniel C Zirzow, Steven W Brown, Claire Elizabeth Cramer, Gerald T Fraser, Keith R Lykke, Allan W. Smith, John Taylor Woodward IV, Christopher W Stubbs, Mark R Ackermann, Dean C Hines
Abstract: Ground-based telescopes supported by lidar and spectrophotometric auxiliary instrumentation can attain space-based precision for all-sky photometry, with uncertainties dominated by fundamental photon counting statistics. Earth‟s atmosphere is a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906522

9. Uncertainty Analysis of Remote Sensing Optical Sensor Data Guiding Principles to Achieve Metrological Consistency
Published: 2/20/2010
Authors: Raju Vsnu Datla, Ruediger Kessel, Allan W. Smith, Raghu N Kacker, D. B. Pollock
Abstract: Climate change monitoring requires long time series radiometric measurements using multiple optical sensors in multiple platforms covering the globe over decades. The problem of achieving traceability to SI units for these measurements is discussed. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=890001

10. Hyperspectral Imager Characterization and Calibration
Published: 12/1/2009
Authors: John Taylor Woodward IV, Steven W Brown, Allan W. Smith, Keith R Lykke
Abstract: Current radiometric calibration standards, specifically blackbody and lamp-based optical radiation sources, produce spatially, spectrally, and temporally simple scenes. Hyperspectral imaging instruments, which in-practice view spatially, spectrally, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903023



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