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Author: allan smith
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1. Absolute Flux Calibration of Stars; Calibration of the Reference Telescope
Published: 6/2/2009
Authors: Allan W. Smith, John Taylor Woodward IV, Colleen Alana Jenkins, Steven W Brown, Keith R Lykke
Abstract: Absolute stellar photometry is based on 1970s terrestrial measurements of the star Vega with instruments calibrated using the Planckian radiance from a Cu fixed-point blackbody. Significant advances in absolute radiometry have been made in the last 3 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900900

2. 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

3. 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

4. Improved Broadband Blackbody Calibrations at NIST for Low-Background Infrared Applications
Published: 2/1/2003
Authors: Adriaan Carl Linus Carter, Timothy Michael Jung, Allan W. Smith, Steven Ray Lorentz, Raju Vsnu Datla
Abstract: The Low Background Infrared (LBIR) facility at The National Institute of Standards and Technology (NIST) has continued to develop its facilities and knowledge base to meet the needs of the infrared community. Improvements in refrigeration capability ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841632

5. Low Background Temperature Calibration of Infrared Blackbodies
Published: 3/23/2006
Authors: Adriaan Carl Linus Carter, Raju Vsnu Datla, Timothy Michael Jung, Allan W. Smith, James A Fedchak
Abstract: The Low Background Infrared (LBIR) facility at the National Institute of Standards and Technology (NIST) has performed 10 calibrations of low-background blackbodies since 2001 when the calibration facility and calibration method for low-background bl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840979

6. Low-background temperature calibration of infrared blackbodies
Published: 1/1/2006
Authors: Adriaan Carl Linus Carter, Raju Vsnu Datla, J A Fedchak, Timothy Michael Jung, Allan W. Smith
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101419

7. 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

8. 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
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 those f ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913841

9. Radiometer standard for absolute responsivity calibrations from 950 nm to 1650 nm with 0.05% (k = 2) uncertainty
Published: 6/2/2009
Authors: George P Eppeldauer, Howard W Yoon, Yuqin Zong, Thomas C Larason, Allan W. Smith, M. Racz
Abstract: A sphere-input transfer-standard detector has been developed to calibrate detectors and radiometers for absolute spectral power, irradiance, and radiance responsivity in the near-IR range with uncertainties similar to those of silicon trap-detector c ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900973

10. Radiometrically Deducing Aperture Sizes
Published: 2/1/2003
Authors: Allan W. Smith, Adriaan Carl Linus Carter, Steven Ray Lorentz, Timothy Michael Jung, Raju Vsnu Datla
Abstract: The desire for high-accuracy infrared sources suitable for low-background seeker/tracker calibrations pushes the limits of absolute cryogenic radiometry and blackbody design. It remains difficult to calibrate a blackbody at flux levels below 1 nW/cm ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841647



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