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Title: Visible/infrared radiometric calibration station

Abstract

We have begun construction of a visible/infrared radiometric calibration station that will allow for absolute calibration of optical and IR remote sensing instruments with clear apertures less than 16 inches in diameter in a vacuum environment. The calibration station broadband sources will be calibrated at the National Institute of Standards and Technology (NIST) and allow for traceable absolute radiometric calibration to within {plus_minus}3% in the visible and near IR (0.4--2.5 {mu}m), and less than {plus_minus}1% in the infrared, up to 12 {mu}m. Capabilities for placing diffraction limited images or for sensor full-field flooding will exist. The facility will also include the calibration of polarization and spectral effects, spatial resolution, field of view performance, and wavefront characterization. The configuration of the vacuum calibration station consists of an off-axis 21 inch, f/3.2, parabolic collimator with a scanning fold flat in collimated space. The sources are placed, via mechanisms to be described, at the focal plane of the off-axis parabola. Vacuum system pressure will be in the 10{sup {minus}6} Torr range. The broadband white-light source is a custom design by LANL with guidance from Labsphere Inc. The continuous operating radiance of the integrating sphere will be from 0.0--0.006 W/cm{sup 2}/Sr/{mu}m (upper level quotedmore » for {approximately}500 nm wavelength). The blackbody source is also custom designed at LANL with guidance from NIST. The blackbody temperature will be controllable between 250--350{degrees}K. Both of the above sources have 4.1 inch apertures with estimated radiometric instability at less than 1%. The designs of each of these units will be described. The monochromator and interferometer light sources are outside the vacuum, but all optical relay and beam shaping optics are enclosed within the vacuum calibration station. These sources are described, as well as the methodology for alignment and characterization.« less

Authors:
; ; ; ; ; ;  [1];  [2]
  1. Los Alamos National Lab., NM (United States)
  2. National Inst. of Standards and Technology (NML), Gaithersburg, MD (United States). Radiometric Physics Div.
Publication Date:
Research Org.:
Los Alamos National Lab., NM (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10163559
Report Number(s):
LA-UR-94-2127; CONF-940723-3
ON: DE94014459
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: Annual meeting of the Society of Photo-Optical Instrumentation Engineers,San Diego, CA (United States),24-29 Jul 1994; Other Information: PBD: [1994]
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; RADIOMETERS; CALIBRATION; REMOTE SENSING; VISIBLE RADIATION; INFRARED RADIATION; OPTICAL SYSTEMS; INTERFEROMETRY; COOLING SYSTEMS; 440600; OPTICAL INSTRUMENTATION

Citation Formats

Byrd, D A, Maier, II, W B, Bender, S C, Holland, R F, Michaud, F D, Luettgen, A L, Christensen, R W, and O`Brian, T R. Visible/infrared radiometric calibration station. United States: N. p., 1994. Web.
Byrd, D A, Maier, II, W B, Bender, S C, Holland, R F, Michaud, F D, Luettgen, A L, Christensen, R W, & O`Brian, T R. Visible/infrared radiometric calibration station. United States.
Byrd, D A, Maier, II, W B, Bender, S C, Holland, R F, Michaud, F D, Luettgen, A L, Christensen, R W, and O`Brian, T R. 1994. "Visible/infrared radiometric calibration station". United States. https://www.osti.gov/servlets/purl/10163559.
@article{osti_10163559,
title = {Visible/infrared radiometric calibration station},
author = {Byrd, D A and Maier, II, W B and Bender, S C and Holland, R F and Michaud, F D and Luettgen, A L and Christensen, R W and O`Brian, T R},
abstractNote = {We have begun construction of a visible/infrared radiometric calibration station that will allow for absolute calibration of optical and IR remote sensing instruments with clear apertures less than 16 inches in diameter in a vacuum environment. The calibration station broadband sources will be calibrated at the National Institute of Standards and Technology (NIST) and allow for traceable absolute radiometric calibration to within {plus_minus}3% in the visible and near IR (0.4--2.5 {mu}m), and less than {plus_minus}1% in the infrared, up to 12 {mu}m. Capabilities for placing diffraction limited images or for sensor full-field flooding will exist. The facility will also include the calibration of polarization and spectral effects, spatial resolution, field of view performance, and wavefront characterization. The configuration of the vacuum calibration station consists of an off-axis 21 inch, f/3.2, parabolic collimator with a scanning fold flat in collimated space. The sources are placed, via mechanisms to be described, at the focal plane of the off-axis parabola. Vacuum system pressure will be in the 10{sup {minus}6} Torr range. The broadband white-light source is a custom design by LANL with guidance from Labsphere Inc. The continuous operating radiance of the integrating sphere will be from 0.0--0.006 W/cm{sup 2}/Sr/{mu}m (upper level quoted for {approximately}500 nm wavelength). The blackbody source is also custom designed at LANL with guidance from NIST. The blackbody temperature will be controllable between 250--350{degrees}K. Both of the above sources have 4.1 inch apertures with estimated radiometric instability at less than 1%. The designs of each of these units will be described. The monochromator and interferometer light sources are outside the vacuum, but all optical relay and beam shaping optics are enclosed within the vacuum calibration station. These sources are described, as well as the methodology for alignment and characterization.},
doi = {},
url = {https://www.osti.gov/biblio/10163559}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jul 01 00:00:00 EDT 1994},
month = {Fri Jul 01 00:00:00 EDT 1994}
}

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