Development of a heliostat facility for solar-radiation-based calibration of earth observing sensors

Michele A. Kuester, Jeffrey S Czapla-Myers, Paul Kaptchen, William Good, Tony Lin, Raymund To, Stuart F Biggar, Kurtis Thome

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

A new heliostat facility at Ball Aerospace and Technologies Corporation (BATC) in Boulder, CO will allow the use of the sun as the source in the calibration of earth observing sensors. The solar spectrum is the basic energy source for such instruments; therefore it is advantageous to perform initial ground radiometric calibrations using the sun. Using this method for preflight radiometric calibration reduces uncertainties caused by the spectral mismatch between the preflight and in-flight calibration, especially in the case in which a solar diffuser is the in-flight calibration method. This method also reduces stray light concerns as the instrument diffuser is measured in situ with the same radiance level it sees on orbit. This paper presents the design of a heliostat test facility which tracks the sun and directs the solar beam into a thermal vacuum chamber, allowing the instrument under test to be kept in a safe, clean and controllable environment. Design considerations that affect the uniformity and transmission of the system are discussed. The opto-mechanical logistics of creating a heliostat that will deliver a 13-inch solar beam into a thermal vacuum chamber are also presented. This facility is currently under construction at BATC and is expected to be operational by the end of 2008.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7081
DOIs
StatePublished - 2008
EventEarth Observing Systems XIII - San Diego, CA, United States
Duration: Aug 11 2008Aug 13 2008

Other

OtherEarth Observing Systems XIII
CountryUnited States
CitySan Diego, CA
Period8/11/088/13/08

Fingerprint

Heliostats (instruments)
heliostats
Solar Radiation
solar radiation
Solar radiation
sun
Calibration
Earth (planet)
diffusers
Sun
vacuum chambers
Radiometric Calibration
Sensor
Diffuser
balls
sensors
Sensors
flight
Vacuum
Ball

Keywords

  • Earth observing sensors
  • Heliostat
  • Radiometric calibration

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Kuester, M. A., Czapla-Myers, J. S., Kaptchen, P., Good, W., Lin, T., To, R., ... Thome, K. (2008). Development of a heliostat facility for solar-radiation-based calibration of earth observing sensors. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 7081). [708119] https://doi.org/10.1117/12.794228

Development of a heliostat facility for solar-radiation-based calibration of earth observing sensors. / Kuester, Michele A.; Czapla-Myers, Jeffrey S; Kaptchen, Paul; Good, William; Lin, Tony; To, Raymund; Biggar, Stuart F; Thome, Kurtis.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7081 2008. 708119.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kuester, MA, Czapla-Myers, JS, Kaptchen, P, Good, W, Lin, T, To, R, Biggar, SF & Thome, K 2008, Development of a heliostat facility for solar-radiation-based calibration of earth observing sensors. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 7081, 708119, Earth Observing Systems XIII, San Diego, CA, United States, 8/11/08. https://doi.org/10.1117/12.794228
Kuester MA, Czapla-Myers JS, Kaptchen P, Good W, Lin T, To R et al. Development of a heliostat facility for solar-radiation-based calibration of earth observing sensors. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7081. 2008. 708119 https://doi.org/10.1117/12.794228
Kuester, Michele A. ; Czapla-Myers, Jeffrey S ; Kaptchen, Paul ; Good, William ; Lin, Tony ; To, Raymund ; Biggar, Stuart F ; Thome, Kurtis. / Development of a heliostat facility for solar-radiation-based calibration of earth observing sensors. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7081 2008.
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