26 September 2007 Absolute flux calibrations of stars
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Absolute stellar photometry is based on 1970s terrestrial measurements of the star Vega calibrated by using the Planck radiance from a Cu fixed-point blackbody. Significant advances in absolute radiometry have been made in the last 30 years that offer the potential to improve both terrestrial and space-based absolute stellar photometry. These advances include new high-temperature blackbody standards, absolute cryogenic radiometry, solid-state optical radiation sources, improved atmospheric transmittance modeling, and laser-based radiometric calibration. We describe the possible use of these new technologies for ground-based calibration of standard stars and their impact on stellar photometry, including present efforts to achieve highly accurate measurements from the ultraviolet to the near infrared for cosmological applications.
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Gerald T. Fraser, Gerald T. Fraser, Steven W. Brown, Steven W. Brown, Howard W. Yoon, Howard W. Yoon, B. Carol Johnson, B. Carol Johnson, Keith R. Lykke, Keith R. Lykke, } "Absolute flux calibrations of stars", Proc. SPIE 6678, Infrared Spaceborne Remote Sensing and Instrumentation XV, 66780P (26 September 2007); doi: 10.1117/12.734600; https://doi.org/10.1117/12.734600

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