26 September 2007 Absolute flux calibrations of stars
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Abstract
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, Steven W. Brown, Howard W. Yoon, B. Carol Johnson, 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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