Abstract
The Solar Radiation and Climate Experiment (SORCE) is a NASA-sponsored satellite mission that is providing state-of-the-art measurements of incoming x-ray, ultraviolet, visible, near-infrared, and total solar radiation. Labsphere was contracted by Laboratory for Atmospheric and Space Physics (LASP) to build a radiant uniform calibration source for the next-generation SORCE replacement iinstrument that had a high fraction of a direct view of the sun at the top of the atmosphere. The aperture of the system was 1” to fractionally fill the field of view (FOV) of the next generation SORCE instrument for solar observation and calibration. This presentation will exhibit the design parameters of the source using Labsphere’s PEL Plasma sources and QTH lamps and a unique fiberoptic delivery structure. A peak radiance of 1.121e+4 uW/cm2-sr-nm was achieved without a spatial diffuser and 2.984e+3 uW/cm2-sr-nm was achieved at 600nm with a diffuser. Uniformity and stability performance will be reported both during construction and validation as well as further test results developed at the customer’s site.
The SUNSOURCE: Direct Solar-View Radiance Levels for Relative Calibration
The Solar Radiation and Climate Experiment (SORCE) is a NASA-sponsored satellite mission that is providing state-of-the-art measurements of incoming x-ray, ultraviolet, visible, near-infrared, and total solar radiation. Labsphere was contracted by Laboratory for Atmospheric and Space Physics (LASP) to build a radiant uniform calibration source for the next-generation SORCE replacement iinstrument that had a high fraction of a direct view of the sun at the top of the atmosphere. The aperture of the system was 1” to fractionally fill the field of view (FOV) of the next generation SORCE instrument for solar observation and calibration. This presentation will exhibit the design parameters of the source using Labsphere’s PEL Plasma sources and QTH lamps and a unique fiberoptic delivery structure. A peak radiance of 1.121e+4 uW/cm2-sr-nm was achieved without a spatial diffuser and 2.984e+3 uW/cm2-sr-nm was achieved at 600nm with a diffuser. Uniformity and stability performance will be reported both during construction and validation as well as further test results developed at the customer’s site.