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[56.08] Investigation of the Sources of Irradiance Variation on the Sun (ISIS)

B. J. LaBonte, P. N. Bernasconi, D. Rust (JHU/APL), P. Foukal (CRI), H. Hudson (UCB/SSL), H. Spruit (MPA-Garching)

There is a persistent correlation of the longterm climate change and solar irradiance. ISIS is designed to understand the physical basis of this correlation. ISIS combines an innovative bolometric imager and a multiband CCD imager. The bolometric imager has uniform response from 200 nm to 3000 nm, spatial resolution < 5 arcseconds, and precision of < 0.1% in a one minute integration. The multiband imager records ultraviolet irradiance variation in the band from 200 to 350 nm, measures photospheric temperature structure, and provides chromospheric structure in Ca II K and H-alpha, with spatial resolution <1.0 arcsecond. Designed for flight on the Solar Dynamics Observatory, ISIS will provide the comprehensive photometric measurements needed to characterize the irradiance variation from identifiable structures and challenge theoretical models of convection and the solar dynamo.

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Bulletin of the American Astronomical Society, 34
© 2002. The American Astronomical Soceity.