2.2.2 spase://SMWG/Instrument/Ground/MaunaLoaSO/PSPT MLSO_PSPT 2015-10-23T00:00:00Z The Precision Solar Photometric Telescope (PSPT) is the centerpiece of the National Science Foundation Radiative Inputs from Sun to Earth (RISE) program whose aim is to measure and understand variability in the solar radiative output. The PSPT produces seeing-limited full-disk (2048x2048 with 1.05"/pixel) images in the blue continuum (409.4nm, FWHM 0.3nm), red continuum (607.1nm, FWHM 0.5nm), CaII K (393.4nm, FWHM 0.3nm), CaII K Narrow Band Wing (NBW) (393.6nm, FWHM 0.1nm), and CaII K Narrow Band Core (NBC) (393.4nm, FWHM 0.1nm), with an unprecedented 0.1% pixel-to- pixel relative photometric precision. spase://SMWG/Person/Thomas.E.Holzer GeneralContact spase://SMWG/Instrument/MaunaLoaSO/PSPT MultispectralImager Photometer PSPT at MLSO spase://SMWG/Observatory/Ground/MaunaLoaSO