SOVIM (Solar Variantions and Irradiance Monitor) instrument is based on an earlier instrument (SOVA) which flew aboard the European Retrievable Carrier, launched on STS-46 in 1992. It is designed to measure solar radiation with wavelengths from 200 nanometers - 100 micrometers. This covers near-ultraviolet, visible and infrared areas of the spectrum.
SOLSPEC (Solar Spectral irradiance measurements) is designed to measure the solar spectral irradiance in the 165 - 3000 nanometer range with high spectral resolution.
SOL-ACES (Auto-calibrating Extreme Ultraviolet and Ultraviolet spectrometers) consists of four grazing incidence grating spectrometers. They are designed to measure the EUV/UV spectral regime (17 nanometers - 220 nanometers) with moderate spectral resolution.
^Wienhold, F.G. et al. (2000-09-15). "The solar package on ISS: SOL-ACES". Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science, Volume 25, Issues 5-6, 2000, Pages 473-476. Retrieved 2007-09-21.