Request InfoStellarNet Inc.StellarNet Inc. has introduced the IC2 integrating sphere for use with its portable EPP2000 spectroradiometers. This 2-in. cube attaches to the spectroradiometer via an SMA fiber optic cable and has a light input port with a 5/8-in. diameter. It measures spectral irradiance, illuminance and reflection from 300 to 2500 nm. 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