Field-averaging spectrograph camera for remote sensing applications and its characteristics

A field-averaging spectrograph camera (FASC) and a beam split camera (BSC) are used together and separately in tests of systems for remote sensing. The FASC utilizes a continuous interference filter and a step tablet; color patches are used for comparisons with results obtained with a spectroradiometer and a self-spectrophotometer. Color positives are reproduced (cyan; red; and false color from IR and green bands using the BSC), and wavelength dependences of relative reflectance for various color patches are displayed. Higher spectral reflectance (probably due to flare) is noted in the FASC results. The combination of FASC and BSC is recommended as an effective and readily portable system for remote sensing work.