Abstract

The high-resolution imaging spectrometer (HIRIS) is a facility instrument on the earth observing system (EOS) platform. The instrument simultaneously collects 1000 cross track 30- × 30-m footprints of data with each footprint imaged in 192 continuous spectral channels covering the 0.40-2.45-μm spectral band. Each channel has a spectral sampling interval of ~10 nm. This spatial coverage is achieved by using two focal plane area arrays. One array is a 64 × 1000 silicon CCD which covers the 0.4-1.0-μm spectral region, and the other is a 150 × 1000 shortwave HgCdTe area array covering the 1.0-2.45-μm spectral region. The HgCdTe focal plane functional requirements are given in Table I. As can be seen, the 150 × 1000 array is achieved by mosaicking together five smaller arrays. The current 128 × 128 devices were developed as a step toward fabricating the larger HIRIS arrays.

© 1988 Optical Society of America