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The
LWIR camera used a mercury cadmium telluride (HgCdTe), 128 x 128 pixel array mechanically
cooled to 65 K. Filters defined a single pass band between 8 and 9.5 micrometers.
Its field of view was 1 degree x 1 degree, with an insantaneous field of view (IFOV)
of 143 microrad. The LWIR camera used on Clementine weighed 2.1 kg, including
the Stirling-cycle cryocooler. The HiRes camera used a silicon charge-coupled-device
(CCD), with a microchannel plate intensifier. It had a 228 x 384 pixel array sensitive
between 0.35 and 0.80 micrometers. Its field of view was 0.3 degrees x 0.4 degrees,
with an IFOV of 18 microrad. Pass bands were defined by a six-position filter wheel
as 395 to 435 nm, 535 to 585 nm, 625 to 675 nm, 725 to 775 nm, and 450 to 800 nm,
with an opaque disc in the sixth position to protect the intensifier. All except
the broad pass band were selected by the NASA Science Advisory Committee.
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