The Clementine Mission
Clementine carried four cameras, including one with a laser ranging system. The spacecraft also had two star tracker cameras, used mainly for altitude determination but also as wide-field cameras for various scientific and operational purposes. All sensors on the spacecraft met or exceeded expectations in their performance.
Clementine's imaging cameras are similar to LANDSAT multispectral data for Earth. Both measure reflected solar radiation, and both acquire data through several different bandpasses (filters). Each bandpass was carefully selected to cover parts of the spectrum for which surface materials exhibit known variations. In the case of Clementine, filters were assigned to observe areas in the visible and near-infrared spectrum that are sensitive to variations in bulk mineralogy (principally the abundance of iron-bearing silicates) and the cumulative amount of soil maturity.
Star Tracker Camera
The Star Tracker provides an inertial reference for the spacecraft by comparison of star field images with an onboard star map. Two of these cameras were flown on the Clementine Mission. [Instrument Details at NSSDC]
This medium resolution camera uses CCD technology and operates in the near- ultraviolet and visible region of the spectrum. Combined with a six-position spectral filter wheel, this sensor was designed for mineralogical studies of the Moon. [Instrument Details at NSSDC]
Near Infrared Camera
This camera provided images in the 1-3 micrometer wavelength region at medium resolution. Combined with a six-position spectral filter wheel, this camera was used for mineralogical studies. [Instrument Details at NSSDC]
High Resolution Camera
This camera operated at visible wavelengths with CCD technology combined with an image intensifier and a six-position spectral filter wheel. It provided higher-resolution images free from spacecraft motion blur. [Instrument Details at NSSDC]
Long Wave Infrared Camera
This lightweight camera operated in the thermal infrared region of the spectrum. It was used to measure the thermal emission from the Moon. [Instrument Details at NSSDC]
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