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Filter Allocation

The SCS uses 24 filters to isolate different colours of light in the visible and near infra red ( wavelength = 440-1000 nm) part of the spectrum. The filters (12 per filter wheel) sub divide into X classes:

11 geology filters (for determining the mineral composition of rocks) .
An uncoated "close-up" lens (CUL) to allow imaging of rock texture at 80 mm working distance (effectively x6.4 magnification). The CUL is also required for in focus images of the WAM.
6 solar filters (for observing absorption of sun light by atmospheric dust and water vapour).
2 Stereo filters for close range work.
4 Lenticular filters (for sharp long distance stereo and colour imaging).

Provisional filter details are given in the following table (which will be updated once filter manufacture is complete).

Comments: Colours indicate RGB colour image component L=left/R=right Orange = geology filter Red = dust opacity Blue = water vapour DEM = Digital Elevation Model
P.H. Smith et al., 1997, JGR 102 (E2) 4003-4025, Feb. 25, 1997.

15th February 2001