And one that you would think would float up to the non-technical descriptions of the mission. Unfortunately the text with the answer is pretty heady. Any optical engineers in the crowd?
Anyway, from these quotes: Each array is combined with optics and a small filter wheel to form one "eye" of a multispectral, stereoscopic imaging system...
...Each filter wheel has eight positions, allowing multispectral sky imaging and surface mineralogic studies in the 400-1100 nm wavelength region. The left wheel contains one "clear" (empty) position. The remaining filter wheel positions are filled with narrowband interference filters that are circular and 10 mm in diameter, and that have the central wavelengths and bandpasses listed in Table 2.1.2-1. One filter on each eye has an ND5.0 coating to allow direct imaging of the Sun at two wavelengths.
I would guess (pending confirmation by someone who can understand this stuff) that your guess about the filters is correct. Also there's a table at that link that details "Pancam Multispectral Filter Set: Wavelength (and Bandpass) in nm".
Space/Science » in reply to Re: What a fine fine camera...
Good question