NASA's Deep Impact's Tempel 1 Mission Update. Images of impact taken with the medium resolution imager. The blue dotted line is the position of the spectrometer's slit.

Images of impact taken with the medium resolution imager. The blue dotted line is the position of the spectrometer's slit. At each point along the slit, a spectrum exists that contains information about the constituents in the spectrometer's field of view.

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