Explanation: Ralph is the main 'eyes' of New Horizons. Ralph consists of three panchromatic (black-and-white) and four color imagers inside its Multispectral Visible Imaging Camera (MVIC), as well as an infrared compositional mapping spectrometer called the Linear Etalon Imaging Spectral Array (LEISA). (The instrument is so named because it is coupled with an ultraviolet spectrometer called Alice in the New Horizons remote-sensing package - a reference familiar to fans of "The Honeymooners" TV show.)


Image credit: NASA.