From Event: SPIE Optical Engineering + Applications, 2017
The Ralph instrument on the New Horizons mission consists of a telescope that feeds two focal planes: the Multi-spectral Visible Imaging Camera (MVIC), a visible, near-IR imager and the Linear Etalon Imaging Spectral Array (LEISA), a short-wavelength IR spectral imager. During the encounter with the Pluto system in 2015, Ralph operated as expected collecting numerous high spatial resolution images of the main components of the system, Pluto and Charon, as well as the four much smaller objects Hydra, Kerberos, Nix and Styx. New Horizons, launched on January 19, 2006, is the first mission to explore Kuiper Belt Objects (KBOs).
Allen W. Lunsford, Dennis Reuter, Donald E. Jennings, Catherine B. Olkin, S. Alan Stern, and Gerald E. Weigle, "Imaging and spectral performance of the New Horizons Ralph instrument during the 2015 Pluto encounter (Conference Presentation)," Proc. SPIE 10401, Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems, 1040110 (Presented at SPIE Optical Engineering + Applications: August 10, 2017; Published: 26 September 2017); https://doi.org/10.1117/12.2274415.5589085775001.
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