Ralph: A Visible/Infrared Imager for the New Horizons Pluto/Kuiper Belt Mission
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The New Horizons instrument named Ralph is a visible/near infrared multi-spectral imager and a short wavelength infrared spectral imager. It is one of the core instruments on New Horizons, NASA’s first mission to the Pluto/Charon system and the Kuiper Belt. Ralph combines panchromatic and color imaging capabilities with SWIR imaging spectroscopy. Its primary purpose is to map the surface geology and composition of these objects, but it will also be used for atmospheric studies and to map the surface temperature. It is a compact, low-mass (10.5 kg) power efficient (7.1 W peak), and robust instrument with good sensitivity and excellent imaging characteristics. Other than a door opened once in flight, it has no moving parts. These characteristics and its high degree of redundancy make Ralph ideally suited to this long-duration flyby reconnaissance mission.
KeywordsNew Horizons Pluto/Charon Kuiper Belt Ralph Multi-spectral imager Infrared spectral imager Hyperspectral imager Wedged filter TDI
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- D. Cruikshank, C.M. Dalle Ore, Private communication, 2000 Google Scholar
- G.H. Fountain, D.Y. Kusnierkiewicz, C.B. Hersman, T.S. Herder, T.B. Coughlin, W.C. Gibson et al., The New Horizons spacecraft. Space Sci. Rev. (2008), this issue Google Scholar
- C.B. Olkin, D.C. Reuter, A. Lunsford, R.P. Binzel, S.A. Stern, The New Horizons distant flyby of asteroid 2002 JF56 (2008, in preparation) Google Scholar
- D.C. Reuter, D.E. Jennings, G.H. McCabe, J.W. Travis, V.T. Bly, A.T. La et al., Hyperspectral sensing using the linear etalon imaging spectral array, in SPIE Proceedings of the European Symposium on Satellite Remote Sensing III, Conference on Sensors, Systems, and Next Generation Satellites II, September 23–26, 1996, Taorima, Sicily, Italy, vol. 2957 (Int. Soc. Opt. Eng., Bellingham, 1996), pp. 154–161 Google Scholar
- D.C. Reuter, G.H. McCabe, R. Dimitrov, S.M. Graham, D.E. Jennings, M.M. Matsumura et al., The LEISA/ Atmospheric Corrector (LAC) on EO-1, in IGARS Proceedings, IEEE 2001 International Geoscience and Remote Sensing Symposium, July 9–13, 2001, Sydney, Australia, vol. 1, pp. 46–48 Google Scholar
- D.C. Reuter, A. Stern, J. Baer, L. Hardaway, D. Jennings, S. McMuldroch et al., Ralph: A visible/infrared imager for the New Horizons Pluto/Kuiper Belt mission, in SPIE Proceedings of the Optics and Photonics Conference, Astrobiology and Planetary Missions, July 31–August 4, 2005, San Diego CA, vol. 5906, 59061F-1 to 59061F-11 (Int. Soc. Opt. Eng., Bellingham, 2005), paper 5906-51 Google Scholar
- K.P. Rosenberg, K.D. Hendrix, D.E. Jennings, D.C. Reuter, M.D. Jhabvala, A.T. La, Logarithmically variable infrared etalon filters, in SPIE Proc. Opt. Thin Films IV N. Dev., San Diego, CA, vol. 2262 (Int. Soc. Opt. Eng., Bellingham, 1994), pp. 25–27 Google Scholar
- S.A. Stern, D.C. Slater, W. Gibson, H.J. Reitsema, A. Delamere, D.E. Jennings, D.C. Reuter, J.T. Clarke, C.C. Porco, E.M. Shoemaker, J.R. Spencer, The highly integrated Pluto payload system (HIPPS): A sciencecraft instrument for the Pluto mission, in SPIE Proceedings, EUV, X-RAY and Gamma-Ray Instrumentation for Astronomy VI, San Diego, CA, vol. 2518 (Int. Soc. Opt. Eng., Bellingham, 1995), pp. 39–58 Google Scholar
- S.A. Stern, The New Horizons Pluto Kuiper Belt mission: An overview with historical context. Space Sci. Rev. (2008), this issue Google Scholar
- S.A Stern, D.C Slater, J. Scherrer, J. Stone, G. Dirks, M. Versteeg, M. Davis, G.R. Gladstone, J.W. Parker, L.A. Young, O.H.W. Siegmund, ALICE: The ultraviolet imaging spectrograph aboard the New Horizons Pluto-Kuiper Belt mission. Space Sci. Rev. (2008), this issue Google Scholar
- L.A. Young, S.A. Stern, H.A. Weaver, F. Bagenal, R.P. Binzel, B. Buratti et al., New Horizons: Anticipated scientific investigations at the Pluto system. Space Sci. Rev. (2008), this issue Google Scholar