Interaction of Energy and Matter: Dawn Mission Instrumentation

							         Interaction of Energy
              and Matter:
       Dawn Mission Instrumentation

             Framing Cameras
Dawn




                                      1
       What are Framing Cameras?


        The Framing Cameras are the
       scientific imaging system of the
                 Dawn Mission
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                                          2
       What do Framing Cameras do?


         The Framing Cameras also
              contribute to the
          navigation system of the
             Dawn Spacecraft
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                                     3
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4
       What will the Framing Cameras do?

         What will the Framing Cameras do?
          They will return images that map the surfaces
                               of
                        Vesta and Ceres.
                 These images will be used to:
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        Create global topography, albedo,andofcolor maps
          Determine fractures mineralogical composition
           Search craterthe rates ofvolume,andCeres.
            the elemental and and Vesta distribution
             Determine morphology and and mass
             Measure spin shape, evidence volcanism.
        Map Study forsurface reflectance characteristics.
                       on Vesta and Ceres.
                        of Vesta and Ceres
                        of
                       of Vesta and Ceres.
               using clear and narrow band filters.


                                                            5
         Dawn’s Framing Cameras

                        EMR reflected from Vesta and Ceres enters here

                           Directional indicator
                                                                       door


         Venting Ports                                       baffle




                                                   CCD radiator

                                                                                       struts
                                                     lens barrel
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                                                                                          filter wheel drive


                                                   Camera Head


                                                    CH radiator
                                                                        electronics box


       4-lens Optical           Optical System
           System                Flight Model

                                                    Figure 2. The DAWN Framing Camera without its
                                                    protective, black Multi Layer Insulation. The inset        6
                                                    shows the CCD.
              Dawn’s Framing Cameras
                                    Imaging System
                          EMR reflected from Vesta and Ceres enters here


                                                door


                                  baffle




                        CCD radiator

                                                              struts
                          lens barrel      cv
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                                                                  filter wheel drive


                        Camera Head
                                  cv


                         CH radiator
                                                electronics box
       4-lens Optical
           System


                                                              20 mm x 20 mm
                         Figure 2. The DAWN Framing Camera without its
                                                                   Filters
                         protective, black Multi Layer Insulation. The inset           7
                         shows the CCD.
              Dawn’s Framing Cameras
                                                                   Data Processing Unit
                           door


                 baffle



                                                    CCD
       CCD radiator

                                           struts
         lens barrel

                                              filter wheel drive


       Camera Head
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                                                                       Framing Camera
        CH radiator                                                     surface images
                            electronics box




        Figure 2. The DAWN Framing Camera without its
        protective, black Multi Layer Insulation. The inset
        shows the CCD.



                                                                                          8
       Interactions of Energy and Matter


       What Energy and Matter Interactions
               are involved in the
            scientific measurements
        made by the Framing Cameras?
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                                             9