Figure Captions

Figure 1. Mechanical drawing of the Visible Imaging System (VIS) as viewed from the top. The radiator that covers the top of the instrument is not shown.

Figure 2. Diagram of the optics for the low-resolution camera.

Figure 3. Diagram of the optics for the medium-resolution camera.

Figure 4. Spot diagrams for the optics of the three cameras in the VIS. A resolution of 7 lp/mm is required for the 256 × 256-pixel format for the CCDs.

Figure 5. Diagram of the optics for the Earth camera.

Figure 6. Image distortion for the Earthcamera optics at the input focal plane of the sensor assembly.

Figure 7. Cut-away diagram of the sensor assembly for the low-resolution camera.

Figure 8. Block diagram of the electronics for the VIS.

Figure 9. Modulation transfer function for the image intensifiers.