The GOES X-ray imager feasibility demonstration

The major components of an X-ray and EUV imager suitable for operational use on the NOAA Geostationary Operational Environmental Satellites (GOES) were fabricated and tested. The design and fabrication techniques used for the X-ray mirror are described. Results are given for both X-ray and visible-light tests of the mirror and a charge coupled device (CCD) imaging detector. These include the successful demonstration of image "despinning,' i.e., the integration of an image moving across the detector to increase integration time and therefore sensitivity. This technique would be necessary to design a practical instrument for use on a spin-stabilized spacecraft such as the present GOES satellite.