EXIST on International Space Station
A full-scale version of EXIST on the International Space Station (ISS) would include 8 m2 total area in 2 large coded aperture telescopes with combined 80° x 160° field of view. EXIST-ISS could be mounted on the International Space Station (ISS), as shown above. It would provide full-sky imaging each orbit and achieve the ultimate hard x-ray survey sensitivity: a factor of ~1000 better than the only previous (HEAO-A4; 1979) all sky survey.
- EXIST-ISS Papers
- Coded Aperture Imaging Tutorial
- Energetic X-ray Imaging Telescope (EXITE) -- Harvard balloon-borne coded aperture HX telescope development project
A Few Overview Figures
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| Est. BG spectra (J. Hong). Major components are cosmic diffuse, cosmic rays, and spallation. Full-array BG rate ~25000 cts/s. | Sensitivity of EXIST and other surveys. | |
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| Sensitivity vs energy for 3 telescopes. "20° x 25°" should read "180° x 75° fully coded". | Approximate 1-day coverage plotted in Galactic coordinates. Exposure is greatest at orbital poles. This is for the ISS orbit, with inclination ~52°, which smoothes out much of the nonuniformity. | |