ProtoEXIST: Advanced Prototype CZT Coded Aperture Telescopes for EXIST

Branden Allen, Jaesub Hong, Josh Grindlay +9

{\it ProtoEXIST1} is a pathfinder for the {\it EXIST-HET}, a coded aperture hard X-ray telescope with a 4.5 m${}^2$ CZT detector plane a 90$\times$70 degree field of view to be flown…