Recent advances in CZT strip detectors and coded mask imagers

The UCSD, WU, UCR and Nova collaboration has made significant progress on t he necessary techniques for coded mask imaging of gamma-ray bursts: positio n sensitive CZT detectors with good energy resolution, ASIC readout, coded mask imaging, and background properties at balloon altitudes. Results on co ded mask imaging techniques appropriate for wide field imaging and localiza tion of gamma-ray bursts are presented, including a shadowgram and deconvol ved image taken with a prototype detector/ASIC and MURA mask.