Compton telescope with coded aperture mask: Application to the INTEGRAL/IBIS Compton mode

Coupling a Compton telescope with a coded aperture mask provides a powerful tool for constructing images between 200 keV and several MeV, as it automatically subtract the background during the image reconstruction. This technique has been successfully applied to the INTEGRAL/IBIS Compton mode and is presented in this paper. The Compton kinetics coupled with the coded aperture mask allows us to construct images with high spatial resolution (12 arcmin) for the first time for a Compton telescope in that energy range, and perform polarization, spectral and temporal studies of astrophysical sources