A review of the principles of current X-ray telescopes is made with particular emphasis on two-step imaging using coded masks. A review of the previous state of the art is made and the limitations are a explained. Anew technique is... more
A review of the principles of current X-ray telescopes is made with particular emphasis on two-step imaging using coded masks. A review of the previous state of the art is made and the limitations are a explained. Anew technique is suggested based on cyclic difference sets which, in theory, can yield near perfect results. The new technique is illustrated with simulations using 1-D masks which are ideally suited for rocket experiments, in which the imaging time is rather limited. The technique can be readily applied to the construction of 2-D masks which can produce proper 2D images of X-ray sources when more stable platforms e.g. attitude stabilised satellites are avialble.
