  A software package able to simulate imaging observations of galaxy clusters
by the Chandra X-ray telescope is here presented. We start from high resolution
N-body hydrodynamical simulations of galaxy clusters and assign to each gas
particle a spectrum of emissivity, after assuming the MeKaL model. We then
construct spatial images of the source differential flux which are used to
create lists of incoming X-ray photons, preserving information on photon
direction and energy. The photon lists are passed on to the Chandra simulator
(MARX) to produce the final observation events. Background events are added to
complete the simulation. Data analysis is currently in progress and simulated
observations by other telescopes will become available in the future.
