  The simulation of atmospheric showers through Monte-Carlo processes as well
as their projection into Imaging Atmospheric Cherenkov Telescopes (IACT) is
long and very computing intensive. As these simulations are the most advanced
ones from a physics point of view, they are not suited for simple tests.
  Here we present a Python package developed in order to model atmospheric
showers using different profiles and to image them with an array of IACT. This
allows for first order studies of the influence of the primary photon energy
and angular direction on the stereoscopic images. Its simplicity also makes it
convenient for public dissemination and outreach as well as for teaching
purposes.
  This package has been developed to make the most out of the simplicity of
Python but has also been optimised for fast calculations. It is developed in
the framework of the ASTERICS H2020 project and as such is available as an
open-source software.

Instrumentation and Methods for Astrophysics