  The following exercises aim to learn the link between the object intensity
distribution and the corresponding visibility curves of a long-baseline ptical
interferometer. They are also intended to show the additional constraints on
observability that an interferometer has. This practical session is meant to be
carried out with the ASPRO software, from the Jean-Marie Mariotti Center, but
can also be done using other observation preparation software, such as viscalc
from ESO. There are two main parts with series of exercises and the exercises
corrections. The first one aims at understanding the visibility and its
properties by practicing with simple examples, and the second one is about UV
coverage.
