The Euclid mission of the European Space Agency (ESA), scheduled for launch in 2023, is
designed to investigate the nature of Dark Matter and Dark Energy. From the privileged position
of the L2 Lagrange point, Euclid will cover about 15 000 deg2 out to a redshift 𝑧 ∼ 2, making
it the largest redshift survey ever performed. Euclid will use two main probes to constrain
the cosmological parameters: weak gravitational lensing and galaxy clustering, which require the
measurement of the shapes and of the three-dimensional distribution of galaxies, respectively. The
precision required for these scientific goals dramatically depends on a complete calibration of the
scientific instruments, both on the ground and in flight. In this work, we describe our procedure
to determine the optimal set of pointings for Euclid’s in-flight Self-Calibration procedure.