  SOXS (Son Of X-Shooter) is the new medium resolution wide-band spectrograph
to be installed at the 3.6m New Technology Telescope (NTT) in La Silla. SOXS
will offer simultaneous wavelength coverage from 0.35 to 2.0 {\mu}m and will be
dedicated to the study of transient and variable sources. While nominal optical
performances of the system were presented in previous proceedings
(arXiv:1809.01521), we here present a set of further analyses aimed to identify
and quantify optical effects, due to changes in temperature and orientation of
the instrument during alignment and operations.
