  We analyse photometric data of nine supernovae (SNe) in filters V, R and I
obtained during observational campaigns at the OAUNI site in 2016, 2017 and
2023. The calibrated magnitudes of the observed SNe were compared with their
respective light curves available in the literature to study their evolution
after their maximum brightness. In some cases, the supernova color-color
diagnostic diagram was used to determine our observation date and correctly
locate our magnitudes on the light curves. For this purpose, the use of
supernova light curve templates, as well as reference supernovae, was also
helpful. This work allowed us to verify the feasibility of performing precision
astronomical photometry at the OAUNI.
