Description
High-time-resolution detectors are playing a crucial role in advancing our understanding of neutron
stars and transient phenomena, enabling precise measurements of their properties. SiFAP2,
the high-speed optical photometer permanently mounted at the 3.6m INAF Telescopio Nazionale
Galileo, obtained significant breakthroughs discovering optical pulsations of three millisecond pulsars
in different luminosity states. SiFAP2 is also involved in multiwavelength campaigns on FRBs
to search for optical counterparts. In this talk, I will present the improvements applied to the instrument
from the point of view of detectors and timing devices within the “GEMS” project. I will
also present the enhanced e-SiFAP instrument, a 6-band Vis/SWIR fast photometer with added
polarimetric capabilities as well as the new SiFAP-SoFT photometer mounted at the 1.5m Loiano
Telescope especially conceived for simultaneous optical measurements targeted on FRBs and their
possible link with magnetars.