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Solar flares are occasionally responsible for severe Space Weather events,which can affect space-borne and ground-based infrastructures, endangeringanthropic technological activities and even human health and safety. Thus, anessential activity in the framework of Space Weather monitoring is devoted tothe observation of the activity level of the Sun.  In this context, the acquisition system of the Catania Solar Telescope hasbeen recently upgraded in order to improve its contribution to the EuropeanSpace Agency (ESA) - Space Weather Service Network through the ESA Portal,which represents the main asset for Space Weather in Europe.  Here, we describe the hardware and software upgrades of the Catania SolarTelescope and the main data products provided by this facility, which includefull-disc images of the photosphere and chromosphere, together with a detailedcharacterization of the sunspot groups. As a showcase of the observationalcapabilities of the revamped Catania Solar Telescope, we report the analysis ofa B5.4 class flare occurred on 2020 December 7, simultaneously observed by theIRIS and SDO satellites.

On the evolution of a sub-C class flare: a showcase for the capabilities of the revamped Catania Solar Telescope