THE RECENT Hα VARIATIONS OF γ Cas

First massive star reported to display Balmer emission lines, γ Cas has long served as a prototype for the Be category. Its bright and hard X-ray emission, however, makes it atypical amongst Be stars. In 2024-2025, an optical monitoring was undertaken in parallel to an X-ray campaign. Here we report on the results of this monitoring and we also derived refined ephemerides for the system combining > 104 d of radial velocity data.