SIRONI, GIORGIAGIORGIASIRONIPROSERPIO, LauraLauraPROSERPIOMILLUL, RacheleRacheleMILLULTAGLIAFERRI, GianpieroGianpieroTAGLIAFERRILESSIO, LuigiLuigiLESSIOSCUDERI, SalvatoreSalvatoreSCUDERITorricelli, C.C.TorricelliTorricelli, A.A.TorricelliValsecchi, G.G.ValsecchiPARESCHI, GiovanniGiovanniPARESCHI2025-04-022025-04-022024978151067523097815106752470277-786Xhttp://hdl.handle.net/20.500.12386/37004The standard design for 4-meter diameter class Imaging Atmospheric Cherenkov Telescopes (IACTs) used in groundbased gamma-ray astronomy is the dual-mirror Schwarzschild-Couder-like configuration. This design has been adopted for the telescopes in the ASTRI-Horn and ASTRI Mini-Array experiments (1 + 9 telescopes) and the construction of the 37 telescopes in the Small Size Telescope (SST) sub-array of the Cherenkov Telescope Array Observatory (CTAO) in Chile. The design provides an aplanatic optical response across a field of view wider than 10 degrees and is suitable for compact cameras using small pixels such as SiPM sensors. The telescopes feature secondary mirrors with a diameter of 1.8 meters, made of monolithic glass using a hot-slumping replication process. The paper discusses the manufacturing and characterization results of the prototype mirrors....STAMPAenConference paper10.1117/12.3019743https://www.spiedigitallibrary.org/conference-proceedings-of-spie/13100/3019743/Production-via-thermal-slumping-of-large-glass-monolithic-secondary-mirrors/10.1117/12.3019743.shortFIS/05 - ASTRONOMIA E ASTROFISICA