M1 primary mirror manufacturing for VISTA project

JSC LZOS is carrying out work on the manufacturing of the M1 primary hyperbolic Mirror with the 4100 mm diameter for the VISTA project (Visible and Infrared Survey Telescope for Astronomy). Vertex radius of Mirror is 8094 mm (F/0.98), conic constant -1.129792 and asphericity about 880 microns. The current situation of the work carried out is presented in the manuscript.