GRANTECAN telescope M3 mirror manufacturing

LZOS is manufacturing the M3 Mirror flat surface for the GRANTECAN Project. The Mirror has an elliptical configuration and axial dimensions of 1521mm x 1073mm. The results of the M3 Mirror figuring and final polishing, testing in the Ritchey-Common layout at two 30° and 60° angles of incidence of a principal ray are presented in the manuscript.