Cross-certification of the diffractive corrector by diffractive imitator for Russian 6-m Large Altazimuth Telescope

摘要

Diffractive corrector for Large Altazimuth Telescope with 6-m mirror was developed and fabricated. Diffractive imitator was fabricated for certification of the corrector. Imitator had off-axis geometry for elimination of the ghosts and improved certification reliability. Experimental results of corrector certification are presented.