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Autor:
Thomas Flügel-Paul, Philipp Schleicher, Houssine Makhlouf, Tom Lammers, Antonia C. Klein, Uwe D. Zeitner, Emmanuelle Harel, Frank Burmeister, Tino Benkenstein, Sascha Ehrhardt, Romain Cluzel, Renaud Mercier-Ythier, Philémon Giraud
Publikováno v:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV.
The highly aspheric secondary mirror M2 of ESO’s Extremely Large Telescope (ELT) is the largest convex mirror ever polished. We report on manufacturing and error analysis of the high accuracy computer-generated hologram (CGH) used as part of the te