Media type: Electronic Conference Proceeding Title: The adaptive optics system of the 1.5m GREGOR solar telescope: four years of operation Contributor: Berkefeld, Thomas; Schmidt, Dirk; Soltau, Dirk; Heidecke, Frank; Fischer, Andreas imprint: SPIE, 2016 Published in: Adaptive Optics Systems V Extent: Language: Not determined DOI: 10.1117/12.2232604 ISSN: 0277-786X Origination: Footnote: