The GREGOR solar telescope on Tenerife
  2011 was a successful year for the GREGOR project. The telescope was finally completed in May with the installation of the 1.5-meter primary mirror. The installation of the first-light focal plane instruments was completed by the end of the year. At the same time, the preparations for the installation of the high-order adaptive optics were finished, its integration to the telescope is scheduled for early 2012. This paper describes the telescope and its instrumentation in their present first light configuration, and provides a brief overview of the science goals of GREGOR. 
Wolfgang Schmidt, Oskar von der L\"uhe, Reiner Volkmer, Carsten   Denker, Sami Solanki, Horst Balthasar, Nazaret Bello Gonza...
astro-ph.IM astro-ph.SR