The GREGOR Fabry Perot Interferometer (GFPI), Technical Innovations and   Results achieved in 2013
  This paper shall provide a summary of not yet published technical innovations to the GREGOR Fabry-Perot Interferometer (GFPI) at the 1.5m GREGOR Solar Telescope (Europe's largest solar telescope) that I implemented in 2013 as the Instrument Scientist of the GFPI. It also represents an overview of important and not yet published observational results that I achieved with the GFPI in 2013. The results and achievements can be considered a milestone in the further development, scientific verification and final acceptance of this instrument. The instrument is now in operation and employed by the international scientific community. 
Klaus Gerhard Puschmann
astro-ph.SR astro-ph.IM