Kneer, F.F.KneerHirzberger, J.J.Hirzberger2018-11-072018-11-072001https://resolver.sub.uni-goettingen.de/purl?gro-2/31032Fabry-Perot interferometers (FPIs) are powerful instruments for spectro-polarimetry of the Sun with high spatial resolution. They allow easy image reconstruction of two-dimensional fields of view. Some examples of high quality results obtained with the "Gottingen" FPI spectrometer, mounted in the Vacuum Tower Telescope at the Observatorio del Teide/Tenerife, are presented in a poster to this workshop. We thus concentrate on the design of a new instrument for the 1.5 m GREGOR solar telescope. We discuss the pros and cons of telecentric and collimated mounting and describe the expected performance, especially the spectral resolution, of our design.conference_paper000173097200019