A spectropolarimetric focal station for the ESO E-ELT

摘要

We present a conceptual design for a spectropolarimetric focal station for ESO's European Extremely Large Telescope(E-ELT). It uses the intermediate f/4.4 focus, the only symmetric focus of the telescope. A dual channel, full Stokesvectorpolarimeter provides on-axis light for the wavelength range 380-1600nm to up to two spectrographssimultaneously via two pairs of fibers. With such spectropolarimetric capability and a proper spectrograph for the opticaland the near infrared wavelengths, the E-ELT would be able to provide the full parameter space of an incomingwavefront. Because of the on-axis entrance location of the polarimeter collimator and an entrance aperture of just 1.3arcsec, the expected poor image quality of the intermediate telescope focus is not directly relevant.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.