Strassmeier, K. G., Pallavicini, R., and the PEPSI/ICE team

The "PEPSI with ICE"-Echelle spectropolarimeter for the LBT

We lay out the scientific rationale for and present a conceptual design of 
a high-resolution adaptive-optics Echelle spectrograph with two 
full-Stokes polarimeters for the Large Binocular Telescope (LBT) in 
Arizona. The unique design and large aperture of 2x8.4m of the LBT 
will allow the simultaneous observation of circularly and linearly 
polarized light with high spectral and time resolution. Each telescope 
will be equipped with an independent polarimeter in their direct f/15 
Gregorian focii and four fibres will enter a single bench-mounted Echelle 
spectrograph located in a temperature-controlled environment. Besides the 
polarimetric mode the spectrograph can also be fed directly with integral 
light including an adjacent sky position on one telescope and a 
calibration spectrum for accurate radial velocity determination on the 
other telescope.