Potsdam Echelle Polarimetric and Spectroscopic Instrument for the LBT
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Top-down view of the two 8,4 m LBT mirrors and the instrument platform in between. Notice that both secondary mirrors were moved out of the way and cannot be seen in this picture.

Credit: LBTO

PEPSI was developed at AIP and is the high-resolution optical echelle spectrograph for the Large Binocular Telescope (LBT) in Arizona. The light from the LBT's two 8.4 m mirrors is guided to the spectrograph via two permanently mounted focal stations (PFUs) and optic fibres. The combination of advanced optical components and image splitting allows a spectral resolution of up to 250,000 while covering the entire optical wavelength range without gaps.

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Last update: 9. February 2021