ESPRESSO APSU: simplify the life of pupil slicing

P. Conconi; M. Riva; F. Pepe; F. M. Zerbi; A. Cabral; S. Cristiani; D. Megevand; M. Landoni; P. Spanó

doi:10.1117/12.2024843

30 September 2013 ESPRESSO APSU: simplify the life of pupil slicing

P. Conconi, M. Riva, F. Pepe, F. M. Zerbi, A. Cabral, S. Cristiani, D. Megevand, M. Landoni, P. Spanó

Proceedings Volume 8842, Novel Optical Systems Design and Optimization XVI; 88420P (2013) https://doi.org/10.1117/12.2024843
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

This paper presents the Espresso Anamorphic pupil Slicer (APSU) implementation. ESPRESSO, the Echelle SPectrograph for Rocky Exoplanets and Stable Spectroscopic Observations, will be installed on ESOs Very Large Telescope (VLT). In this work we will present the design and trade-off for the pupil slicing system introduced in order to increase the resolving power, effectively decreasing slit width. Its based onto simplified optical component that introduce large anamorphism while keeping low aberrations by means of cylindrical optics. We describe here the trade-off between slicing through two adjacent squared doublets and two achromatic prisms.

Citation Download Citation

P. Conconi, M. Riva, F. Pepe, F. M. Zerbi, A. Cabral, S. Cristiani, D. Megevand, M. Landoni, and P. Spanó "ESPRESSO APSU: simplify the life of pupil slicing", Proc. SPIE 8842, Novel Optical Systems Design and Optimization XVI, 88420P (30 September 2013); https://doi.org/10.1117/12.2024843

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