CODEX optics

Bernard Delabre; Antonio Manescau

doi:10.1117/12.856949

20 July 2010 CODEX optics

Bernard Delabre, Antonio Manescau

Proceedings Volume 7735, Ground-based and Airborne Instrumentation for Astronomy III; 77355J (2010) https://doi.org/10.1117/12.856949
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

CODEX is a high resolution spectrograph for the ESO E-ELT. A classical spectrograph can only achieve a resolution of about 120.000 on a 42 m telescope with extremely large echelle gratings and cameras. This paper describes in detail the optical concept of CODEX, which uses only optical elements size similar to those in current high resolution spectrographs. This design is based on slicers, anamorphic beams and slanted VPHG as cross dispersers. In this new version of the CODEX design, no special expensive materials as calcium fluoride or abnormal dispersion glasses are needed. The optical quality is excellent and compatible with 10K x 10K detectors with 10 μm pixels.

Citation Download Citation

Bernard Delabre and Antonio Manescau "CODEX optics", Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77355J (20 July 2010); https://doi.org/10.1117/12.856949

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