Two-degree FOV prime focus corrector and ADC concepts for the 4.2m WHT

Tibor Agócs; Marc Balcells; Chris R. Benn; Don Carlos Abrams; Diego Cano Infantes

doi:10.1117/12.856881

20 July 2010 Two-degree FOV prime focus corrector and ADC concepts for the 4.2m WHT

Tibor Agócs, Marc Balcells, Chris R. Benn, Don Carlos Abrams, Diego Cano Infantes

Proceedings Volume 7735, Ground-based and Airborne Instrumentation for Astronomy III; 773563 (2010) https://doi.org/10.1117/12.856881
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

We present two conceptual optical designs for a new refractive corrector for the prime focus of the 4.2m William Herschel Telescope, optimised to allow wide-field multi-object spectroscopy. The proposed designs satisfy the demanding requirement that the PSF be smaller than 0.5 arcsec (80% encircled energy) over a two degree FOV and a wavelength range of 370 - 1000 nm. We discuss the specifications and describe the design process for the correctors, which also act as atmospheric dispersion correctors (ADC). The designs we present form the basis of a realistic manufacturable system.

Citation Download Citation

Tibor Agócs, Marc Balcells, Chris R. Benn, Don Carlos Abrams, and Diego Cano Infantes "Two-degree FOV prime focus corrector and ADC concepts for the 4.2m WHT", Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 773563 (20 July 2010); https://doi.org/10.1117/12.856881

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