20 July 2010 Two-degree FOV prime focus corrector and ADC concepts for the 4.2m WHT
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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.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tibor Agócs, Tibor Agócs, Marc Balcells, Marc Balcells, Chris R. Benn, Chris R. Benn, Don Carlos Abrams, Don Carlos Abrams, Diego Cano Infantes, 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); doi: 10.1117/12.856881; https://doi.org/10.1117/12.856881


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