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

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

Ground-based and Airborne Instrumentation for Astronomy III. Edited by McLean, Ian S.; Ramsay, Suzanne K.; Takami, Hideki. Proceedings of the SPIE, Volume 7735, pp. 773563-773563-11 (2010).

Fecha de publicación:
7
2010
Número de autores
5
Número de autores del IAC
0
Número de citas
0
Número de citas referidas
0
Descripción
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.