30 June 2006 Preliminary optical design for a 2.2 degree diameter prime focus corrector for the Blanco 4 meter telescope
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Abstract
We describe a five element corrector for the prime focus of the 4 meter Blanco telescope at the Cerro Tololo Inter-American Observatory (CTIO) in Chile that will be used in conjunction with a new mosaic CCD camera as part of the proposed Dark Energy Survey (DES). The corrector is designed to provide a flat focal plane and good images in the SDSS g, r, i, and z filters. We describe the performance in conjunction with the scientific requirements of the DES, particularly with regard to ghosting and weak-lensing point spread function (PSF) calibration.
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S. Kent, R. Bernstein, T. Abbott, B. Bigelow, D. Brooks, P. Doel, B. Flaugher, M. Gladders, A. Walker, and S. Worswick "Preliminary optical design for a 2.2 degree diameter prime focus corrector for the Blanco 4 meter telescope", Proc. SPIE 6269, Ground-based and Airborne Instrumentation for Astronomy, 626937 (30 June 2006); doi: 10.1117/12.672097; https://doi.org/10.1117/12.672097
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