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The optical layout of the WHT is shown in Figure gif. Tables gif and gif give the optical characteristics of the Prime, Cassegrain and Nasmyth foci. Spot diagrams and vignetting curves for the f/11 focal stations of the WHT are given in Figures gif and gif. Spot diagrams for prime focus at various positions of the Atmospheric Dispersion Compensator are given in the WHT Prime Focus and Imaging Manual. A more detailed optical description is given in La Palma Technical Note 9.

Tue Aug 15 16:42:46 BST 1995