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Summary of mechanical performance

Table: Summary of mirror characteristics for the INT

Table: Optical characteristics of INT foci


Figure: Spot diagrams for images at the f/15 Cassegrain focus of the INT, showing the dependence on field radius and the effects of defocussing.


Figure: Spot diagrams for the prime focus of the INT with the three-element corrector at different wavelengths and field radii. The scale is shown by a circle of radius 1.0 arcsec.

Tue Aug 15 16:42:46 BST 1995