An automated slit-mask handling system allows selection from a minimum of five masks (6 goal) to be used during a single loading of the handler. The design parameters for the f/11 focal surface are:
plate scale: 346.77 microns/arc-sec 2.88 arc-sec/mm
field of view: 30 arc-min dia (620 mm) (24.42 inch dia.)
1800 arc-sec dia.
field area: 706.8 arc-min2
2.54E6 arc-sec2
focal surface Rc -1231.74 mm (convex) (48.49 inches)
sagitta 39.7 mm (1.56 inches)