nsfw:racy: Possible ocr: CDS INSTRUMENT CDS is the twin spectrometer, operating in the extreme ultraviolet range (151-785A). Only one is used at any point in time. NIS (Normal Incidence Spec- trometer) is stigmatic. It makes use of a toroidal grating system toi image long, thin slits ona2- dimensional detector. With NIS one can build up an image of - portion of the Sun in all lines which one chooses to telemeter tot the ground. CDS splits ultraviolef computer light controlled into its constituent felescope parts using a state-of-the-art opfical GIS Grazing Incidence Spec- system, With CDS one can examine trometer) is ...
