RESEARCH, DESIGN, AND FABRICATION OF AN IMAGE TUBE FOLDED SCHMIDT SPECTROGRAPH

摘要

A spectrograph has been designed and constructed that will accommodate either the RCA cascaded image tube or an electron graphic image tube if the photocathode can be opera-ted near ground potential.nThe spectrograph is a grating one with an on-axis collimator, pierced grating and Schmidt camera. The complete spectrograph body is cradled in a frame that attaches to the telescope. The dispersions are 50 and 100 A/mm.