Abstract
A satellite-borne extreme-ultraviolet airglow spectrometer is described covering the 275–1420-Å range with 8-Å resolution. The spectrometer is of near normal incidence Rowland circle design and employs a holographically ruled concave grating. The detector is a microchannel plate with resistive anode providing a continuous readout of any 650-Å ground-commandable subset of the total bandpass. This simultaneous wide spectral coverage results in a factor of 80 increase in sensitivity over a fixed exit slit design of equivalent resolution.
© 1981 Optical Society of America
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