A unique grazing incidence spectrometer system has been designed to study diffuse line emission between 80 and 650 Å with 10–30 Å resolution. The minimum detectable emission line strength during a 5-min observation ranges from 100–2000 ph cm-2 sec-1 str-1. The instrument uses mechanically ruled reflection gratings placed in front of a linear array of mirrors. These mirrors focus the spectral image on microchannel plate detectors located behind thin filters. The field of view is 40 min of arc by 15°, and there is no spatial imaging. This instrument has been fabricated, calibrated, and successfully flown on a sounding rocket to observe the astronomical background radiation.
© 1989 Optical Society of America
Simon E. Labov, "Spectrometer system for diffuse extreme ultraviolet radiation," Appl. Opt. 28, 5073-5079 (1989)