NASA NTRS · 19680031232
An echelle spectrometer-spectrograph for astronomical use.
Abstract
Echelle spectrometer-spectrograph designed for Cassegrain focus of 91 cm telescope, discussing potential for stellar and nebular studies
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Schroeder, D. J.. 1967-11-01. An echelle spectrometer-spectrograph for astronomical use.. https://ntrs.nasa.gov/citations/19680031232
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