NASA NTRS · 19730012999
Far infrared astronomy
Abstract
The research to develop a spectrometer to be used with a ground based telescope is described. Two liquid helium cooled infrared spectrometers were designed and built. The first, has a Cassegrain optical system and a variable focal length between 51.4 cm and 92.6 cm. It is capable of a resolution of 500. The second, has a focal length of 19.1 cm and has a resolution of 100. Both spectrometers have been operated at 10-30 microns. Sample spectra are included.
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Houck, J. R.. 1973-01-01. Far infrared astronomy. https://ntrs.nasa.gov/citations/19730012999
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