Spectrograph providing spectral reference marks

A slitless spectrograph simultaneously records spectra of transient or moving light sources along with spectral references marks positioned alongside the spectra for calibration of unknown spectral lines. The reference marks are provided by groups of optical components which cause undispersed light...

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Bibliographic Details
Main Author BUCHANAN; WILLIAM T
Format Patent
LanguageEnglish
Published 10.04.1984
Subjects
COLORIMETRY
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
PHYSICS
RADIATION PYROMETRY
TESTING
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Summary:A slitless spectrograph simultaneously records spectra of transient or moving light sources along with spectral references marks positioned alongside the spectra for calibration of unknown spectral lines. The reference marks are provided by groups of optical components which cause undispersed light from the unknown source to be focused on a film above or below the spectrum. The angles at which the light beams creating the references marks strike the grating of the spectrograph are specifically selected such that the rate of movement of the reference marks caused by a change in the incident angle of light from the light source into the spectrograph is related to the rate of change of the position of dispersed light which falls at the position of the reference mark when the spectrograph is precisely aimed at the light source.
Bibliography:Application Number: US19810306517