Construction and setting up of a lamellar grating with a very wide spectral range and its use as a Fourier spectrometer for astrophysical measurements on large molecules

Details Construction and setting up of a lamellar grating with a very wide spectral range and its use as a Fourier spectrometer for astrophysical measurements on large molecules Construction and setting up of a lamellar grating with a very wide spectral range and its use as a Fourier spectrometer for astrophysical measurements on large molecules

Sep 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978csul.rept.....h&link_type=abstract

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Physics

Optics

Astronomical Spectroscopy, Fourier Law, Gratings (Spectra), Molecular Spectra, Spectral Resolution, Coriolis Effect, Cyanides, Fabry-Perot Interferometers, Methyl Compounds

Scientific paper

This instrument covers a wider spectral range than a Michelson interferometer and does not suffer from polarization effects. Coherent optics theory is used to calculate boundary conditions for maximum modulation. A 50 to 500 per cm wavenumber region can be covered for astronomical observations not exceeding one milli sq cm delta t. The grating constant is 0.5 cm and the resolution 0.05/cm. Two specific examples are investigated. These are measurement of the relative transmission and spectral resolution of a Fabry-Perot interferometer and determination of the Coriolis factors associated with the nu sub(8) vibration-rotation CH 3 CN band.

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