Imaging telescope-spectrometer for infrared sky surveys

Details Imaging telescope-spectrometer for infrared sky surveys Imaging telescope-spectrometer for infrared sky surveys

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995spie.2480..248m&link_type=abstract

Proc. SPIE Vol. 2480, p. 248-256, Imaging Spectrometry, Michael R. Descour; Jonathan M. Mooney; David L. Perry; Luanna R. Illing

Physics

Scientific paper

A new type of imaging telescope-spectrometer for surviving the sky aboard a satellite is described. A static Michelson interferometer in front of an objective with 2D-arrays in its focal plane is capable of providing interferograms both for point and extended sources. As an example, the telescope-spectrometer based on the 15-cm telescope of the IKON project and a plane-parallel Ge plate as a beamsplitter may have approximately equals 30 cm(superscript -1 spectral resolution in the range 3 - 20 micrometers . For higher resolution, such an objective interferometer has advantage over a dispersion spectrometer in the signal-to-noise ratio and is free from the disadvantage of an objective prism not providing spectra of extended sources.

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