Enhancing Sensitivity of Methane Detection in Exoplanet Atmospheres and Nebulas Using Spectroscopic Methods

Yu A. Tolmachev, M. P. Ivanov, V. A. Glukhov

Research output


Technical development of optimal methods for detection of simple gas-phase molecules using rovibrational or rotational spectra by the simultaneous detection of several spectral lines of a molecular band with the aid of a comb filter is considered. Two variants for implementation of the methods are based on a spectrometer with the echelle grating with a limited number of elements and Fresnel lens (mirror) with specific ring components that serves as a grating. The Fresnel filter can be matched with the parameters of optics of astronomic instrumentation in the absence of a decrease in the effective aperture.

Original languageEnglish
Pages (from-to)427-433
Number of pages7
JournalTechnical Physics
Issue number3
Publication statusPublished - 1 Mar 2018


Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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