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- Title
Enhancing Sensitivity of Methane Detection in Exoplanet Atmospheres and Nebulas Using Spectroscopic Methods.
- Authors
Tolmachev, Yu. A.; Ivanov, M. P.; Glukhov, V. A.
- Abstract
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.
- Subjects
METHANE; MOLECULAR spectra; EXTRASOLAR planets; FRESNEL lenses; FABRY-Perot interferometers
- Publication
Technical Physics, 2018, Vol 63, Issue 3, p427
- ISSN
1063-7842
- Publication type
Article
- DOI
10.1134/S1063784218030234