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- Title
Computation of the polarization characteristics of RATAN-600 in the 'Southern sector with a flat reflector' mode with the diffraction effects considered.
- Authors
Majorova, E.; Opeikina, L.
- Abstract
We report the Mueller matrix elements for RATAN-600 computed with the allowance for the diffraction effects in the space between the main, secondary, and flat mirrors in the Souther sector with a flat reflector ('South+flat') observing mode and in the mode of single-sector observations at the horizon throughout the entire operating wavelength range. We show that the vertical size of the M and M elements decreases, the elements shift relative to the central horizontal section, and the lobe structure of the elements changes with increasing wavelength. In the 'South+flat' mode these changes, which are due to diffraction effects, begin to show up at shorter wavelength compared to the single-sector mode. We investigated the variation of the structure of the elements M and M with the elevation angle of the flat reflector and in the case of longitudinal and transversal off-focus offsets of the primary feed.
- Subjects
REFLECTING telescopes; OPTICAL diffraction; WAVELENGTHS; TELESCOPES; OPTICS
- Publication
Astrophysical Bulletin, 2011, Vol 66, Issue 2, p215
- ISSN
1990-3413
- Publication type
Article
- DOI
10.1134/S1990341311020088