The Arecibo 5 GHz Mini-Gregorian Feed System - Spectral line performance

Details The Arecibo 5 GHz Mini-Gregorian Feed System - Spectral line performance The Arecibo 5 GHz Mini-Gregorian Feed System - Spectral line performance

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pasp..105..894m&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 105, no. 690, p. 894-901.

Astronomy and Astrophysics

Astronomy

2

Astronomical Observatories, Radio Astronomy, Spectral Bands, Telescopes, Absorption Spectra, Formaldehyde, High Electron Mobility Transistors, Molecular Clouds, Radio Telescopes

Scientific paper

The Mini-Gregorian Feed System at the Arecibo Observatory allows the highest resolution observations at 5 GHz of any single-dish radio telescope in the world. This system is a small-scale test instrument for the full Gregorian Upgrade which is currently in progress at Arecibo. We describe the performance of the Mini-Gregorian Feed in the 4.4-5.1 GHz range. This spectral range is important in radio astronomy for a number of reasons (e.g., one of the original VLA bands is at 6 cm). From a spectral line perspective, this band is important because of the presence of the 1(10)-1(11) transition of formaldehyde, a standard medium-density molecular cloud tracer.

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