The Gregorian Upgrade at Arecibo and its Impact on Some Aspects of Extragalactic Research
The performance of the 305m telescope at Arecibo is flawed with a number of limitations that are related with the current optical design. These shortcomings are correctible with the replacement of line feeds with a Gregorian subreflector system and the construction of a ground shield around the edge of the main reflector. The upgrade will substantially increase the sensitivity of the telescope and allow optimal implementation of advances in electronic technology. Its potential impact on selected topics of extragalactic spectroscopy is discussed in some detail.
KeywordsZenith Angle Line Feed Main Reflector Illumination Pattern Ground Radiation
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