Instrument Host Overview
  ========================
  
  The following information comes from the NRAO website
  (https://public.nrao.edu/about-the-observatory/):
  
  The National Radio Astronomy Observatory (NRAO) 'is funded by the National 
  Science Foundation (NSF) under the terms of a cooperative agreement 
  between the NSF and Associated Universities, Inc. (AUI), a science 
  management corporation.'

  'The NRAO operates a complementary suite of powerful telescopes for 
  exploring the Universe: 
  - Robert C. Byrd Green Bank Telescope (GBT), the world's most sensitive 
  single-dish radio telescope.
  - Karl G. Jansky Very Large Array (VLA), an array of 27 radio telescopes 
  that is among the most productive research tools in astronomy.
  - Very Long Baseline Array (VLBA), an array of 10 radio telescopes and the 
  highest resolution astronomical telescope.
  - Atacama Large Millimeter/submillimeter Array (ALMA), a partnership with 
  Europe, Japan, and Chile that will be available to the U.S. and Canadian 
  astronomical communities through the North American ALMA Science Center 
  (NAASC).'
  
  See 'Observing With The Green Bank Telescope' [BALSERETAL2015] for more
  information on the NRAO's Green Bank telescope.