public.nrao.edu
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The NRAO Public site is the public-facing hub of the National Radio Astronomy Observatory, offering educational resources, news, outreach materials, and visitor information about radio astronomy and its facilities (VLA, GBT, VLBA).
More resources on Radio & Multiwavelength
ALMA Science Portal
Operational hub for the Atacama Large Millimeter/submillimeter Array: technical handbooks, proposal preparation tools, sensitivity calculators, CASA reduction guides, and the public science archive. Users learn how millimetre interferometric observations are proposed, calibrated, and retrieved for their own analysis.
Tools of Radio Astronomy
Standard graduate reference on the instrumentation and physics behind radio observations: antenna theory, receivers, interferometry and aperture synthesis, plus continuum and spectral-line emission mechanisms. Readers learn how radio telescopes turn incoming signals into calibrated astrophysical measurements.
almaobservatory.org
ALMA Observatory is the official site for the Atacama Large Millimeter/submillimeter Array, detailing its radio/millimeter-wavelength capabilities, science goals, and how to access data. It also provides educational resources, news, and outreach material for learning about multiwavelength astronomy.