An optical VLA on the Moon

Astronomy and Astrophysics – Astronomy

Scientific paper

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Atmospheric Effects, Interferometry, Lunar Atmosphere, Refractivity, Synthetic Arrays, Telescopes, Very Large Array (Vla), Angular Resolution, Bending, Gravitation, Lunar Bases, Perturbation, Radio Astronomy, Vibration, Visual Observation

Scientific paper

Optical observations on the Earth must cope with the refractive disturbances of the atmosphere, perturbations by the day-to-night thermal cycle, vibrations induced by the wind, and the bending of the telescope by gravity. These all conspire to limit telescope performance. In particular, in trying to improve angular resolution, there seems to be a practical limit of the order of a few tenths of an arc-second for the realizable angular resolution of single-aperture telescopes, largely imposed by the atmosphere, although other structural limitations would appear as limits at one-tenth of an arc-second or so.

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