Pointing also describes how accurately a telescope can be pointed toward a particular direction in the sky. For example, the pointing of the BIMA antennas can be affected by strong winds which cause the antennas to move about slightly. Radial Velocity the speed at which an object is moving away or toward an observer. Radio Map an image of the sky made from radio waves . Radiotelescope a telescope that observes radio waves from space and turns them into images.
Radio Waves a form of light with a frequency that is much lower than visual light.
Realtime Observational Astronomy the fast processing of signals from a telescope to turn them into an images at the same time that the observations are being made. Traditionally, it could take astronomers several hours or days to create radio images from interferometer data. Supercomputers and fast networks have the potential to remove this delay, so that astronomers can look at the images as the data is recorded. The closer to two objects can be while still allowing the telescope to see them as two distinct objects, the higher the resolution of the telescope. Similar to spatial resolution except that it applies to frequency, spectral resolution is the ability of the telescope to differentiate two light signals which differ in frequency by a small amount.