No CrossRef data available.
Published online by Cambridge University Press: 25 April 2016
Observations of non-variable sources of astronomical interest can be ideally undertaken at national radio astronomy observatories whenever possible. By contrast observations of variable sources at sporadic intervals of time, taken at the same observatories, can provide the interest/impetus to observe these sources as often as possible. Since national observatories are overloaded with requests for observations of diverse nature, observations of variable sources cannot be undertaken at these observatories on a daily basis. In consequence dedicated telescopes are required for the continuous monitoring of variable sources.