If Suppose astronomers are interested in obtaining an image of a large area in the sky which radiation should astronomers observe if they want to get images 24 hours a day quickly and cheaply why?

Answer 1

Astronomers should observe in the radio wavelengths for imaging large areas of the sky quickly and cheaply, as radio telescopes can operate continuously, day or night, regardless of weather conditions. Unlike optical telescopes, which depend on clear skies and daylight, radio waves can penetrate clouds and are not affected by light pollution. Additionally, radio observations are often less expensive in terms of equipment and operation compared to other wavelengths, making them a practical choice for large-scale sky surveys.