Radio Universe: Sky Surveys

This lecture covers the concept of sky surveys in the radio universe, explaining observations of the universe, celestial coordinate systems, equatorial and ecliptic coordinates, celestial spheres, and examples of all-sky surveys like X-ray and CMB maps. It also delves into the size of the target and field of view, observation set-up, sensitivity, types of observations, and examples of optical and radio surveys, such as the NRAO VLA Sky Survey and Meerkat. The lecture concludes with a discussion on 3D mapping of galaxies in the universe.