Astronomers come from many backgrounds and countries and include both women and men. They have generally studied physics and astronomy in college and have then gone to graduate school for more specialised course work. Some are professors, people with a deep passion for understanding what the Universe is like and how it works.
Astronomers use telescopes to collect radiation from astronomical sources.
When astronomers want to observe at a telescope, they do not just run to the observatory. Generally they must submit an observing proposal that describes what objects they wish to look at and why such observations are important. If the proposal is accepted, the astronomers must prepare for the observing run, being sure that all necessary equipment will be available. If the observing runs go smoothly, the astronomer can return to his or her home institution laden down with data. In the last few decades, the computer has become one of the astronomer's most important tools.