The Institute of Astronomy of the Bulgarian Academy of Sciences is a leading Bulgarian research facility in the field of astronomy and astrophysics, located in Sofia, Bulgaria.
The Institute owns and operates the Rozhen Observatory, located in the Rhodopi mountains in South-East Bulgaria.
The institute was inaugurated in 1958, as an independent section of the larger Institute of Physics of BAS by academician Nikola Bonev. In 1995, it becomes a separate institute.
The researchers in the institute work in 7 sectors, each of them specialized in a specific astronomical field: "Sun", "Solar system", "Non-stationary stars", "Stellar atmospheres and envelopes", "Chemically peculiar stars", "Stellar clusters" and "Galaxies"