Ultraviolet observatories of the future

Abstract

The ultraviolet spectral region is extremely important for studying astrophysical objects in a wide temperature range of 3000 to 300000 K. Over the past three decades, several tens of space experiments were conducted and space observatories were injected into orbit for observing objects in the ultra violet (UV) spec tral region. Works on next generation UV missions are now in progress in Europe, the United States, and Russia. A summary of requirements for these missions and a brief description of the main projects are pre sented.