Observatory development refers to the design, construction, and operation of astronomical observatories for the purpose of observing and studying celestial objects such as stars, galaxies, and planets. This research area involves a multidisciplinary approach that combines expertise in astronomy, engineering, and technology to create state-of-the-art facilities that can collect data from the universe. Observatory development typically involves the construction of telescopes, spectrographs, detectors, and other instruments that can capture and analyze light from distant objects. Observatories may be ground-based, located on Earth, or space-based, orbiting the Earth or other celestial bodies. The goal of observatory development is to create instruments and facilities that can provide valuable data and insights into the nature of the universe, helping astronomers to better understand the origins, evolution, and composition of celestial objects. This research area is essential for advancing our knowledge of the cosmos and furthering our understanding of the universe.