The 2-m RCC Telescope The major device at the NAO is the 2-meter Ritchey-Chretien-Coude telescope with a modern light detector – a CCD camera. This is the largest telescope in Southeast Europe. It is used to observe different types of stars, star clusters, nebulas, galaxies, planets, asteroids, and comets. Because of the universal optic system of the telescope, besides photometric observations for obtaining direct images, spectral observations can be made for studying the chemical composition of objects. On the basis of such observations, some important findings have been reported: The research of MWC560 has led to the identification of a new class of symbiotic double systems. The globular star clusters research project has led to a better understanding of their morphology and dynamic characteristics. On November 24, 1985 the first European photograph of Halley’s comet was made at the Rozhen NAO. For several years active photometric observations of comets are being made with a focal reducer, one of the new additions to the telescope, in order to learn more about their astrophysical characteristics.
		The 60-cm Cassegrain Telescope The telescope is of the Cassegrain type and works with an electrophotometer to receive the light radiated by objects in the sky. It is used to research variable stars mainly, as well as for observation with the purpose of determining the physical characteristics of asteroids. Sometimes observations are made simultaneously with the 2-meter telescope.
		The 50/70-cm Schmidt Telescope One of the smaller telescopes is a wide-angle Schmidt telescope with a large field of view. It is used for observations of galaxies, asteroids, comets and exploding stars. It has been rigged with a modern CCD camera as a result of a joint Bulgarian-Macedonian project. It was used for the first systematic observations at the Rozhen NAO more than 20 years ago, which involved positional observations of asteroids. There is also a project dealing with the search for new asteroids. The first new asteroid observed at the Rozhen NAO in 1983 was named after John Atanasov, the inventor of the modern computer. The observatory used this telescope as a part of an international project to warn the public about a potential clash of dangerous asteroids or comets with the Earth. The staff also works on projects related to dwarf galaxies, which are difficult to observe and are visible through the Milky Way. Dozens of exploding stars in open star clusters have been found.
		The Solar Telescope Presently this telescope is in the process of being assembled and completed and it will be soon mounted in the astronomic tower that has been especially built at the Rozhen NAO. In fact, there will be two solar telescopes working together – a coronagraph and a spectral observation telescope. The 15-centimeter solar telescope-coronagraph will be used to observe solar prominences. This will allow the development of physical models to interpret the physical nature of these phenomenons. The second instrument, a 13- centimeter photosphere telescope, can be used to identify changes in the physical parameters (magnetic fields, electron density, Doppler velocities, temperature, polarization) of active regions on the Solar disc.