Bulg. J. Phys. vol.19 no.1-2 (1992), pp. 042-047

Calibration of uvby Photoelectric System in AO Belogradchik

N. Kaltcheva, L. Georgiev, M. Ivanov
Departmrnt of Astronomy, Faculty of Physics, University of Sofia, 5, J. Bourchier Blvid, Sofia 1126, Bulgaria
Abstract. In this paper the calibration of the uvby system established in AO Belogradchik is presented.

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