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Bulgarian Journal of Physics
Print: 1310-0157 Online: 1314-2666
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RECOGNIZED BY THE EUROPEAN PHYSICAL SOCIETY 
Bulg. J. Phys. vol.34 no.s2 (2007), pp. 86- 94
First Results from Coronagraph Observations at the NAO-Rozhen
N. Petrov1, P. Duchlev1, J. Kokotanekova1, B. Rompolt2
1Institute of Astronomy, Bulg. Acad. Sci., Sofia 1784, Bulgaria
2Astronomical Institute of Wroclaw University, ul. Kopernika 11, PL 51-622, Wrocalw, Poland
go back1Institute of Astronomy, Bulg. Acad. Sci., Sofia 1784, Bulgaria
2Astronomical Institute of Wroclaw University, ul. Kopernika 11, PL 51-622, Wrocalw, Poland
Abstract. A new Lyot type coronagraph for prominence observations was assembled in June 2005 at the National Astronomical Observatory - Rozhen, Bulgaria. A short description and parameters of the instrument, as well as other solar facilities are presented. The preliminary results from quiescent and active prominences are presented and discussed. The observing program related to science objectives of the solar section of the Institute of astronomy, Bulgarian Academy of Sciences is considered.