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Perseid meteor observations

During the annual peak of the Perseid meteor shower, a meteor observation took place at the National Astronomical Observatory Rozhen.
The image below shows the radiant of the meteor shower in the constellation of Perseus.
The image is combined from 21 individual subframes (each 2 minute exposed) taken on August 12th 2010 with Canon 40D digital camera and 10 mm lenses at f/4.0 .

Meeting organized by Bulgarian Academy of Sciences in support of the Bulgarian science

On 18 May 2010, 10:30 LST the Bulgarian Academy of Sciences organize a meeting in support of the Bulgarian science. The National Astronomical Observatory Rozhen symbolic supports this act of protest and stand on a par with the rally participants.

Main meteor showers for 2009

Main meteor showers for 2009

A list of the papers by years published by members of the Department “Sun” (1984-2010)

Here is a list of the papers by years published by members of the Department “Sun” (1984-2010), as well as earlier solar publications made in the Institute of Astronomy and in Department “Astronomy” of the Faculty of Physics of Sofia University “St. Kliment Ohridski”. 

New Lyot coronagraph at NAO – Rozhen: presents and perspectives

 

New Lyot coronagraph at NAO – Rozhen: presents and perspectives
Petrov N., Duchlev P., Kokotanekova J.
Institute of Astronomy, Bulgarian Academy of Science, Sofia, Bulgaria, nikipetrov@yahoo.com
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 its testing and improving during the observations are presented. The results from the observations quiescent and active prominences are presented and discussed, too. The scientific objectives and future applications of the coronagraph are considered.
 
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