In the Rhodope Mountains at that time

Evgeny L. Chentsov

Tests of the optical system of the 50/70/172 cm

Schmidt telescope at Rozhen NAO

Pencho D. Markishki

Studying of galactic open clusters at Rozhen NAO:

Joint Bulgarian-German project

Georgi Petrov

Studying of space voids at Rozhen NAO:

Joint Bulgarian-German project

Georgi Petrov

2012

e-mail for submition:
pasb@shu.bg

In Bulgarian

Greeting message devoted on the 30th anniversary of the Rozhen NAO; in Russian

Bulgarian Astronomical Society

Publications
of the Astronomical Society
of Bulgaria

PASB