Supplement Volume 1 (2012)

• Tests of the optical system of the 50/70cm Schmidt telescope in Rozhen NAO.

Pencho Dimitrov Markishki

• Open clusters in our Galaxy: A joint Bulgarian-German project 

Georgi Petrov

• Studying of selected voids: A joint German-Bulgarian project

Georgi Petrov

• In the Rhodope Mountains at that time

Evgeny L. Chentsov (Greeting message)

• Contemporary concept of the Galaxy structure: I. General picture

Tsvetan B. Georgiev, Orlin Stanchev, Jose Concejo

• Contemporary concept of the Galaxy structure: II. The Galaxy disk

Jose Concejo, Orlin Stanchev, Tsvetan B. Georgiev