Title Page
Contents
Extragalactic astronomy
Relative momentum–Mass and Absolute magnitude–Maximal rotational velocity relations for some types of active galaxies
G. T. Petrov, V. A. Mineva (in Bulgarian)
Masses and rotational momenta of 84 Markarian and 13 normal galaxies
V. A. Mineva, G. T. Petrov (in Bulgarian)
Surface photometry of the spiral arms of M51
G. R. Ivanov, M. S. Toropova
Galaxies in voids with the 2-m RCC telescope of NAO Rozhen
G. T. Petrov
On the possible nature of the intermediate type Seyfert galaxy spectra
V. Popov (in Russian)
Observations of the Double Quasar 0957+561 at the Rozhen NAO following the JOMPQ collaboration
G. Petrov, A. Strigachev, B. Mihov
Systematics of relativistic objects with event horizons (otons) and variety of otonic worlds
A. P. Trofimenko (in Russian, Summary in English)
Observational features of D-bodies (white holes)
A. P. Trofimenko (in Russian, Summary in English)
Surface photometry of barred active galaxies. Wolf-Rayet galaxy NGC 6764
G. Petrov, L. Slavcheva
Digital processing of extended astronomical images
Ts. B. Georgiev (in Russian)
Stars and Stellar systems
On the photometric calibration of stellar spectrogramm
T. Tomov, Ja. Bellas, D. Kolev (in Russian, Summary in English)
A study of the color equation of the 2-m RCC telescope
N. M. Spassova, A. Antov (in Bulgarian)
Influence of the instrumental polarization of the 2-m telescope at NAO Rozhen on the measurements of stellar magnetic fields
D. Kolev, I. Stateva (in Russian, Summary in English)
Scanning of stellar images by a slit diaphragm and estimation of their parameters.
I. Approximation of turbulent disks by a Gaussian distribution
D. V. Dimitrov
Scanning of stellar images by a slit diaphragm and estimation of their parameters.
II. Smoothing of stellar images having a quasi-Gaussian intensity distribution
D. V. Dimitrov
Red variable stars in the galactic globular clusters. I. General characterization
R. M. Russev (in Russian, Summary in English)
Sun and Solar system
Influence of the dissipative effects on the motion of a binary system
V. S. Mileva (in Russian)
Large-scale motions of the solar quiescent filaments and the torsional oscillations of the Sun
V. N. Dermendjiev, P. I. Duchlev, K. P. Velkov, E. B. Zlateva
Instrumentation, methods, and techniques
A photographic camera to the 600/7500 mm telescope. Construction and investigation
R. M. Roussev, G. T. Petrov, T. S. Rousseva
Bulletin of the National Astronomical Observatory
A Supplement to the Journal