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M87 globular clusters BVI photometry
We present CCD photometry in B, V, and I for a sample of globular clusters in the Virgo central giant elliptical galaxy M87. Our measured sample comprises 270 objects brighter... -
NGC 1866 CCD photometry
The first part of this paper is devoted to a new CCD investigation of stars in the field of the LMC cluster NGC 1866. Two main frames have been analyzed, one covering the... -
Photometry of NGC 6171
B and V CCD photometry is presented for 1565 stars in the low-concentration globular cluster NGC6171=M107 -
BVI CCD photometry of NGC 7510
CCD observations in B, V and I passbands have been used to generate deep V, (B-V) and V, (V-I) colour-magnitude diagrams for the open cluster NGC 7510. The sample consists of... -
CCD photometry of omega Cen
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BV Photometry of NGC 6791
CCD BV photometry to V=20.5 of stars in the old open cluster NGC 6791 is presented. Comparison with the theoretical isochrones of VandenBerg gives a cluster age in the range of... -
NGC 6649 UBV photometry
A colour magnitude diagram to V=20 is given for 395 stars in the heavily reddened open cluster NGC 6649. The absorption-corrected distance modulus is 11.00+/-0.15mag... -
Abell 85 CCD observations
A CCD camera survey has been conducted of the X-ray emitting regions of a sample of clusters of galaxies. This sample includes at least one cluster from each of the classes in... -
M67 CCD photometry
Seven-color CCD photometry in the Vilnius photometric system of 279 stars down to V=15mag in the open cluster M 67 area is obtained. 13 standard stars in the cluster are... -
Vilnius photometry of NGC 1647 area
The area of the open cluster NGC 1647 in Taurus is investigated by CCD photometry in the Vilnius seven-color system. Magnitudes and color indices are determined for 433 stars... -
Vilnius photometry in NGC 2395
The area of the open cluster NGC 2395 in Gemini is investigated by CCD photometry in the Vilnius seven-color system. Magnitudes, color indices, photometric spectral types, color... -
M67 CCD Vilnius photometry
Seven color CCD photometry in the Vilnius system, supplemented by the Cousins I passband, has been obtained for 412 stars down to V=16mag in the M67 open cluster area. A special... -
BVIc photometry of Cepheids from ASAS-3 catalog
In 2008-2010, we obtained 6095 CCD frames in the BVIc photometric system for 49 classical Cepheids discovered in the ASAS-3 project. The observations were obtained on the 76-cm... -
UBV(RI)c light curves of BD+66 1663
We have obtained the first UBV(RI)C photoelectric light curves of the recently discovered eclipsing binary BD+66 1663 = GSC 4479 412 (P=7.04d, V=10.14). We have derived relative... -
VRI observations of radio source S5 0716+71
The results of VRI photometry of the gravitationally lensed system Q2237+0305 carried out on the 1.5-m telescope of Maidanak observatory in 2004-2005 are presented. The distance... -
BV(RI)c photometry of S5 0716+714
Photometric observations of the radio source S5 0716+71 were obtained in Johnson-Cousins BVRI filters from 1998 to 2001. with Zeiss-600 and Zeiss-1000 telescopes of SAO of the... -
R light curves of 5 blazars
We monitored five active galactic nuclei in the R optical band with a CCD mounted on the 1-m Zeiss-1000 telescope of the Special Astrophysical Observatory from April 2001 to... -
UBV Photometry in NGC 7419
UBV CCD photometry has been carried out on the heavily reddened (A_V_=6.7) Cepheus open cluster NGC 7419. An age of 14+/-2 Myr and a distance of 2.3kpc have been derived using... -
CCD photometry of 6 globular clusters
We present CCD photometry for six metal-rich Galactic globular clusters. The color-magnitude diagrams constructed from these data reach well below the horizontal branch (HB),... -
Binaries in NGC 3201
We present BV CCD and APM photometry, accurate astrometry and 1859 radial velocities for 1318 stars within ~36deg of the Galactic globular cluster NGC 3201. The field and...
