Optical Observations of the Gravitational Lens SBS1 520+530 at the Ma[i]danak Observatory
Abstract
Observations of the gravitationally lensed quasar SBS 1520+530 obtained in 2000 2001 on the 1.5-m telescope of the Ma danak Observatory (Uzbekistan) are presented. The photometric algorithms used to observe the components of SBS 1520+530 are discussed. The images have a resolution of 0.5″ 0.6″, enabling us to detect the lensing galaxy in the R and I bands and to measure its luminosity and coordinates. The results of photometric observations of components A and B of SBS 1520+530 are presented; the light curves show variability on various time scales from a few weeks to a year. A gravitational-lens model for SBS 1520+530 is constructed utilizing all currently available data.
- Publication:
-
Astronomy Reports
- Pub Date:
- September 2003
- DOI:
- 10.1134/1.1611212
- Bibcode:
- 2003ARep...47..717Z