A Search for Closely Spaced Gravitational Lenses
Abstract
A new image stabilizing camera was used to search for closely spaced images of a sample of 25 intrinsically luminous quasars with z > 1.6 and m < 19. Observations of seven similarly selected quasars with the regular CCD camera in good seeing conditions are also reported. Of the 32 quasars, seven are gravitational lens candidates. Two of these have subarcsecond separations. Additional information on all these candidates is required.
- Publication:
-
The Astronomical Journal
- Pub Date:
- October 1989
- DOI:
- 10.1086/115206
- Bibcode:
- 1989AJ.....98.1188C
- Keywords:
-
- Astronomical Photography;
- Gravitational Lenses;
- Quasars;
- Astronomical Catalogs;
- Cameras;
- Charge Coupled Devices;
- Red Shift;
- Astrophysics;
- QUASARS;
- GRAVITATION