Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...387...56b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 387, March 1, 1992, p. 56-68. Research supported by Space Telescope Science
Astronomy and Astrophysics
Astronomy
61
Gravitational Lenses, Hubble Space Telescope, Quasars, Sky Surveys (Astronomy), Luminosity, Point Spread Functions, Very Large Array (Vla)
Scientific paper
The first results from the HST Non-Proprietary Snapshot Survey are presented in order to investigate new examples of multiply imaged quasars that are the result of gravitational lensing. None of the approximately 30 quasars observed at high spatial resolution show evidence of multiple imaging by gravitational lensing. These results are compared with lower resolution ground-based surveys and current theoretical predictions. Several engineering problems in the observatory's performance are addressed. It particular, the large telescope pointing errors and drift rates are found to be primarily the result of the lack of correction for stellar aberration when pointing and tracking are performed solely with gyroscopes. The implications for the possibly low intrinsic gyro drift rate on future observations are discussed.
Bahcall John N.
Bahcall Neta A.
Doxsey Rodger
Lahav Ofer
Maoz Dan
No associations
LandOfFree
The snapshot survey - A search for gravitationally lensed quasars with the Hubble Space Telescope does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The snapshot survey - A search for gravitationally lensed quasars with the Hubble Space Telescope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The snapshot survey - A search for gravitationally lensed quasars with the Hubble Space Telescope will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1215059