/ftp/cats/7/149



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VII/149  Positions of high-redshift luminous quasars   (Schneider+ 1992)
The following files can be converted to FITS (extension .fit .fgz or .fiZ)
	catalog.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=VII/149
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Beginning of ReadMe : VII/149 Positions of high-redshift luminous quasars (Schneider+ 1992) ================================================================================ Accurate positions of 528 High-Redshift, Luminous Quasars from the HST Snap-Shot Survey Schneider D.P., Bahcall J.N., Saxe D.H., Bahcall N.A., Doxsey R., Golombek D., Krist J., McMaster M., Meakes M., Lahav O. <Publ. Astron. Soc. Pac. 104, 678 (1992)> ================================================================================ ADC_Keywords: Positional data ; QSOs ; Redshifts ; Surveys Keywords: quasars: positions - quasars: finding charts - quasars Description: The non-proprietary HST Snapshot Survey produced Planetary Camera images of high-redshift, luminous quasars. The aim of the program is to determine the frequency of multiple imaged QSOs down to angular scales of 0.15". Detailed descriptions of the program are given in Bachall et al. (1992ApJ...387...56B) and Maoz et al. (1992ApJ...394...51M). The sample was taken from the 3rd and 4th editions of the catalog of Veron-Cetty and Veron (1987ESOSR...5....1V, 1989ESOSR...7....1V). The target positions taken from these catalogs were fed to GASP, the STSci Guide Star Astrometric Support Program, to generate revised positions from regions extracted from the STSci's digitized sky survey. The printed version of the catalog does not contain the Veron 1950 coordinates nor the difference between these and the GASP derived 1950 coordinates that are contained in this version. Abstract: We present finding charts and J2000 positions accurate to  1" for the 528 high-redshift (z>1), luminous (M_v_<-25.5) quasars investigated in the Hubble Space Telescope Snapshot Survey. The information was produced with the Space Telescope Science Institute's Astrometric Support Program.