The NRAO VLA Sky Survey

Details The NRAO VLA Sky Survey The NRAO VLA Sky Survey

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996adil...jc...01c&link_type=abstract

NCSA Astronomy Digital Image Library

Astronomy and Astrophysics

Astronomy

Scientific paper

Observations for the 1.4 GHz NRAO VLA Sky Survey (NVSS) began in 1993 September and should cover the sky north of -40 deg declination (82% of the celestial sphere) before the end of 1996. The principal data products will be: (1) A set of 2326 continuum map "cubes," each covering 4 deg X 4 deg with three planes containing Stokes I, Q, and U images. These maps were made with a relatively large restoring beam (45 arcsec FWHM) to yield the high surface-brightness sensitivity needed for completeness and photometric accuracy. Their rms brightness fluctuations are about 0.45 mJy/beam = 0.14 K (Stokes I) and 0.29 mJy/beam = 0.09 K (Stokes Q and U). The rms uncertainties in right ascension and declination vary from 0.3 arcsec for strong (S > 30 mJy) point sources to 5 arcsec for the faintest (S = 2.5 mJy) detectable sources. (2) Lists of discrete sources. (3) Processed (u,v) data sets. Every large map was constructed from more than 100 smaller "snapshot" maps. All of the edited and calibrated single-source (u,v) data sets used to make the snapshot maps contributing to each large map have been combined into a single multisource (u,v) file for users who want to investigate the data underlying the large maps. The NVSS is being made as a service to the astronomical community, and the principal data products are being released into a directory accessible by anonymous FTP (nvss.cv.nrao.edu) as soon as they are produced and verified. To ensure equal access for everyone, the NVSS team members have agreed to use only these electronically released results for their own research. Users should read the postscript file "paper.ps" containing a detailed description of the NVSS. Unprocessed data are available on request. If you have any questions, comments, or special requests, please contact Jim Condon by email at Internet address "jcondon@nrao.edu" or by telephone at (804) 296-0322.

Affiliated with

Also associated with

No associations

Rating

The NRAO VLA Sky Survey 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 NRAO VLA Sky Survey, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The NRAO VLA Sky Survey will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1642985