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29 March 2024
 
  » arxiv » astro-ph/0401217

 Article overview


Northern Sky Variability Survey (NSVS): Public data release
P. R. Wozniak ; W. T. Vestrand ; C. W. Akerlof ; R. Balsano ; J. Bloch ; D. Casperson ; S. Fletcher ; G. Gisler ; R. Kehoe ; K. Kinemuchi ; B. C. Lee ; S. Marshall ; K. E. McGowan ; T. A. McKay ; E. S. Rykoff ; D. A. Smith ; J. Szymanski ; J. Wren ;
Date 12 Dec 2003
Subject astro-ph
Affiliation2, 3), K. Kinemuchi , B. C. Lee , S. Marshall , K. E. McGowan , T. A. McKay , E. S. Rykoff , D. A. Smith , J. Szymanski , J. Wren , ( Los Alamos National Laboratory, University of Michigan, Michigan State University, Lawrence Berkeley National Labor
AbstractThe Northern Sky Variability Survey (NSVS) is a temporal record of the sky over the optical magnitude range from 8 to 15.5. It was conducted in the course of the first generation Robotic Optical Transient Search Experiment (ROTSE-I) using a robotic system of four co-mounted unfiltered telephoto lenses equipped with CCD cameras. The survey was conducted from Los Alamos, NM, and primarily covers the entire northern sky. Some data in southern fields between declinations 0 and -38 deg is also available, although with fewer epochs and noticeably lesser quality. The NSVS contains light curves for approximately 14 million objects. With a one year baseline and typically 100-500 measurements per object, the NSVS is the most extensive record of stellar variability across the bright sky available today. In a median field, bright unsaturated stars attain a point to point photometric scatter of ~0.02 mag and position errors within 2 arcsec. At Galactic latitudes |b| < 20 deg the data quality is limited by severe blending due to ~14 arcsec pixel size. We present basic characteristics of the data set and describe data collection, analysis, and distribution. All NSVS photometric measurements are available for on-line public access from the Sky Database for Objects in Time-Domain (SkyDOT; http://skydot.lanl.gov) at LANL. Copies of the full survey photometry may also be requested on tape.
Source arXiv, astro-ph/0401217
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