/ftp/cats/ii/287



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II/287            Northern Sky Variability Survey (NSVS)        (Wozniak+, 2004)
The following files can be converted to FITS (extension .fit or fit.gz)
	skydot.dat fields.dat frames.dat id/* noid/* noid2/* synonym.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=II/287
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drwxr-xr-x 351 cats archive 8192 Mar 25 10:13 [Up] drwxr-xr-x 8 cats archive 4096 Jan 9 11:42 [TAR file] -rw-r--r-- 1 cats archive 515 Jan 9 11:40 .message -r--r--r-- 1 cats archive 10925 Nov 23 2021 ReadMe -rw-r--r-- 1 cats archive 1969 Jan 9 11:39 +footg5.gif -rw-r--r-- 1 cats archive 16131 Jan 9 11:39 +footg8.gif -r--r--r-- 1 cats archive 28980 Mar 5 2009 fields.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 10744535 Mar 5 2009 frames.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html] drwxr-xr-x 2 cats archive 24576 Nov 22 2021 id drwxr-xr-x 2 cats archive 28672 Nov 22 2021 noid -r--r--r-- 1 cats archive 417992078 Jun 21 2008 skydot.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 125108340 Mar 5 2009 synonym.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : II/287 Northern Sky Variability Survey (NSVS) (Wozniak+, 2004) ================================================================================ Northern Sky Variability Survey: public data release. Wozniak P.R., Vestrand W.T., Akerlof C.W., Balsano R., Bloch J., Casperson D., Fletcher S., Gisler G., Kehoe R., Kinemuchi K., Lee B.C., Marshall S., McGowan K.E., McKay T.A., Rykoff E.S., Smith D.A., Szymanski J., Wren J. <Astron. J., 127, 2436-2449 (2004)> =2004AJ....127.2436W ================================================================================ ADC_Keywords: Stars, variable ; Surveys Keywords: astronomical data bases: miscellaneous - catalogs - stars: general - stars: variables: other - surveys Abstract: The 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 comounted unfiltered telephoto lenses equipped with CCD cameras. The survey was conducted from Los Alamos, New Mexico, and primarily covers the entire northern sky. Some data in southern fields between declinations 0deg and -38deg are also available, although with fewer epochs and noticeably lesser quality. The NSVS contains light curves for approximately 14 million objects. With a 1-yr 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  0.02mag and position errors within 2. At Galactic latitudes |b|<20deg, the data quality is limited by severe blending due to the  14" 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) at Los Alamos National Laboratory. Copies of the full survey photometry may also be requested on tape. Acknowledging the usage of NSVS: We request that the researchers using NSVS in their published work include the following statement to acknowledge the source of data: This publication makes use of the data from the Northern Sky Variability Survey created jointly by the Los Alamos National Laboratory and University ofMichigan. The NSVS was funded by the Department of Energy, the National Aeronautics and Space Administration, and the National Science Foundation.