II/287ivo://CDS.VizieR/II/287CDSWozniak 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.2024-01-09T08:40:18Z2021-11-23T12:29:47ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frvariable-starssurveysThe 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 0{deg} and -38{deg} 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|<20{deg}, 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.2004AJ....127.2436Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/II/287CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=II/287https://vizier.iucaa.in/viz-bin/VizieR-2?-source=II/287http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=II/287https://vizier.cds.unistra.fr/viz-bin/votable?-source=II/287https://vizier.iucaa.in/viz-bin/votable?-source=II/287http://vizieridia.saao.ac.za/viz-bin/votable?-source=II/287GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table II/287/skydot (Skydot catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/II/287/skydot?https://vizier.iucaa.in/viz-bin/conesearch/II/287/skydot?http://vizieridia.saao.ac.za/viz-bin/conesearch/II/287/skydot?GETtext/xml+votable180.050000true233.0648679.375780.005555555555555556Cone search capability for table II/287/fields (Fields)https://vizier.cds.unistra.fr/viz-bin/conesearch/II/287/fields?https://vizier.iucaa.in/viz-bin/conesearch/II/287/fields?http://vizieridia.saao.ac.za/viz-bin/conesearch/II/287/fields?GETtext/xml+votable180.050000true225.084.00.0055555555555555560/0-3 1/17-19 21-23 25-27 29-31 2/65-67 81-83 97-99 113-115 141-143 157-159 173-175 189-191 3/257-259 321-323 385-387 449-451 541-543 557-559 561-563 605-607 621-623 625-627 669-671 685-687 689-691 733-735 749-751 753-755 4/1025-1027 1281-1283 1537-1539 1795 2141-2143 2157-2159 2161-2163 2205-2207 2221-2223 2225-2227 2241-2243 2397-2399 2413-2415 2417-2419 2461-2463 2477-2479 2481-2483 2497-2499 2654-2655 2669-2671 2673-2675 2717-2719 2733-2735 2737-2739 2753-2755 2909-2911 2925-2927 2929-2931 2973-2975 2989 2991 2993-2995 3009-3011 5/4099 5123 6147 7173-7175 7177-7179 8543 8559 8563 8607 8623 8627 8643 8799 8815 8819 8863 8879 8883 8899 8961 8963 9567 9583 9587 9631 9647 9651 9667 9823 9839 9843 9887 9903 9907 9923 9987 10607 10613-10615 10655 10671 10675 10691 10847 10863 10867 10911 10927 10931 10947 11011 11615 11631 11635 11679 11695 11699 11715 11871 11887 11891 11935 11961-11963 11971 12035 6/16389-16391 16393-16395 20485-20487 20489-20491 24581-24583 24585-24587 28685-28687 28689-28691 28705-28707 34165-34167 34169-34171 34229-34231 34233-34235 34245-34247 34249-34251 34417 34421-34423 34425-34427 34478 34485-34487 34489-34491 34501-34503 34505-34507 34565-34567 34569-34571 35189-35191 35193-35195 35253-35255 35257-35259 35269-35271 35273-35275 35445-35447 35449-35451 35509-35511 35513-35515 35525-35527 35529-35531 35589-35591 35593-35595 35849-35851 38237 38261-38263 38265-38267 38325-38327 38329-38331 38341-38343 38345-38347 38517-38519 38521-38523 38581-38583 38585-38587 38597-38599 38601-38603 38661-38663 38665-38667 39282 39285-39287 39289-39291 39349-39351 39353-39355 39365-39367 39369-39371 39541-39543 39545-39547 39601 39603 39605-39607 39609-39611 39621-39623 39625-39627 39681 39683 39685-39687 39689-39691 39941-39943 39945-39947 42335 42350 42365-42367 42421-42423 42425-42427 42433 42445-42447 42449-42451 42613-42615 42617-42619 42655 42677-42679 42681-42683 42693-42695 42697-42699 42757-42759 42761-42763 43381-43383 43385-43387 43445-43447 43449-43451 43461-43463 43465-43467 43637-43639 43641-43643 43701-43703 43705-43707 43717-43719 43721-43723 43781-43783 43785-43787 44037-44039 44041-44043 46453-46455 46457-46459 46517-46519 46521-46523 46533-46535 46537-46539 46709-46711 46713-46715 46773-46775 46777-46779 46789-46791 46793-46795 46853-46855 46857-46859 47477-47479 47481-47483 47542-47543 47545 47547 47557-47559 47561-47563 47733-47735 47737-47739 47795-47796 47805-47807 47821-47823 47841-47843 47877-47879 47881-47883 48133-48135 48137-48139https://cdsarc.cds.unistra.fr/viz-bin/moc/II/287?format=asciidefaultII/287/skydotSkydot catalogemagMedian error bar of "good" pointsmagstat.error;phot.magfloatNobsNumber of "good" pointsmeta.numberintN1Number of all points without RADECFLIP Cagmeta.numberintNdetNumber of all object detectionsmeta.numberintflag[0,3] Object flagsmeta.code.errorintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Median right ascension of centroid (J2000)degpos.eq.ra;meta.mainindexede_RAJ2000Mean error on RAdeg1e-05degstat.error;pos.eq.raintDEJ2000Median right ascension of centroid (J2000)degpos.eq.dec;meta.mainindexede_DEJ2000Mean error on DEdeg1e-05degstat.error;pos.eq.decintmagUnfiltered optical magnitude 450-1000nm, effective wavelength or R band, median value from "good" pointsmagphot.mag;em.optfloate_magMean error on mag around medianmagstat.error;phot.magfloatII/287/fieldsFieldsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField name (NNNa) (001a ---> 0161d)obs.fieldcharRAJ2000Right ascension of field center (J2000.0) in decimal degreesdegpos.eq.ra;meta.mainDEJ2000Declination of field center (J2000.0) in decimal degreesdegpos.eq.dec;meta.mainGLONGalactic longitude of field centerdegpos.galactic.lonGLATGalactic latitude of field centerdegpos.galactic.latfloatNfrNumber of framesmeta.numberintNobjNumber of catalog objectsmeta.numberintsig-phLimiting photometric scattermagstat.stdevfloatII/287/framesFramesNpixNumber of valid pixels in photometric correction mapmeta.numberfloatFlagFrame flagsmeta.code.errorintJDJulian date (JD-2400000)dtime.epochdoubleindexedFieldField ID ou Image file nameobs.fieldcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[1/644] Frame IDmeta.id;meta.mainintCam[1abcd ] Camera ID (ABCD)meta.id;instrcharTimeTime of observation in UT secondsstime.epochdoubleDateUT date of observationstime.epoch;obsnullableExpTimeExposure timestime.duration;obs.exposurefloatbkgSky backgroundctinstr.backgroundfloate_bkgStandard deviation of sky backgroundctstat.errorfloate_posStandard deviation around the fit to positions of Tycho starspixstat.errorfloatzpoffsetMedian magnitude offset with respect to Tycho starsmagphot.mag;arith.zpfloate_zpoffsetStandard deviation of magnitude offsetsmagstat.errorfloatmlimLimiting magnitudemagphot.magfloatmsatSaturation magnitudemagphot.magfloatNobjNumber of objects detected by SExtractormeta.numberintNobj2Number of objects actually measuredmeta.numberintNmatchNumber of Tycho stars used in magnitude matchingmeta.numberintdmoonAngular distance between frame center and the Moondegpos.angDistancefloatelevElevation of frame center with respect to horizondeginstr.offsetfloatazimuthAzimuth of frame centerdegpos.posAngfloatmountRARA J2000.0 position of telescope mountdegpos.eq.rafloatmountDEDE J2000.0 position of telescope mountdegpos.eq.decfloatoRA{Delta}RAcosDE offset between frame center and mount positiondegpos.eq.ra;arith.difffloatoDE{Delta}DE offset between frame center and mount positiondegpos.eq.dec;arith.difffloatmaprmsStandard deviation of the photometric correction mapmagstat.stdev;phot.mag;arith.diffintII/287/synonymSynonymrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObj1First object IDmeta.id;meta.mainintObj2Second object IDmeta.idintSepSpherial distance (<1pixel)degpos.angDistancedouble