J/PASP/120/1128ivo://CDS.VizieR/J/PASP/120/1128doi:10.26093/cds/vizier.61201128CDSOfek E.O.2025-09-09T14:13:21Z2009-01-01T21:09:21ZCDS support team

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

cds-question@unistra.frinfrared-sourcesinfrared-photometryvisible-astronomysloan-photometryPhotometric calibration at an accuracy of ~5% in an arbitrary celestial location is frequently needed. However, existing all-sky astronomical catalogue do not reach this accuracy, and time consuming photometric calibration procedures are required. I fitted the Hipparcos B_T_, and V_T_ magnitudes, along with the 2MASS J, H, and K magnitudes of Tycho-2 catalog-stars with stellar spectral templates. From the best fit spectral template derived for each star, I calculated its synthetic SDSS griz magnitudes, and constructed an all-sky catalog of griz magnitudes of bright stars (V<12). Testing this method on SDSS photometric telescope observations, I find that the photometric accuracy, for a single star, is usually about 0.12, 0.12, 0.10 and 0.08 mag (1sigma), for the g, r, i, and z-bands, respectively. However, by using ~10 such stars, the typical errors per calibrated field (systematic + statistical) can be reduced to about 0.04, 0.03, 0.02, and 0.02 mag, in the g, r, i, and z-bands, respectively. Therefore, in cases for which several calibration stars can be observed in the field of view of an instrument, it is possible to photometrically calibrate the image.2008PASP..120.1128Ohttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/PASP/120/1128CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/259 : The Tycho-2 Catalogue (Hog+ 2000)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/PASP/110/863 : A Stellar Spectral Flux Library: 1150 - 25000 A (Pickles 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/PASP/120/1128https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/PASP/120/1128http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/PASP/120/1128https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/PASP/120/1128https://vizier.iucaa.in/viz-bin/votable?-source=J/PASP/120/1128http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/PASP/120/1128GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/PASP/120/1128/catalog (Catalog of griz magnitudes for Tycho-2 stars with B_T_<13mag and V_T_<12mag)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/PASP/120/1128/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/PASP/120/1128/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/PASP/120/1128/catalog?GETtext/xml+votable180.050000true199.2369381-89.87757970.0055555555555555560/4-5 7-11 1/0 4 8 12 24 26-27 2/5-6 8-10 20-22 24-26 36-38 40-42 52-54 56-58 100-101 103 3/17-19 28 44 48 53-55 57-60 92 108 112 117-119 121-124 156 172 176 181-183 185-188 220 236 240 245-247 249-252 408-409 411 4/64-66 116 120 127 180 184 191 196 200 207 211 227 244 248 372 376 383 436 440 447 452 456 463 467 483 500 504 628 632 639 692 696 703 708 712 719 723 739 756 760 884 888 895 948 952 959 964 968 975 979 995 1012 1016 1640-1642 5/268 270-271 468 472 484 488 501-503 505-507 724 728 740 744 757-759 761-763 788 792 804 808 821-823 825-827 837-839 841-843 901-903 905-907 980-982 984-986 996-998 1000-1002 1492 1496 1508 1512 1525-1527 1529-1531 1748 1752 1764 1768 1781-1783 1785-1787 1812 1816 1828 1832 1845-1847 1849-1851 1861-1863 1865-1867 1925-1927 1929-1931 2004-2006 2008-2010 2020-2022 2024-2026 2516 2520 2532 2536 2549-2551 2553-2555 2772 2776 2788 2792 2805-2807 2809-2811 2836 2840 2852 2856 2869-2871 2873-2875 2885-2887 2889-2891 2949-2951 2953-2955 3028-3030 3032-3034 3044-3046 3048-3050 3540 3544 3556 3560 3573-3575 3577-3579 3796 3800 3812 3816 3829-3831 3833-3835 3860 3864 3876 3880 3893-3895 3897-3899 3909-3911 3913-3915 3973-3975 3977-3979 4052-4054 4056-4058 4068-4070 4072-4074 6572-6574 6/1077-1079 1876-1878 1880-1882 1892-1894 1896-1898 1917-1919 1940-1942 1944-1946 1956-1957 1960-1962 1981-1983 1997-1999 2001-2003 2017-2019 2900-2902 2904-2906 2916-2918 2920-2922 2941-2943 2964-2966 2968-2970 2980-2982 2984-2986 3005-3007 3021-3023 3025-3027 3041-3043 3156 3158 3160 3172 3176-3178 3197-3199 3220-3222 3224-3225 3236-3238 3240-3241 3261-3263 3277-3279 3281-3283 3297-3299 3341-3343 3345-3347 3361-3363 3597-3599 3601-3603 3617-3619 3932-3934 3948-3950 3952-3954 3996-3998 4012-4014 4016-4018 4032-4034 5972-5974 5976-5977 5988 5992-5993 6013-6015 6036-6038 6040-6041 6052-6054 6056-6057 6077-6079 6093-6095 6097-6099 6113-6115 6996-6998 7000-7002 7012 7016 7018 7037-7039 7060-7062 7064-7066 7076-7078 7080-7082 7101-7103 7117-7119 7121-7123 7137-7139 7252-7253 7256-7258 7268-7270 7272-7273 7293-7295 7316-7317 7320-7322 7332-7334 7336-7338 7357-7359 7373-7375 7377-7379 7393-7395 7437-7439 7441-7443 7457-7459 7693-7695 7697-7699 7713-7715 8028-8030 8044-8046 8048-8050 8092-8094 8108-8110 8112-8114 8128-8130 10068-10070 10072-10074 10084-10086 10088-10090 10109-10111 10132-10133 10136 10138 10148 10150 10152 10154 10173-10175 10189-10191 10193-10195 10209-10211 11092 11094 11096-11098 11108 11112-11114 11133-11135 11156 11158 11160-11161 11172-11174 11176 11178 11197-11199 11213-11215 11217-11219 11233-11235 11348 11352-11354 11364 11366 11368-11370 11389-11391 11412-11414 11416-11417 11428-11429 11432-11434 11453-11455 11469-11471 11473-11475 11489-11491 11533-11535 11537-11539 11553-11555 11789-11791 11793-11795 11809 11811 12124-12126 12140-12142 12144-12146 12188-12190 12204-12206 12208-12210 12224-12226 14164-14166 14168-14170 14180-14182 14184-14186 14205-14207 14228-14230 14232-14234 14244-14246 14248-14250 14269-14271 14285-14287 14289-14291 14305-14307 15188-15190 15192-15194 15204-15205 15208-15210 15229-15231 15252-15253 15256-15258 15268-15270 15272-15273 15293-15295 15309-15311 15313-15315 15329-15331 15444-15446 15448-15450 15460-15462 15464-15466 15485-15487 15508-15510 15512-15514 15524-15526 15528-15530 15549-15551 15565-15567 15569-15571 15585-15587 15629-15631 15633-15635 15649-15651 15885-15887 15889-15891 15905-15907 16220-16222 16236-16238 16240-16242 16284-16286 16300-16302 16304-16306 16320-16322 26300-263027.952274030004205e-20 5.101838343667421e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/PASP/120/1128?format=asciiOpticalInfrareddefaultJ/PASP/120/1128/catalogCatalog of griz magnitudes for Tycho-2 stars with B_T_<13mag and V_T_<12magrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintok[0,1] Flag indicating a good standard (1)meta.codeintBTmagBT magnitudemagphot.mag;em.opt.Bfloate_BTmagBT magnitude errormagstat.error;phot.mag;em.opt.BfloatVTmagVT magnitudemagphot.mag;em.opt.Vfloate_VTmagVT magnitude errormagstat.error;phot.mag;em.opt.VfloatJmag? J magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? J magnitude error (2)magstat.error;phot.mag;em.IR.JfloatnullableHmag? H magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? H magnitude error (2)magstat.error;phot.mag;em.IR.HfloatnullableKmag? K magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? K magnitude error (2)magstat.error;phot.mag;em.IR.KfloatnullableT2MTycho (Cat. I/259) and 2MASS (Cat. II/246) datameta.ref.urlcharrmsTemBest rms-fit spectral template (3)meta.id;stat.fitcharminRMS[0/11]?=- the rms for the best rms-fit templatemagstat.errorfloatnullablegmag?=- rms-fit g-band magnitude (0.06 magnitude already added)magphot.mag;em.opt.Bfloatnullablermag?=- rms-fit r-band magnitude (0.04 magnitude already added)magphot.mag;em.opt.Rfloatnullableimag?=- rms-fit i-band magnitude (0.03 magnitude already added)magphot.mag;em.opt.Ifloatnullablezmag?=- rms-fit z-band magnitude (0.03 magnitude already added)magphot.mag;em.opt.IfloatnullablechiTemBest {chi}^2^-fit spectral template (3)meta.id;stat.fitcharminChi?=- the {chi}^2^ for the best {chi}^2^-fit template (dof=4)stat.fit.chi2doublenullable2gmag? {chi}^2^-fit g-band magnitude (0.07 magnitude already added)magstat.fit.chi2floatnullable2rmag? {chi}^2^-fit r-band magnitude (0.04 magnitude already added)magstat.fit.chi2floatnullable2imag? {chi}^2^-fit i-band magnitude (0.04 magnitude already added)magstat.fit.chi2floatnullable2zmag? {chi}^2^-fit z-band magnitude (0.03 magnitude already added)magstat.fit.chi2floatnullableRAJ2000Right Ascension J2000.0degpos.eq.ra;meta.mainindexedDEJ2000Declination J2000.0degpos.eq.dec;meta.mainindexed