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| Generic/Johnson_UBVRIJHKL.U | 3531.1 | 3570.6 | 3010 | 4100 | 657.0 | 1564.2 | | | Johnson UBVRIJHKL system, U filter | | Generic/Johnson_UBVRIJHKL.B | 4427.1 | 4378.4 | 3617 | 5553 | 1011.7 | 4005.0 | | | Johnson UBVRIJHKL system, B filter | | Generic/Johnson_UBVRIJHKL.V | 5537.2 | 5466.1 | 4698 | 7204 | 889.7 | 3562.5 | | | Johnson UBVRIJHKL system, V filter | | Generic/Johnson_UBVRIJHKL.R | 6939.6 | 6695.6 | 5233 | 9400 | 2070.0 | 2814.9 | | | Johnson UBVRIJHKL system, R filter | | Generic/Johnson_UBVRIJHKL.I | 8780.7 | 8565.1 | 7000 | 11800 | 2316.0 | 2282.8 | | | Johnson UBVRIJHKL system, I filter | | Generic/Johnson_UBVRIJHKL.J | 12487.8 | 12100.9 | 9693 | 15507 | 3193.5 | 1571.5 | | | Johnson UBVRIJHKL system, J filter | | Generic/Johnson_UBVRIJHKL.K | 21951.2 | 21420.3 | 18050 | 25938 | 5784.8 | 653.4 | | | Johnson UBVRIJHKL system, K filter | | Generic/Johnson_UBVRIJHKL.LII | 34370.7 | 33758.8 | 29071 | 41500 | 7010.1 | 295.9 | | | Johnson UBVRIJHKL system, LII filter | | Generic/Johnson_UBVRIJHKL.LI | 35395.4 | 34450.2 | 29071 | 42750 | 8800.0 | 281.4 | | | Johnson UBVRIJHKL system, LI filter | | Generic/Johnson_UBVRIJHKL.N | 103240.7 | 92055.9 | 70196 | 136000 | 43744.4 | 38.6 | | | Johnson UBVRIJHKL system, N filter |
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© SVO, 5927 filters available, Last update: 2020-05-31 | 
 ≡ filter transmission<p><u>Property info:</u><ul><li><b>Unit</b>:Angstrom<li><b>UCD</b>:em.wl<li><b>Utype</b>: <i>photdm:PhotometryFilter.SpectralAxis.Coverage.Location.Value</i></ul></td></table>',WIDTH,400)){kind=link}
 ≡ filter transmission<br> Vg(λ) ≡ Vega spectrum<p><u>Property info:</u><ul><li><b>Unit</b>:Angstrom<li><b>UCD</b>:em.wl.effective</ul></td></table>',WIDTH,400)){kind=link}
 ≡ filter transmission<p>Equivalent to the horizontal size of a rectangle with height equal to maximum transmission and with the same area that the one covered by the filter transmission curve.<p><u>Property info:</u><ul><li><b>Unit</b>:Angstrom<li><b>UCD</b>:instr.bandwidth<li><b>Utype</b>: <i>photdm:PhotometryFilter.SpectralAxis.Coverage.Bounds.Extent</i></ul></td></table>',WIDTH,400)){kind=link}
</b><br><table cellpadding=20><td class=helptd>Zero Point in Vega System.<p>Calculated by the service as:<p><img src=images/latex/zp.png> <p>where:<p> T(λ) ≡ filter transmission<br> Vg(λ) ≡ Vega spectrum<p>F<sub>0,ν</sub>(Jy) = (2.9979246)<sup>-1</sup> 10<sup>5</sup> * λ<sub>eff</sub><sup>2</sup> * F<sub>0,λ</sub>(erg/cm<sup>2</sup>/s/A)<p>In the case that filter owner specifies its own values, they will be the ones provided by the service when queried through the VO.<p><u>Property info:</u><ul><li><b>Unit</b>:Jy<li><b>UCD</b>:phot.flux.density<li><b>Utype</b>: <i>photdm:PhotCal.ZeroPoint.Flux.value</i></ul></td></table>',WIDTH,400)){kind=link}