| 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.LI | Filter Description | Filter ID (?) : | Generic/Johnson_UBVRIJHKL.LI |
| Description (?) : | Johnson UBVRIJHKL system, LI filter |
| Phot.System (?) : | Johnson_UBVRIJHKL |
| Detector Type (?) : | Energy counter |
| Band Name (?) : | U |
| Obs. Facility (?) : | ------ |
| Instrument (?) : | ------ |
| Comments (?) : | ------ |
| | Mathematical properties | Property | Calculated | Specified | Unit | | λmean (?) : |
35395.39 | ------- | (Angstrom) |
| λcen (?) : |
35633.33 | ------- | (Angstrom) |
| λeff (?) : |
34450.16 | ------- | (Angstrom) |
| λpeak (?) : |
33000.00 | ------- | (Angstrom) |
| λpivot (?) : |
35023.81 | ------- | (Angstrom) |
| λphot (?) : |
34686.43 | ------- | (Angstrom) |
| λmin (?) : |
29071.43 | ------- | (Angstrom) |
| λmax (?) : |
42750.00 | ------- | (Angstrom) |
| Weff (?) : |
8799.98 | ------- | (Angstrom) |
| FWHM (?) : |
9933.33 | ------- | (Angstrom) |
| Af/AV (?) : |
0.07 | ------- | () |
| Fsun (?) : |
------- | ------- | (erg/cm2/s/A) |
| Transmission
Data file: ascii, VOTable Reference for filter response:
Johnson et al. 1968 Transmission components: Filter | | Calibration properties
Vega System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
7.108e-12 | (erg/cm2/s/A) |
| |
------- |
281.38 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Generic/Johnson_UBVRIJHKL.LI/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
9.172e-11 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Generic/Johnson_UBVRIJHKL.LI/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
143743.41 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Generic/Johnson_UBVRIJHKL.LI/ST |
| |
|
Filter added: 2017-07-27 02:24:09
Last update: 2020-03-23 12:58:04 |
| Generic/Johnson_UBVRIJHKL.N | 103240.7 | 92055.9 | 70196 | 136000 | 43744.4 | 38.6 | | | Johnson UBVRIJHKL system, N filter |
 ≡ 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}
 ≡ filter transmission<p>f(λ) ≡ flux of the spectrum<p><u>Property info:</u><ul><li><b>Utype</b>: <i>photdm:PhotometricSystem.detectorType</i></ul></td></table>',WIDTH,400)){kind=link}
 ≡ filter transmission<p><img src=showgraph.php?what=lmean&val=35395.389093056&id=Generic/Johnson_UBVRIJHKL.LI><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>',STICKY,true,CLOSEBTN,true,WIDTH,400)){kind=link}
 ≡ filter transmission<br> Vg(λ) ≡ Vega spectrum<p><img src=showgraph.php?what=leff&val=34450.156249268&id=Generic/Johnson_UBVRIJHKL.LI><p><u>Property info:</u><ul><li><b>Unit</b>:Angstrom<li><b>UCD</b>:em.wl.effective</ul></td></table>',STICKY,true,CLOSEBTN,true,WIDTH,400)){kind=link}
 ≡ filter transmission<p><img src=showgraph.php?what=lpiv&val=35023.811768269&id=Generic/Johnson_UBVRIJHKL.LI><p><u>Property info:</u><ul><li><b>Unit</b>:Angstrom<li><b>UCD</b>:em.wl</ul></td></table>',STICKY,true,CLOSEBTN,true,WIDTH,400)){kind=link}
 ≡ filter transmission<br> Vg(λ) ≡ Vega spectrum<p><img src=showgraph.php?what=lphot&val=34686.433047443&id=Generic/Johnson_UBVRIJHKL.LI><p><u>Property info:</u><ul><li><b>Unit</b>:Angstrom<li><b>UCD</b>:em.wl</ul></td></table>',STICKY,true,CLOSEBTN,true,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><img src=showgraph.php?what=weff&val=8799.98,35633.333333333,1&id=Generic/Johnson_UBVRIJHKL.LI><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>',STICKY,true,CLOSEBTN,true,WIDTH,400)){kind=link}
![(?)](javascript:Tip('<b>A<sub>f</sub>/A<sub>V</sub></b><br><table cellpadding=20><td class=helptd>Ratio between extintion at λ<sub>eff</sub> and visual extintion. <p>Calculated by the service using the extinction law by <a href="http://adsabs.harvard.edu/abs/1999PASP..111...63F" target="_blank">Fitzpatrick (1999)</a> improved by <a href="http://adsabs.harvard.edu/abs/2005ApJ...619..931I" target="_blank">Indebetouw et al (2005)</a> in the infrared. <p><img src=images/extinctionlaw.png><p>You can download the corresponding <a href=\"getextlaw.php\" target=\"_blank\">data file</a> for the opacity k<sub>λ</sub>. The extinction at each wavelength is calculated as: A<sub>λ</sub> = A<sub>V</sub> * k<sub>λ</sub>/k<sub>V</sub>, where k<sub>λ</sub> is the opacity for a given λ and k<sub>V</sub>=211.4<p><p><u>Property info:</u><ul></ul></td></table>',STICKY,true,CLOSEBTN,true,WIDTH,400)){kind=link}
 ≡ filter transmission<br> Sun(λ) ≡ Sun spectrum<p>Sun spectrum from calspec database: sun_reference_stis_002 with with sun_mod_001 for larger wavelengths.<p><img src=images/sunspec.png><p><p><u>Property info:</u><ul><li><b>Unit</b>:erg/cm2/s/A<li><b>UCD</b>:phot.flux.density</ul></td></table>',STICKY,true,CLOSEBTN,true,WIDTH,400)){kind=link}
 ≡ 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>VO PhotDM Utypes</u>: <br><i>PhotCal.MagnitudeSystem.type</i> -> VEGAmag <br><i>PhotCal.ZeroPoint.Flux.value</i> -> F<sub>0</sub><p><u>Property info:</u><ul><li><b>UCD</b>:phot.flux.density<li><b>Utype</b>: <i>photdm:PhotCal.ZeroPoint.Flux.value</i></ul></td></table>',STICKY,true,CLOSEBTN,true,WIDTH,400)){kind=link}