|
| UKIRT/WFCAM.Z_filter | 8813.42 | 8826.78 | 8809.35 | 8134.91 | 9460.85 | 909.41 | 2250.94 | 8.69e-10 | UKIRT | WFCAM | WFCAM Z filter (filter only) | | UKIRT/WFCAM.Z | 8817.00 | 8839.48 | 8817.00 | 8360.00 | 9290.00 | 930.00 | 2250.67 | 8.66e-10 | UKIRT | WFCAM | WFCAM Z filter (total transmission) | | UKIRT/WFCAM.Z | Filter Description | Filter ID (?) : | UKIRT/WFCAM.Z |
| Description (?) : | WFCAM Z filter (total transmission) |
| Phot.System (?) : | WFCAM |
| Detector Type (?) : | Photon counter |
| Band Name (?) : | ------ |
| Obs. Facility (?) : | UKIRT |
| Instrument (?) : | WFCAM |
| Comments (?) : | WFCAM Z filter used for UKIDSS survey.
Total transmission including correction for the wavelength shifts
induced by cooling to operating temperature (120K) the 10-degree
angle of incidence of the beam on the filter, quantum efficiency
and the effect of 1.0mm water vapour, 1.3 airmass. |
| | Mathematical properties | Property | Calculated | Specified | Unit | | λref (?) : |
8826.35 | 8817 | (Angstrom) |
| λmean (?) : |
8839.48 | ------- | (Angstrom) |
| λcen (?) : |
8829.99 | ------- | (Angstrom) |
| λeff (?) : |
8822.28 | 8817 | (Angstrom) |
| λpeak (?) : |
9150.00 | ------- | (Angstrom) |
| λpivot (?) : |
8826.35 | ------- | (Angstrom) |
| λphot (?) : |
8831.03 | ------- | (Angstrom) |
| λmin (?) : |
8185.00 | 8360 | (Angstrom) |
| λmax (?) : |
9410.00 | 9290 | (Angstrom) |
| Weff (?) : |
845.56 | 930 | (Angstrom) |
| FWHM (?) : |
917.02 | ------- | (Angstrom) |
| Af/AV (?) : |
0.521 | ------- | () |
| Fsun (?) : |
92.82 | ------- | (erg/cm2/s/A) |
| Transmission
Data file: ascii, VOTable Reference for filter response:
Hewett et al., 2006 Transmission components: Filter + Instrument + Atmosphereid:UKIRT/WFCAM.Z
You can download here the GaiaXPy base XML file for the full UKIRT/WFCAM filter set.
Please, take a look to GaiaXPy documentation for more information. - GaiaXPy base XML file. | | Calibration properties
Vega System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
8.66104e-10 | (erg/cm2/s/A) |
| |
------- |
2250.67 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
UKIRT/WFCAM.Z/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
1.39728e-9 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
UKIRT/WFCAM.Z/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
9435.56 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
UKIRT/WFCAM.Z/ST |
| |
Reference for calibration:
Lawrence et al 2007 |
Filter added: 2018-07-25 18:33:37
Last update: 2021-07-27 20:43:32 | | UKIRT/WFCAM.Y | 10305.00 | 10327.94 | 10305.00 | 9790.00 | 10810.00 | 1020.00 | 2034.41 | 5.73e-10 | UKIRT | WFCAM | WFCAM Y filter (total transmission) | | UKIRT/WFCAM.Y_filter | 10363.20 | 10376.84 | 10347.60 | 9653.36 | 11129.17 | 965.03 | 2018.00 | 5.63e-10 | UKIRT | WFCAM | WFCAM Y filter (filter only) | | UKIRT/WFCAM.J | 12483.00 | 12528.07 | 12483.00 | 11690.00 | 13280.00 | 1590.00 | 1534.75 | 2.94e-10 | UKIRT | WFCAM | WFCAM J filter (total transmission) | | UKIRT/WFCAM.J_filter | 12546.98 | 12573.88 | 12507.92 | 11489.94 | 13726.22 | 1472.84 | 1526.56 | 2.91e-10 | UKIRT | WFCAM | WFCAM J filter (filter only) | | UKIRT/WFCAM.H | 16313.00 | 16422.88 | 16313.00 | 14920.00 | 17840.00 | 2920.00 | 1022.87 | 1.15e-10 | UKIRT | WFCAM | WFCAM H filter (total transmission) | | UKIRT/WFCAM.H_filter | 16472.54 | 16542.25 | 16383.26 | 14580.97 | 18797.90 | 2821.39 | 1011.79 | 1.12e-10 | UKIRT | WFCAM | WFCAM H filter (filter only) | | UKIRT/WFCAM.H2_filter | 21415.95 | 21416.46 | 21414.65 | 21140.49 | 21703.09 | 210.51 | 661.19 | 4.32e-11 | UKIRT | WFCAM | WFCAM H2 filter (filter only) | | UKIRT/WFCAM.Brg_filter | 21832.07 | 21833.18 | 21832.90 | 21419.04 | 22281.97 | 306.74 | 630.16 | 3.96e-11 | UKIRT | WFCAM | WFCAM Brg filter (filter only) | | UKIRT/WFCAM.K | 22010.00 | 22131.99 | 22010.00 | 20290.00 | 23800.00 | 3510.00 | 632.56 | 3.9e-11 | UKIRT | WFCAM | WFCAM K filter (total transmission) | | UKIRT/WFCAM.K_filter | 22333.02 | 22402.40 | 22231.28 | 19863.48 | 24756.91 | 3175.86 | 618.57 | 3.72e-11 | UKIRT | WFCAM | WFCAM K filter (filter only) |
|
| 
 ≡ filter transmission<p><u>Property info:</u><ul><li><b>Unit</b>:Angstrom<li><b>UCD</b>:em.wl</ul></td></table>',WIDTH,400)){kind=link}
 ≡ filter transmission<br> Vg(λ) ≡ Vega spectrum.<p><u>More info:</u><p>Vega spectrum from calspec database.<ul><li><a href="https://ui.adsabs.harvard.edu/abs/2014PASP..126..711B/abstract" target="_blank">Bohlin, Gordon, & Tremblay (2014)</a>.<li><a href="https://www.stsci.edu/hst/instrumentation/reference-data-for-calibration-and-tools/astronomical-catalogs/calspec" target="_blank">STScI current calspec</a>.<li><a href="morefiles/vega.dat" target="_blank">Vega spectrum file</a> (units: Angstrom erg/cm2/s/A).</ul><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.bandwidth.extent.value</i></ul></td></table>',WIDTH,400)){kind=link}
 ≡ filter transmission (energy counter).<br> Vg(λ) ≡ Vega spectrum.<p><i>(T(λ) must be multiplied by λ for photon counting devices)</i><p>F<sub>0,ν</sub>(Jy) = (2.9979246)<sup>-1</sup> 10<sup>5</sup> * λ<sub>ref</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 (energy counter).<br> Vg(λ) ≡ Vega spectrum.<p><i>(T(λ) must be multiplied by λ for photon counting devices)</i><p><u>Property info:</u><ul><li><b>Unit</b>:erg/cm2/s/A<li><b>Utype</b>: <i>PhotCal.ZeroPoint</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>UCD</b>:meta.code<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=8839.4794134196&id=UKIRT/WFCAM.Z><p>Filter transmission is transformed to "<i>energy counter</i>" for these calculations, that is, the photon count transmission is multiplied by λ and normalized so that peak transmission is equal to 1.<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=leff&val=8822.2788893719&id=UKIRT/WFCAM.Z><p>Filter transmission is transformed to "<i>energy counter</i>" for these calculations, that is, the photon count transmission is multiplied by λ and normalized so that peak transmission is equal to 1.<p><u>More info:</u><p>Vega spectrum from calspec database.<ul><li><a href="https://ui.adsabs.harvard.edu/abs/2014PASP..126..711B/abstract" target="_blank">Bohlin, Gordon, & Tremblay (2014)</a>.<li><a href="https://www.stsci.edu/hst/instrumentation/reference-data-for-calibration-and-tools/astronomical-catalogs/calspec" target="_blank">STScI current calspec</a>.<li><a href="morefiles/vega.dat" target="_blank">Vega spectrum file</a> (units: Angstrom erg/cm2/s/A).</ul><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=8826.3506362815&id=UKIRT/WFCAM.Z><p>Filter transmission is transformed to "<i>energy counter</i>" for these calculations, that is, the photon count transmission is multiplied by λ and normalized so that peak transmission is equal to 1.<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=8831.0275957787&id=UKIRT/WFCAM.Z><p>Filter transmission is transformed to "<i>energy counter</i>" for these calculations, that is, the photon count transmission is multiplied by λ and normalized so that peak transmission is equal to 1.<p><u>More info:</u><p>Vega spectrum from calspec database.<ul><li><a href="https://ui.adsabs.harvard.edu/abs/2014PASP..126..711B/abstract" target="_blank">Bohlin, Gordon, & Tremblay (2014)</a>.<li><a href="https://www.stsci.edu/hst/instrumentation/reference-data-for-calibration-and-tools/astronomical-catalogs/calspec" target="_blank">STScI current calspec</a>.<li><a href="morefiles/vega.dat" target="_blank">Vega spectrum file</a> (units: Angstrom erg/cm2/s/A).</ul><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=845.56463979122,8829.992384659,1&id=UKIRT/WFCAM.Z><p>Filter transmission is transformed to "<i>energy counter</i>" for these calculations, that is, the photon count transmission is multiplied by λ and normalized so that peak transmission is equal to 1.<p><u>Property info:</u><ul><li><b>Unit</b>:Angstrom<li><b>UCD</b>:instr.bandwidth<li><b>Utype</b>: <i>photdm:PhotometryFilter.bandwidth.extent.value</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>ref</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/extlaw.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><img src="images/sun.png"><p><p>Filter transmission is transformed to "<i>energy counter</i>" for these calculations, that is, the photon count transmission is multiplied by λ and normalized so that peak transmission is equal to 1.<p><u>More info:</u><p>Sun spectrum from calspec database: sun_reference_stis_002 composed with sun_mod_001 for larger wavelengths.<ul><li><a href="https://ui.adsabs.harvard.edu/abs/2014PASP..126..711B/abstract" target="_blank">Bohlin, Gordon, & Tremblay (2014)</a>.<li><a href="https://www.stsci.edu/hst/instrumentation/reference-data-for-calibration-and-tools/astronomical-catalogs/calspec" target="_blank">STScI current calspec</a>.<li><a href="morefiles/sun.dat" target="_blank">Sun composed spectrum</a> (units: Angstrom erg/cm2/s/A).</ul><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>ref</sub><sup>2</sup> * F<sub>0,λ</sub>(erg/cm<sup>2</sup>/s/A)<p>Filter transmission is transformed to \"<i>energy counter</i>\" for these calculations, that is, the photon count transmission is multiplied by λ and normalized so that peak transmission is equal to 1.<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>More info:</u><p>Vega spectrum from calspec database.<ul><li><a href="https://ui.adsabs.harvard.edu/abs/2014PASP..126..711B/abstract" target="_blank">Bohlin, Gordon, & Tremblay (2014)</a>.<li><a href="https://www.stsci.edu/hst/instrumentation/reference-data-for-calibration-and-tools/astronomical-catalogs/calspec" target="_blank">STScI current calspec</a>.<li><a href="morefiles/vega.dat" target="_blank">Vega spectrum file</a> (units: Angstrom erg/cm2/s/A).</ul><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}
