WHT :William Herschel Telescope WHT/LRIS :LIRIS (Long-slit Intermediate Resolution Infrared Spectrograph) is a near-IR imager/spectrograph for use at the Cassegrain focus of the 4.2m William Herschel Telescope. |
| WHT/LRIS.Z | 10329.75 | 10334.30 | 10326.43 | 9697.60 | 10926.72 | 507.09 | 2063.74 | 5.8e-10 | WHT | LRIS | LRIS Z | | WHT/LRIS.Jc | 12312.11 | 12312.69 | 12311.32 | 12112.00 | 12596.40 | 186.66 | 1608.30 | 3.18e-10 | WHT | LRIS | LRIS Jc | | WHT/LRIS.J | 12488.25 | 12516.58 | 12447.42 | 11010.00 | 13995.00 | 1544.37 | 1556.60 | 3.01e-10 | WHT | LRIS | LRIS J | | WHT/LRIS.J | Filter Description | Filter ID (?) : | WHT/LRIS.J |
| Description (?) : | LRIS J |
| Phot.System (?) : | LRIS |
| Detector Type (?) : | Energy counter |
| Band Name (?) : | J |
| Obs. Facility (?) : | WHT |
| Instrument (?) : | LRIS |
| Comments (?) : | ------ |
| | Mathematical properties | Property | Calculated | Specified | Unit | | λref (?) : |
12488.25 | ------- | (Angstrom) |
| λmean (?) : |
12516.58 | ------- | (Angstrom) |
| λcen (?) : |
12508.97 | ------- | (Angstrom) |
| λeff (?) : |
12447.42 | ------- | (Angstrom) |
| λpeak (?) : |
12935.40 | ------- | (Angstrom) |
| λpivot (?) : |
12488.25 | ------- | (Angstrom) |
| λphot (?) : |
12466.37 | ------- | (Angstrom) |
| λmin (?) : |
11010.00 | ------- | (Angstrom) |
| λmax (?) : |
13995.00 | ------- | (Angstrom) |
| Weff (?) : |
1544.37 | ------- | (Angstrom) |
| FWHM (?) : |
1561.50 | ------- | (Angstrom) |
| Af/AV (?) : |
0.301 | ------- | () |
| Fsun (?) : |
44.65 | ------- | (erg/cm2/s/A) |
| Transmission
Data file: ascii, VOTable Reference for filter response:
ING: LRIS Transmission components: Filter | | Calibration properties
Vega System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.01189e-10 | (erg/cm2/s/A) |
| |
------- |
1556.60 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
WHT/LRIS.J/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
7.02568e-10 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
WHT/LRIS.J/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
18765.66 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
WHT/LRIS.J/ST |
| |
|
Filter added: 2011-10-18 09:33:25
Last update: 2020-12-10 16:34:24 | | WHT/LRIS.Pab | 12945.35 | 12946.01 | 12946.57 | 12711.40 | 13195.80 | 211.29 | 1456.73 | 2.61e-10 | WHT | LRIS | LRIS Pab | | WHT/LRIS.Hc | 15773.52 | 15774.75 | 15771.67 | 15214.00 | 16398.10 | 243.85 | 1082.31 | 1.3e-10 | WHT | LRIS | LRIS Hc | | WHT/LRIS.H | 16189.15 | 16262.19 | 16093.91 | 14097.30 | 18198.20 | 2828.81 | 1049.01 | 1.21e-10 | WHT | LRIS | LRIS H | | WHT/LRIS.FeII | 16467.57 | 16468.61 | 16468.37 | 16013.00 | 16994.90 | 270.31 | 1016.57 | 1.12e-10 | WHT | LRIS | LRIS FeII | | WHT/LRIS.CH4 | 16823.29 | 16843.06 | 16797.44 | 15177.12 | 18496.70 | 1376.28 | 993.64 | 1.06e-10 | WHT | LRIS | LRIS CH4 | | WHT/LRIS.HeI | 20612.29 | 20613.70 | 20610.16 | 20017.70 | 21192.10 | 312.60 | 727.47 | 5.13e-11 | WHT | LRIS | LRIS HeI | | WHT/LRIS.H2p10 | 21240.66 | 21242.31 | 21237.83 | 20518.30 | 21991.10 | 339.09 | 688.78 | 4.58e-11 | WHT | LRIS | LRIS H2p10 | | WHT/LRIS.Ks | 21411.65 | 21472.76 | 21319.24 | 19016.50 | 23935.70 | 3012.80 | 675.84 | 4.46e-11 | WHT | LRIS | LRIS Ks | | WHT/LRIS.Brg | 21710.45 | 21712.67 | 21708.63 | 21018.80 | 22491.70 | 360.33 | 641.26 | 4.08e-11 | WHT | LRIS | LRIS Brg | | WHT/LRIS.H2p21 | 22416.73 | 22418.51 | 22414.12 | 21712.00 | 23098.20 | 403.07 | 627.69 | 3.75e-11 | WHT | LRIS | LRIS H2p21 | | WHT/LRIS.Kc | 22671.23 | 22673.41 | 22667.99 | 22010.40 | 23396.60 | 350.30 | 615.41 | 3.59e-11 | WHT | LRIS | LRIS Kc |
|
| 
 ≡ 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>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.SpectralAxis.Coverage.Bounds.Extent</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>Utype</b>: <i>photdm:PhotometricSystem.detectorType</i></ul></td></table>',WIDTH,400)){kind=link}
 ≡ filter transmission<p><img src=showgraph.php?what=lmean&val=12516.575257&id=WHT/LRIS.J><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=12447.4154116&id=WHT/LRIS.J><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=12488.247317347&id=WHT/LRIS.J><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=12466.3681108&id=WHT/LRIS.J><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=1544.37095795,12508.9706157,0.85098&id=WHT/LRIS.J><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>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/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><img src=images/sunspec.png><p><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>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}
