LCO :Las Campanas Observatory LCO/FourStar :The Four Star infrared camera is a 4096 x 4096 equivalent pixel area covering the J,H,Ks bands that employs an array of four Teledyne HAWAII-2RG detectors that produce a 10.9' x 10.9' field of view.id:LCO/FourStar.a |
| LCO/FourStar.J1 | 10538.94 | 10551.44 | 10520.66 | 9907.99 | 11209.51 | 955.50 | 1957.65 | 5.28e-10 | LCO | FourStar | LCO, FourStar J1 | | LCO/FourStar.J2 | 11430.97 | 11452.70 | 11407.09 | 10600.65 | 12380.92 | 1329.69 | 1752.84 | 4.02e-10 | LCO | FourStar | LCO, FourStar J2 | | LCO/FourStar.NB118 | 11908.75 | 11909.00 | 11908.45 | 11788.32 | 12030.15 | 138.46 | 1660.11 | 3.51e-10 | LCO | FourStar | LCO, FourStar NB1.18 | | LCO/FourStar.J | 12361.81 | 12415.15 | 12287.26 | 11096.42 | 13726.05 | 2214.62 | 1572.12 | 3.08e-10 | LCO | FourStar | LCO, FourStar J | | LCO/FourStar.J3 | 12862.76 | 12883.34 | 12834.86 | 12003.10 | 13779.45 | 1325.04 | 1467.60 | 2.66e-10 | LCO | FourStar | LCO, FourStar J3 | | LCO/FourStar.Hshort | 15509.19 | 15530.33 | 15479.22 | 14518.30 | 16536.50 | 1542.67 | 1100.21 | 1.37e-10 | LCO | FourStar | LCO, FourStar Hshort | | LCO/FourStar.H | 16124.00 | 16187.61 | 16039.55 | 14545.51 | 17858.60 | 2769.45 | 1043.27 | 1.2e-10 | LCO | FourStar | LCO, FourStar H | | LCO/FourStar.Hlong | 17023.22 | 17042.16 | 17000.55 | 16021.22 | 18088.58 | 1565.04 | 961.40 | 9.95e-11 | LCO | FourStar | LCO, FourStar Hlong | | LCO/FourStar.NB209 | 20989.14 | 20989.46 | 20988.64 | 20808.45 | 21171.30 | 213.18 | 688.19 | 4.68e-11 | LCO | FourStar | LCO, FourStar NB 2.09 | | LCO/FourStar.Ks | 21414.85 | 21480.26 | 21315.89 | 19559.84 | 23515.71 | 3163.40 | 665.95 | 4.35e-11 | LCO | FourStar | LCO, FourStar Ks | | LCO/FourStar.Ks | Filter Description | Filter ID (?) : | LCO/FourStar.Ks |
| Description (?) : | LCO, FourStar Ks |
| Phot.System (?) : | FourStar |
| Detector Type (?) : | Energy counter |
| Band Name (?) : | Ks |
| Obs. Facility (?) : | LCO |
| Instrument (?) : | FourStar |
| Comments (?) : | ------ |
| | Mathematical properties | Property | Calculated | Specified | Unit | | λref (?) : |
21414.85 | ------- | (Angstrom) |
| λmean (?) : |
21480.26 | ------- | (Angstrom) |
| λcen (?) : |
21512.26 | ------- | (Angstrom) |
| λeff (?) : |
21315.89 | ------- | (Angstrom) |
| λpeak (?) : |
20780.00 | ------- | (Angstrom) |
| λpivot (?) : |
21414.85 | ------- | (Angstrom) |
| λphot (?) : |
21359.06 | ------- | (Angstrom) |
| λmin (?) : |
19559.84 | ------- | (Angstrom) |
| λmax (?) : |
23515.71 | ------- | (Angstrom) |
| Weff (?) : |
3163.40 | ------- | (Angstrom) |
| FWHM (?) : |
3325.34 | ------- | (Angstrom) |
| Af/AV (?) : |
0.127 | ------- | () |
| Fsun (?) : |
9.10 | ------- | (erg/cm2/s/A) |
| Transmission
Data file: ascii, VOTable Reference for filter response:
Las Campanas, FourStarid:LCO/FourStar.Ks | | Calibration properties
Vega System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
4.35342e-11 | (erg/cm2/s/A) |
| |
------- |
665.95 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
LCO/FourStar.Ks/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
2.37365e-10 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
LCO/FourStar.Ks/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
55543.82 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
LCO/FourStar.Ks/ST |
| |
|
Filter added: 2014-06-01 14:05:58
Last update: 2021-07-27 20:10:59 |
|
| 
 ≡ 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=21480.258581096&id=LCO/FourStar.Ks><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=21315.891054756&id=LCO/FourStar.Ks><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=21414.853139613&id=LCO/FourStar.Ks><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=21359.062956182&id=LCO/FourStar.Ks><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=3163.3962698595,21512.263973094,0.8686&id=LCO/FourStar.Ks><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><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}
