Subaru :Subaru Telescope Subaru/FOCAS :The Faint Object Camera and Spectrograph (FOCAS) is a versatile optical imaging and spectroscopy unit which can be installed at the Cassegrain focus of Subaru Telescope.id:Subaru/FOCAS.a → GaiaXPy base XML file. You can download here the GaiaXPy base XML file for the full Subaru/FOCAS filter set. Please, take a look to the GaiaXPy web page and additional documentation for more information. |
| Subaru/FOCAS.U | 3574.69 | 3591.19 | 3636.11 | 3047.20 | 4106.59 | 550.05 | 1649.91 | 3.87e-9 | Subaru | FOCAS | FOCAS U | | Subaru/FOCAS.U | Filter Description | Filter ID (?) : | Subaru/FOCAS.U |
| Description (?) : | FOCAS U |
| Phot.System (?) : | FOCAS |
| Detector Type (?) : | Energy counter |
| Band Name (?) : | U |
| Obs. Facility (?) : | Subaru |
| Instrument (?) : | FOCAS |
| Comments (?) : | ------ |
| | Mathematical properties | Property | Calculated | Specified | Unit | | λref (?) : |
3574.69 | ------- | (Angstrom) |
| λmean (?) : |
3591.19 | ------- | (Angstrom) |
| λcen (?) : |
3596.52 | ------- | (Angstrom) |
| λeff (?) : |
3636.11 | ------- | (Angstrom) |
| λpeak (?) : |
3610.00 | ------- | (Angstrom) |
| λpivot (?) : |
3574.69 | ------- | (Angstrom) |
| λphot (?) : |
3648.55 | ------- | (Angstrom) |
| λmin (?) : |
3047.20 | ------- | (Angstrom) |
| λmax (?) : |
4106.59 | ------- | (Angstrom) |
| Weff (?) : |
550.05 | ------- | (Angstrom) |
| FWHM (?) : |
564.79 | ------- | (Angstrom) |
| Af/AV (?) : |
1.59 | ------- | () |
| Fsun (?) : |
103.11 | ------- | (erg/cm2/s/A) |
| Transmission
Data file: ascii, VOTable Reference for filter response:
SUBARU: FOCAS Transmission components: Filterid:Subaru/FOCAS.U
You can download here the GaiaXPy base XML file for the full Subaru/FOCAS 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 (?) : |
------- |
3.87083e-9 | (erg/cm2/s/A) |
| |
------- |
1649.91 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Subaru/FOCAS.U/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
8.51864e-9 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Subaru/FOCAS.U/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
1547.68 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Subaru/FOCAS.U/ST |
| |
|
Filter added: 2011-10-18 08:08:43
Last update: 2021-07-27 20:38:02 | | Subaru/FOCAS.N373 | 3732.61 | 3732.78 | 3734.85 | 3671.57 | 3790.00 | 59.85 | 1678.65 | 3.61e-9 | Subaru | FOCAS | FOCAS N373 | | Subaru/FOCAS.N386 | 3856.85 | 3857.35 | 3860.27 | 3761.53 | 3957.17 | 109.68 | 3144.56 | 6.34e-9 | Subaru | FOCAS | FOCAS N386 | | Subaru/FOCAS.B | 4372.43 | 4410.10 | 4372.52 | 3637.57 | 5102.56 | 1023.38 | 3982.50 | 6.24e-9 | Subaru | FOCAS | FOCAS B | | Subaru/FOCAS.N487 | 4874.29 | 4874.40 | 4876.62 | 4820.17 | 4929.10 | 53.83 | 3090.67 | 3.9e-9 | Subaru | FOCAS | FOCAS N487 | | Subaru/FOCAS.N502 | 5020.57 | 5020.70 | 5020.43 | 4961.39 | 5079.26 | 59.98 | 3944.21 | 4.69e-9 | Subaru | FOCAS | FOCAS N502 | | Subaru/FOCAS.N512 | 5115.37 | 5115.50 | 5115.24 | 5060.00 | 5170.00 | 61.09 | 3886.96 | 4.45e-9 | Subaru | FOCAS | FOCAS N512 | | Subaru/FOCAS.V | 5464.17 | 5489.32 | 5440.74 | 4804.36 | 6181.68 | 972.32 | 3629.91 | 3.64e-9 | Subaru | FOCAS | FOCAS V | | Subaru/FOCAS.N642 | 6417.40 | 6417.76 | 6417.00 | 6320.66 | 6516.17 | 125.67 | 3054.79 | 2.22e-9 | Subaru | FOCAS | FOCAS N642 | | Subaru/FOCAS.N658 | 6571.53 | 6571.66 | 6572.33 | 6510.00 | 6630.00 | 73.53 | 2539.16 | 1.76e-9 | Subaru | FOCAS | FOCAS N658 | | Subaru/FOCAS.R | 6549.06 | 6577.22 | 6519.09 | 5844.05 | 7445.59 | 1159.30 | 2978.12 | 2.08e-9 | Subaru | FOCAS | FOCAS R | | Subaru/FOCAS.N670 | 6706.24 | 6706.41 | 6706.11 | 6640.00 | 6778.71 | 84.30 | 2919.93 | 1.95e-9 | Subaru | FOCAS | FOCAS N670 | | Subaru/FOCAS.I | 8034.36 | 8070.97 | 7997.15 | 7097.96 | 9077.86 | 1454.65 | 2402.02 | 1.12e-9 | Subaru | FOCAS | FOCAS I |
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 ≡ 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=3591.1909738246&id=Subaru/FOCAS.U><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=3636.1095408958&id=Subaru/FOCAS.U><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=3574.6899138247&id=Subaru/FOCAS.U><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=3648.5546862176&id=Subaru/FOCAS.U><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=550.05060565179,3596.5156926407,0.7211&id=Subaru/FOCAS.U><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}
