| FengYun/FY3A-IRAS.CH21 | 7025.97 | 7038.39 | 7014.50 | 6537.59 | 8594.41 | 439.07 | 2773.72 | 1.69e-9 | FY-3A | IRAS | FY-3A IRAS Channel 21 Spectral Response |
| FengYun/FY3A-IRAS.CH21 | Filter Description | Filter ID (?) : | FengYun/FY3A-IRAS.CH21 |
| Description (?) : | FY-3A IRAS Channel 21 Spectral Response |
| Phot.System (?) : | IRAS |
| Detector Type (?) : | Photon counter |
| Band Name (?) : | ------ |
| Obs. Facility (?) : | FY-3A |
| Instrument (?) : | IRAS |
| Comments (?) : | ------ |
| | Mathematical properties | Property | Calculated | Specified | Unit | | λref (?) : |
7025.97 | ------- | (Angstrom) |
| λmean (?) : |
7038.39 | ------- | (Angstrom) |
| λcen (?) : |
6992.14 | ------- | (Angstrom) |
| λeff (?) : |
7014.50 | ------- | (Angstrom) |
| λpeak (?) : |
7100.00 | ------- | (Angstrom) |
| λpivot (?) : |
7025.97 | ------- | (Angstrom) |
| λphot (?) : |
7021.59 | ------- | (Angstrom) |
| λmin (?) : |
6537.59 | ------- | (Angstrom) |
| λmax (?) : |
8594.41 | ------- | (Angstrom) |
| Weff (?) : |
439.07 | ------- | (Angstrom) |
| FWHM (?) : |
431.42 | ------- | (Angstrom) |
| Af/AV (?) : |
0.73 | ------- | () |
| Fsun (?) : |
141.08 | ------- | (erg/cm2/s/A) |
| Transmission
Data file: ascii, VOTable Reference for filter response:
FengYun Spectral Response Functions Transmission components: Filter + CCD + Instrument | | Calibration properties
Vega System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
1.69001e-9 | (erg/cm2/s/A) |
| |
------- |
2773.72 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
FengYun/FY3A-IRAS.CH21/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
2.21235e-9 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
FengYun/FY3A-IRAS.CH21/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
5959.35 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
FengYun/FY3A-IRAS.CH21/ST |
| |
|
Filter added: 2020-08-19 11:44:43
Last update: 2020-12-10 16:28:57 |
| FengYun/FY3A-IRAS.CH22 | 8865.47 | 8867.79 | 8865.36 | 8547.68 | 9239.23 | 330.81 | 2262.31 | 8.63e-10 | FY-3A | IRAS | FY-3A IRAS Channel 22 Spectral Response |
| FengYun/FY3A-IRAS.CH23 | 9436.75 | 9440.32 | 9433.41 | 9050.97 | 9822.82 | 447.39 | 2207.19 | 7.44e-10 | FY-3A | IRAS | FY-3A IRAS Channel 23 Spectral Response |
| FengYun/FY3A-IRAS.CH24 | 9452.61 | 9453.25 | 9449.64 | 9243.12 | 9640.26 | 164.96 | 2244.72 | 7.54e-10 | FY-3A | IRAS | FY-3A IRAS Channel 24 Spectral Response |
| FengYun/FY3A-IRAS.CH25 | 12377.17 | 12393.26 | 12351.38 | 11343.93 | 13468.77 | 1004.54 | 1549.99 | 3.05e-10 | FY-3A | IRAS | FY-3A IRAS Channel 25 Spectral Response |
| FengYun/FY3A-IRAS.CH26 | 16630.20 | 16654.88 | 16600.51 | 15147.85 | 18748.52 | 1321.24 | 988.78 | 1.08e-10 | FY-3A | IRAS | FY-3A IRAS Channel 26 Spectral Response |
| FengYun/FY3A-IRAS.CH20 | 37620.78 | 37632.72 | 37603.74 | 35695.99 | 39991.55 | 1273.97 | 240.48 | 5.1e-12 | FY-3A | IRAS | FY-3A IRAS Channel 20 Spectral Response |
| FengYun/FY3A-IRAS.CH19 | 39803.81 | 39806.12 | 39799.18 | 38969.63 | 40815.13 | 557.99 | 218.86 | 4.14e-12 | FY-3A | IRAS | FY-3A IRAS Channel 19 Spectral Response |
| FengYun/FY3A-IRAS.CH18 | 41779.02 | 41780.44 | 41777.96 | 41122.36 | 42498.02 | 420.31 | 196.78 | 3.38e-12 | FY-3A | IRAS | FY-3A IRAS Channel 18 Spectral Response |
| FengYun/FY3A-IRAS.CH17 | 44437.79 | 44439.46 | 44435.53 | 43658.19 | 45216.98 | 521.42 | 178.86 | 2.72e-12 | FY-3A | IRAS | FY-3A IRAS Channel 17 Spectral Response |
| FengYun/FY3A-IRAS.CH16 | 44682.26 | 44683.81 | 44679.89 | 43902.05 | 45409.61 | 510.46 | 177.13 | 2.66e-12 | FY-3A | IRAS | FY-3A IRAS Channel 16 Spectral Response |
| FengYun/FY3A-IRAS.CH15 | 45195.18 | 45197.06 | 45192.17 | 44371.64 | 45986.78 | 552.03 | 173.36 | 2.54e-12 | FY-3A | IRAS | FY-3A IRAS Channel 15 Spectral Response |
| FengYun/FY3A-IRAS.CH14 | 45661.60 | 45663.31 | 45658.63 | 44788.00 | 46486.86 | 532.55 | 169.97 | 2.44e-12 | FY-3A | IRAS | FY-3A IRAS Channel 14 Spectral Response |
| FengYun/FY3A-IRAS.CH13 | 65404.07 | 65436.17 | 65353.46 | 62159.97 | 69664.44 | 2130.91 | 85.91 | 6.03e-13 | FY-3A | IRAS | FY-3A IRAS Channel 13 Spectral Response |
| FengYun/FY3A-IRAS.CH12 | 73368.30 | 73391.34 | 73326.17 | 69234.88 | 77094.89 | 2486.51 | 68.60 | 3.83e-13 | FY-3A | IRAS | FY-3A IRAS Channel 12 Spectral Response |
| FengYun/FY3A-IRAS.CH11 | 74643.28 | 74689.28 | 74566.66 | 69883.88 | 80060.09 | 3235.83 | 65.90 | 3.55e-13 | FY-3A | IRAS | FY-3A IRAS Channel 11 Spectral Response |
| FengYun/FY3A-IRAS.CH10 | 96789.86 | 96808.53 | 96760.05 | 93323.45 | 100400.48 | 2264.06 | 40.26 | 1.29e-13 | FY-3A | IRAS | FY-3A IRAS Channel 10 Spectral Response |
| FengYun/FY3A-IRAS.CH09 | 111154.64 | 111211.89 | 111057.35 | 104158.11 | 118524.24 | 4309.60 | 30.65 | 7.45e-14 | FY-3A | IRAS | FY-3A IRAS Channel 9 Spectral Response |
| FengYun/FY3A-IRAS.CH08 | 124511.54 | 124564.46 | 124408.81 | 116877.31 | 131490.95 | 4612.74 | 24.33 | 4.71e-14 | FY-3A | IRAS | FY-3A IRAS Channel 8 Spectral Response |
| FengYun/FY3A-IRAS.CH07 | 133643.21 | 133665.81 | 133605.87 | 128146.74 | 139526.27 | 3169.52 | 21.39 | 3.59e-14 | FY-3A | IRAS | FY-3A IRAS Channel 7 Spectral Response |
| FengYun/FY3A-IRAS.CH06 | 136553.12 | 136571.08 | 136522.55 | 131285.50 | 141860.22 | 2908.66 | 20.48 | 3.29e-14 | FY-3A | IRAS | FY-3A IRAS Channel 6 Spectral Response |
| FengYun/FY3A-IRAS.CH05 | 139835.51 | 139854.05 | 139804.89 | 134771.51 | 145150.04 | 2866.28 | 19.55 | 3.0e-14 | FY-3A | IRAS | FY-3A IRAS Channel 5 Spectral Response |
| FengYun/FY3A-IRAS.CH04 | 142232.29 | 142249.08 | 142204.91 | 137276.72 | 146473.05 | 2967.34 | 18.89 | 2.8e-14 | FY-3A | IRAS | FY-3A IRAS Channel 4 Spectral Response |
| FengYun/FY3A-IRAS.CH03 | 144698.95 | 144716.85 | 144669.97 | 139349.07 | 149660.47 | 2952.56 | 18.26 | 2.62e-14 | FY-3A | IRAS | FY-3A IRAS Channel 3 Spectral Response |
| FengYun/FY3A-IRAS.CH02 | 147705.53 | 147721.56 | 147679.85 | 143133.62 | 152630.56 | 2812.45 | 17.54 | 2.41e-14 | FY-3A | IRAS | FY-3A IRAS Channel 2 Spectral Response |
| FengYun/FY3A-IRAS.CH01 | 149458.96 | 149463.25 | 149451.79 | 146935.50 | 151624.14 | 775.60 | 17.15 | 2.3e-14 | FY-3A | IRAS | FY-3A IRAS Channel 1 Spectral Response |
 ≡ 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=7038.3876872708&id=FengYun/FY3A-IRAS.CH21><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 (photon counter)<br> Vg(λ) ≡ Vega spectrum<p><img src=showgraph.php?what=leff&val=7014.4967965979&id=FengYun/FY3A-IRAS.CH21><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=7025.965763513&id=FengYun/FY3A-IRAS.CH21><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 (photon counter)<br> Vg(λ) ≡ Vega spectrum<p><img src=showgraph.php?what=lphot&val=7021.5865129726&id=FengYun/FY3A-IRAS.CH21><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=439.06931386472,6992.1397938721,0.01&id=FengYun/FY3A-IRAS.CH21><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 (photon counter).<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 (photon counter).<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}
