|
| Astrosat/UVIT.F148W | 1481.00 | 1481.00 | 1481.00 | 1250.27 | 1799.21 | 429.96 | 3631.00 | 4.84e-8 | Astrosat | UVIT | UVIT F148W filter | | Astrosat/UVIT.F148W_old | 1481.00 | 1481.00 | 1481.00 | 1250.27 | 1750.00 | 414.22 | 3631.00 | 4.89e-8 | Astrosat | UVIT | UVIT F148W filter (old) | | Astrosat/UVIT.F148Wa | 1485.00 | 1485.00 | 1485.00 | 1250.29 | 1750.00 | 402.18 | 3631.00 | 4.86e-8 | Astrosat | UVIT | UVIT F148Wa filter | | Astrosat/UVIT.F154W | 1541.00 | 1541.00 | 1541.00 | 1340.58 | 1799.24 | 371.95 | 3631.00 | 4.52e-8 | Astrosat | UVIT | UVIT F154W filter | | Astrosat/UVIT.F154W_old | 1541.00 | 1541.00 | 1541.00 | 1340.58 | 1799.24 | 372.00 | 3631.00 | 4.52e-8 | Astrosat | UVIT | UVIT F154W filter (old) | | Astrosat/UVIT.F169M | 1608.00 | 1608.00 | 1608.00 | 1428.94 | 1799.26 | 277.29 | 3631.00 | 4.25e-8 | Astrosat | UVIT | UVIT F169M filter | | Astrosat/UVIT.F169M_old | 1608.00 | 1608.00 | 1608.00 | 1428.98 | 1799.26 | 277.17 | 3631.00 | 4.25e-8 | Astrosat | UVIT | UVIT F169M filter (old) | | Astrosat/UVIT.F172M | 1717.00 | 1717.00 | 1717.00 | 1620.00 | 1828.51 | 118.23 | 3631.00 | 3.69e-8 | Astrosat | UVIT | UVIT F172M filter | | Astrosat/UVIT.F172M_old | 1717.00 | 1717.00 | 1717.00 | 1620.00 | 1828.51 | 118.43 | 3631.00 | 3.69e-8 | Astrosat | UVIT | UVIT F172M filter (old) | | Astrosat/UVIT.N219M | 2196.00 | 2196.00 | 2196.00 | 1948.32 | 2410.00 | 249.88 | 3631.00 | 2.26e-8 | Astrosat | UVIT | UVIT N219M filter | | Astrosat/UVIT.N219M_old | 2196.00 | 2196.00 | 2196.00 | 1948.08 | 2409.50 | 249.63 | 3631.00 | 2.26e-8 | Astrosat | UVIT | UVIT N219M filter (old) | | Astrosat/UVIT.N242W | 2418.00 | 2418.00 | 2418.00 | 1700.00 | 3050.00 | 767.13 | 3631.00 | 1.87e-8 | Astrosat | UVIT | UVIT N242W filter | | Astrosat/UVIT.N242W_old | 2418.00 | 2418.00 | 2418.00 | 1700.00 | 3050.00 | 767.17 | 3631.00 | 1.87e-8 | Astrosat | UVIT | UVIT N242W filter (old) | | Astrosat/UVIT.N245M | 2447.00 | 2447.00 | 2447.00 | 2195.08 | 2634.78 | 255.77 | 3631.00 | 1.82e-8 | Astrosat | UVIT | UVIT N245M filter | | Astrosat/UVIT.N245M_old | 2447.00 | 2447.00 | 2447.00 | 2194.69 | 2634.71 | 255.73 | 3631.00 | 1.82e-8 | Astrosat | UVIT | UVIT N245M filter (old) | | Astrosat/UVIT.N263M | 2632.00 | 2632.00 | 2632.00 | 2462.90 | 2842.96 | 260.20 | 3631.00 | 1.57e-8 | Astrosat | UVIT | UVIT N263M filter | | Astrosat/UVIT.N263M_old | 2632.00 | 2632.00 | 2632.00 | 2462.42 | 2842.46 | 259.99 | 3631.00 | 1.57e-8 | Astrosat | UVIT | UVIT N263M filter (old) | | Astrosat/UVIT.N279N | 2792.00 | 2792.00 | 2792.00 | 2722.26 | 2877.19 | 81.42 | 3631.00 | 1.4e-8 | Astrosat | UVIT | UVIT N279N filter | | Astrosat/UVIT.N279N_old | 2792.00 | 2792.00 | 2792.00 | 2722.06 | 2877.15 | 81.43 | 3631.00 | 1.4e-8 | Astrosat | UVIT | UVIT N279N filter (old) | | Astrosat/UVIT.VIS1 | 3466.00 | 3466.00 | 3466.00 | 3186.97 | 3738.73 | 371.29 | 3631.00 | 9.02e-9 | Astrosat | UVIT | UVIT VIS1 filter | | Astrosat/UVIT.VIS2 | 3909.00 | 3909.00 | 3909.00 | 3621.46 | 4166.70 | 360.35 | 3631.00 | 7.14e-9 | Astrosat | UVIT | UVIT VIS2 filter | | Astrosat/UVIT.BK7 | 4200.00 | 4200.00 | 4200.00 | 3076.29 | 5495.00 | 1817.15 | 3631.00 | 5.98e-9 | Astrosat | UVIT | UVIT BK7 filter | | Astrosat/UVIT.BK7 | Filter Description | Filter ID (?) : | Astrosat/UVIT.BK7 |
| Description (?) : | UVIT BK7 filter |
| Phot.System (?) : | UVIT |
| Detector Type (?) : | Photon counter |
| Band Name (?) : | ------ |
| Obs. Facility (?) : | Astrosat |
| Instrument (?) : | UVIT |
| Comments (?) : | ------ |
| | Mathematical properties | Property | Calculated | Specified | Unit | | λref (?) : |
4264.92 | 4200 | (Angstrom) |
| λmean (?) : |
4395.35 | 4200 | (Angstrom) |
| λcen (?) : |
4421.18 | ------- | (Angstrom) |
| λeff (?) : |
4392.31 | 4200 | (Angstrom) |
| λpeak (?) : |
4385.00 | ------- | (Angstrom) |
| λpivot (?) : |
4264.92 | ------- | (Angstrom) |
| λphot (?) : |
4457.16 | ------- | (Angstrom) |
| λmin (?) : |
3076.29 | ------- | (Angstrom) |
| λmax (?) : |
5495.00 | ------- | (Angstrom) |
| Weff (?) : |
1817.15 | ------- | (Angstrom) |
| FWHM (?) : |
2147.63 | ------- | (Angstrom) |
| Af/AV (?) : |
1.34 | ------- | () |
| Fsun (?) : |
163.28 | ------- | (erg/cm2/s/A) |
| Effective area
Data file: ascii, VOTable Reference for filter response:
UVITid:Astrosat/UVIT.BK7
You can download here the GaiaXPy base XML file for the full Astrosat/UVIT 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 (?) : |
------- |
5.28121e-9 | (erg/cm2/s/A) |
| |
------- |
3204.31 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Astrosat/UVIT.BK7/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
5.98446e-9 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Astrosat/UVIT.BK7/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
2203.07 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Astrosat/UVIT.BK7/ST |
| |
Reference for calibration:
Tandon et al 2017, ApJ 154, 128 |
Filter added: 2017-07-27 01:45:34
Last update: 2021-09-24 14:19:58 | | Astrosat/UVIT.ND1 | 4354.00 | 4354.00 | 4354.00 | 3584.82 | 5452.59 | 949.36 | 3631.00 | 5.4e-9 | Astrosat | UVIT | UVIT ND1 filter | | Astrosat/UVIT.VIS3 | 4614.00 | 4614.00 | 4614.00 | 3878.26 | 5325.00 | 1156.87 | 3631.00 | 5.2e-9 | Astrosat | UVIT | UVIT VIS3 filter |
|
| 
 ≡ 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=4395.3540697899&id=Astrosat/UVIT.BK7><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=4392.3132190596&id=Astrosat/UVIT.BK7><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=4264.921591426&id=Astrosat/UVIT.BK7><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=4457.162544335&id=Astrosat/UVIT.BK7><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=1817.1539866754,4421.1827717433,1&id=Astrosat/UVIT.BK7><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}
