Astrosat :ASTROSAT is India first dedicated multi wavelength space observatory. Astrosat/UVIT :Filters for the Astrosat UV Imaging Telescope |
| Astrosat/UVIT.F148W | 1481.00 | 1481.00 | 1481.00 | 1250.22 | 1750.00 | 414.22 | 460.08 | 5.84e-9 | Astrosat | UVIT | UVIT F148W filter | | Astrosat/UVIT.F148Wa | 1485.00 | 1485.00 | 1485.00 | 1250.24 | 1750.00 | 402.18 | 466.03 | 5.88e-9 | Astrosat | UVIT | UVIT F148Wa filter | | Astrosat/UVIT.F154W | 1541.00 | 1541.00 | 1541.00 | 1340.54 | 1799.08 | 372.00 | 530.53 | 6.46e-9 | Astrosat | UVIT | UVIT F154W filter | | Astrosat/UVIT.F169M | 1608.00 | 1608.00 | 1608.00 | 1428.40 | 1799.15 | 277.17 | 571.66 | 6.64e-9 | Astrosat | UVIT | UVIT F169M filter | | Astrosat/UVIT.F172M | 1717.00 | 1717.00 | 1717.00 | 1620.00 | 1828.44 | 118.39 | 627.83 | 6.37e-9 | Astrosat | UVIT | UVIT F172M filter | | Astrosat/UVIT.N219M | 2196.00 | 2196.00 | 2196.00 | 1946.96 | 2409.50 | 249.63 | 765.42 | 4.78e-9 | Astrosat | UVIT | UVIT N219M filter | | Astrosat/UVIT.N242W | 2418.00 | 2418.00 | 2418.00 | 1700.00 | 3050.00 | 767.17 | 819.28 | 4.18e-9 | Astrosat | UVIT | UVIT N242W filter | | Astrosat/UVIT.N245M | 2447.00 | 2447.00 | 2447.00 | 2192.73 | 2632.97 | 255.74 | 789.43 | 3.95e-9 | Astrosat | UVIT | UVIT N245M filter | | Astrosat/UVIT.N263M | 2632.00 | 2632.00 | 2632.00 | 2462.36 | 2842.22 | 259.99 | 880.85 | 3.79e-9 | Astrosat | UVIT | UVIT N263M filter | | Astrosat/UVIT.N263M | Filter Description | Filter ID (?) : | Astrosat/UVIT.N263M |
| Description (?) : | UVIT N263M filter |
| Phot.System (?) : | UVIT |
| Detector Type (?) : | Photon counter |
| Band Name (?) : | ------ |
| Obs. Facility (?) : | Astrosat |
| Instrument (?) : | UVIT |
| Comments (?) : | ------ |
| | Mathematical properties | Property | Calculated | Specified | Unit | | λref (?) : |
2635.77 | 2632 | (Angstrom) |
| λmean (?) : |
2639.67 | 2632 | (Angstrom) |
| λcen (?) : |
2638.40 | ------- | (Angstrom) |
| λeff (?) : |
2639.20 | 2632 | (Angstrom) |
| λpeak (?) : |
2601.70 | ------- | (Angstrom) |
| λpivot (?) : |
2635.77 | ------- | (Angstrom) |
| λphot (?) : |
2641.76 | ------- | (Angstrom) |
| λmin (?) : |
2462.36 | ------- | (Angstrom) |
| λmax (?) : |
2842.22 | ------- | (Angstrom) |
| Weff (?) : |
259.99 | ------- | (Angstrom) |
| FWHM (?) : |
271.61 | ------- | (Angstrom) |
| Af/AV (?) : |
2.11 | ------- | () |
| Fsun (?) : |
------- | ------- | (erg/cm2/s/A) |
| Effective area
Data file: ascii, VOTable Reference for filter response:
UVIT | | Calibration properties
Vega System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.79123e-9 | (erg/cm2/s/A) |
| |
------- |
880.85 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Astrosat/UVIT.N263M/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
1.5628e-8 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Astrosat/UVIT.N263M/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
843.62 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Astrosat/UVIT.N263M/ST |
| |
Reference for calibration:
Tandon et al 2017, ApJ 154, 128 |
Filter added: 2017-07-27 01:46:45
Last update: 2020-08-30 19:08:07 | | Astrosat/UVIT.N279N | 2792.00 | 2792.00 | 2792.00 | 2721.92 | 2876.50 | 81.43 | 930.75 | 3.58e-9 | Astrosat | UVIT | UVIT N279N filter | | Astrosat/UVIT.VIS1 | 3466.00 | 3466.00 | 3466.00 | 3186.41 | 3738.62 | 371.29 | 1277.62 | 3.17e-9 | Astrosat | UVIT | UVIT VIS1 filter | | Astrosat/UVIT.VIS2 | 3909.00 | 3909.00 | 3909.00 | 3619.20 | 4166.45 | 360.35 | 3273.96 | 6.34e-9 | Astrosat | UVIT | UVIT VIS2 filter | | Astrosat/UVIT.BK7 | 4200.00 | 4200.00 | 4200.00 | 3064.99 | 5495.00 | 1817.15 | 3382.55 | 5.25e-9 | Astrosat | UVIT | UVIT BK7 filter | | Astrosat/UVIT.ND1 | 4354.00 | 4354.00 | 4354.00 | 3577.69 | 5446.79 | 949.36 | 3992.70 | 5.97e-9 | Astrosat | UVIT | UVIT ND1 filter | | Astrosat/UVIT.VIS3 | 4614.00 | 4614.00 | 4614.00 | 3869.42 | 5325.00 | 1156.88 | 4036.95 | 5.86e-9 | Astrosat | UVIT | UVIT VIS3 filter |
|
© SVO, 8400 filters available, Last update: 2020-09-01 | 
 ≡ 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>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<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>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<br> Vg(λ) ≡ Vega spectrum<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=2639.6659749457&id=Astrosat/UVIT.N263M><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=2639.1962823214&id=Astrosat/UVIT.N263M><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=2635.7650846011&id=Astrosat/UVIT.N263M><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=2641.764323839&id=Astrosat/UVIT.N263M><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=259.98676161916,2638.4040882655,35.3243&id=Astrosat/UVIT.N263M><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>Sun spectrum from calspec database: sun_reference_stis_002 with sun_mod_001 for larger wavelengths.<p><img src=images/sunspec.png><p><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>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}