|
| GCPD/Washington.C_ph | 3871.1 | 3972.9 | 2900 | 4900 | 1125.5 | 2807.9 | | | Washington C filter in GCPD, photographic version (ADPS) | | GCPD/Washington.C_pe | 3915.5 | 4003.5 | 3110 | 4816 | 1020.2 | 2926.6 | | | Washington C filter in GCPD, photoelectric version (ADPS) | | GCPD/Washington.C_pe | Filter Description | Filter ID (?) : | GCPD/Washington.C_pe |
| Description (?) : | Washington C filter in GCPD, photoelectric version (ADPS) |
| Phot.System (?) : | Washington |
| Detector Type (?) : | Energy counter |
| Band Name (?) : | C |
| Obs. Facility (?) : | ------ |
| Instrument (?) : | ------ |
| Comments (?) : | 0.42m reflector KPNO, 0.77m reflector, Manastash Obs.
RCA C31034 Ga-As (refrigerated)
4 mm Corning CS-7-59 + 2.5 mm 80% CuSO4-H2O
Canterna 1976: http://adsabs.harvard.edu/abs/1976AJ.....81..228C
|
| | Mathematical properties | Property | Calculated | Specified | Unit | | λmean (?) : |
3915.52 | ------- | (Angstrom) |
| λcen (?) : |
3905.48 | ------- | (Angstrom) |
| λeff (?) : |
4003.51 | ------- | (Angstrom) |
| λpeak (?) : |
3900.00 | ------- | (Angstrom) |
| λpivot (?) : |
3869.75 | ------- | (Angstrom) |
| λphot (?) : |
4028.81 | ------- | (Angstrom) |
| λmin (?) : |
3110.50 | ------- | (Angstrom) |
| λmax (?) : |
4816.00 | ------- | (Angstrom) |
| Weff (?) : |
1020.23 | ------- | (Angstrom) |
| FWHM (?) : |
1049.05 | ------- | (Angstrom) |
| Af/AV (?) : |
1.44 | ------- | () |
| Transmission curve
Data file: ascii, VOTable Reference for filter response:
ADPS | | Calibration properties
Vega System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
5.474e-9 | (erg/cm2/s/A) |
| |
------- |
2926.64 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
GCPD/Washington.C_pe/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
6.791e-9 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
GCPD/Washington.C_pe/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
1941.28 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
GCPD/Washington.C_pe/ST |
| |
|
Filter added: 2014-12-07 04:04:12
Last update: 2018-03-21 17:34:01 | | GCPD/Washington.M_pe | 5074.0 | 5015.2 | 4322 | 5978 | 943.7 | 3816.9 | | | Washington M filter in GCPD, photoelectric version (ADPS) | | GCPD/Washington.M_ph | 5117.8 | 5095.8 | 4606 | 5770 | 636.7 | 3778.0 | | | Washington M filter in GCPD, photographic version (ADPS) | | GCPD/Washington.T1_pe | 6400.9 | 6339.9 | 5617 | 7633 | 806.0 | 3056.2 | | | Washington T1 filter in GCPD, photoelectric version (ADPS) | | GCPD/Washington.T1_ph | 6534.8 | 6501.9 | 5911 | 7247 | 705.7 | 2969.5 | | | Washington T1 filter in GCPD, photographic version (ADPS) | | GCPD/Washington.T2_pe | 8002.0 | 7934.7 | 7109 | 8798 | 1352.0 | 2414.4 | | | Washington T2 filter in GCPD, photoelectric version (ADPS) | | GCPD/Washington.T2_ph | 8053.3 | 7975.7 | 7111 | 9093 | 1427.3 | 2406.7 | | | Washington T2 filter in GCPD, photographic version (ADPS) |
| Filter Plots
 |
|
© SVO, 5065 filters available, Last update: 2019-11-30 | 
 ≡ 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}
</b><br><table cellpadding=20><td class=helptd>Zero Point in Vega System.<p>Calculated by the service as:<p><img src=images/latex/zp.png> <p>where:<p> T(λ) ≡ 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>eff</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<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=3915.5242638619&id=GCPD/Washington.C_pe><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=4003.5118664726&id=GCPD/Washington.C_pe><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=3869.7486241092&id=GCPD/Washington.C_pe><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=4028.8089397376&id=GCPD/Washington.C_pe><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=1020.2278095238,3905.4761904762,0.84&id=GCPD/Washington.C_pe><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>eff</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> Vg(λ) ≡ Vega spectrum<p>F<sub>0,ν</sub>(Jy) = (2.9979246)<sup>-1</sup> 10<sup>5</sup> * λ<sub>eff</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}