NAOC :National Astronomical Observatories of China. NAOC/BFOSC :Beijing-Faint Object Spectrograph and Camera (BFOSC) |
| NAOC/BFOSC.U | 3639.1 | 3690.9 | 3151 | 4128 | 546.5 | 1832.0 | Xinglong | BFOSC | BFOSC U filter | | NAOC/BFOSC.B | 4370.1 | 4342.1 | 3559 | 5704 | 970.7 | 3948.1 | Xinglong | BFOSC | BFOSC B filter | | NAOC/BFOSC.V | 5405.8 | 5345.8 | 4645 | 6538 | 982.9 | 3626.7 | Xinglong | BFOSC | BFOSC V filter | | NAOC/BFOSC.385LP | 6053.8 | 5296.7 | 3532 | 8443 | 4277.1 | 3107.6 | Xinglong | BFOSC | BFOSC 385LP filter | | NAOC/BFOSC.R | 6451.1 | 6322.9 | 5551 | 8470 | 1252.7 | 3039.2 | Xinglong | BFOSC | BFOSC R filter | | NAOC/BFOSC.Ha_C1 | 6549.3 | 6547.2 | 6472 | 6630 | 65.8 | 2554.8 | Xinglong | BFOSC | BFOSC Halpha C1 filter | | NAOC/BFOSC.Ha_C12 | 6552.6 | 6550.5 | 6383 | 6676 | 143.5 | 2735.7 | Xinglong | BFOSC | BFOSC Halpha C12 filter | | NAOC/BFOSC.Ha_C2 | 6599.1 | 6601.1 | 6517 | 6720 | 64.1 | 2697.4 | Xinglong | BFOSC | BFOSC Halpha C2 filter | | NAOC/BFOSC.Ha_C3 | 6649.8 | 6649.8 | 6548 | 6754 | 71.0 | 2937.4 | Xinglong | BFOSC | BFOSC Halpha C3 filter | | NAOC/BFOSC.Ha_C4 | 6710.0 | 6709.8 | 6634 | 6781 | 60.7 | 2936.9 | Xinglong | BFOSC | BFOSC Halpha C4 filter | | NAOC/BFOSC.Ha_C5 | 6756.6 | 6756.4 | 6675 | 6827 | 60.2 | 2917.9 | Xinglong | BFOSC | BFOSC Halpha C5 filter | | NAOC/BFOSC.Ha_C6 | 6807.1 | 6806.8 | 6727 | 6890 | 62.5 | 2896.2 | Xinglong | BFOSC | BFOSC Halpha C6 filter | | NAOC/BFOSC.Ha_C7 | 6858.2 | 6858.0 | 6790 | 6927 | 63.0 | 2873.2 | Xinglong | BFOSC | BFOSC Halpha C7 filter | | NAOC/BFOSC.Ha_C8 | 6910.7 | 6910.4 | 6834 | 6985 | 63.8 | 2850.2 | Xinglong | BFOSC | BFOSC Halpha C8 filter | | NAOC/BFOSC.Ha_C9 | 6957.0 | 6956.8 | 6875 | 7041 | 66.3 | 2829.7 | Xinglong | BFOSC | BFOSC Halpha C9 filter | | NAOC/BFOSC.Ha_C10 | 7012.9 | 7012.7 | 6937 | 7096 | 61.7 | 2804.0 | Xinglong | BFOSC | BFOSC Halpha C10 filter | | NAOC/BFOSC.Ha_C11 | 7065.1 | 7064.8 | 6973 | 7156 | 66.2 | 2782.2 | Xinglong | BFOSC | BFOSC Halpha C11 filter | | NAOC/BFOSC.Ha_C11 | Filter Description | Filter ID (?) : | NAOC/BFOSC.Ha_C11 |
| Description (?) : | BFOSC Halpha C11 filter |
| Phot.System (?) : | BFOSC |
| Detector Type (?) : | Energy counter |
| Band Name (?) : | ------ |
| Obs. Facility (?) : | Xinglong |
| Instrument (?) : | BFOSC |
| Comments (?) : | ------ |
| | Mathematical properties | Property | Calculated | Specified | Unit | | λmean (?) : |
7065.11 | ------- | (Angstrom) |
| λcen (?) : |
7066.33 | ------- | (Angstrom) |
| λeff (?) : |
7064.84 | ------- | (Angstrom) |
| λpeak (?) : |
7062.81 | ------- | (Angstrom) |
| λpivot (?) : |
7064.98 | ------- | (Angstrom) |
| λphot (?) : |
7064.92 | ------- | (Angstrom) |
| λmin (?) : |
6972.92 | ------- | (Angstrom) |
| λmax (?) : |
7156.23 | ------- | (Angstrom) |
| Weff (?) : |
66.16 | ------- | (Angstrom) |
| FWHM (?) : |
61.81 | ------- | (Angstrom) |
| Af/AV (?) : |
0.72 | ------- | () |
| Fsun (?) : |
------- | ------- | (erg/cm2/s/A) |
| Transmission
Data file: ascii, VOTable Reference for filter response:
Xinglong Observatory: 2.16-m Telescope Transmission components: Filter | | Calibration properties
Vega System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
1.671e-9 | (erg/cm2/s/A) |
| |
------- |
2782.18 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
NAOC/BFOSC.Ha_C11/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
2.181e-9 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
NAOC/BFOSC.Ha_C11/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
6045.19 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
NAOC/BFOSC.Ha_C11/ST |
| |
|
Filter added: 2018-12-14 22:33:32
Last update: 2020-03-23 12:58:04 | | NAOC/BFOSC.I | 8998.4 | 8658.5 | 6929 | 12348 | 3263.0 | 2243.9 | Xinglong | BFOSC | BFOSC I filter | | NAOC/BFOSC.Z | 10511.9 | 10300.9 | 8575 | 11919 | 2563.8 | 1989.6 | Xinglong | BFOSC | BFOSC Z filter |
|
© SVO, 6356 filters available, Last update: 2020-07-31 | 
 ≡ 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=7065.1073351859&id=NAOC/BFOSC.Ha_C11><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=7064.8377401381&id=NAOC/BFOSC.Ha_C11><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=7064.9800698052&id=NAOC/BFOSC.Ha_C11><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=7064.922751982&id=NAOC/BFOSC.Ha_C11><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=66.160586928445,7066.3265681707,0.84174643&id=NAOC/BFOSC.Ha_C11><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> Sun(λ) ≡ Sun spectrum<p>Sun spectrum from calspec database: sun_reference_stis_002 with 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>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}