CFHT :Canada-France-Hawaii Telescope CFHT/Megaprime :MegaPrime/MegaCam is the wide-field optical imaging facility at CFHT. |
| CFHT/Megaprime.u_sdss | 3549.1 | 3610.1 | 3041 | 4014 | 825.2 | 1744.8 | CFHT | Megaprime | Megaprime u', cfh9302 | | CFHT/Megaprime.u | 3745.6 | 3827.2 | 3235 | 4292 | 712.3 | 2404.3 | CFHT | Megaprime | Megaprime U', cfh9301 | | CFHT/Megaprime.CaHK | 3953.2 | 3951.0 | 3886 | 4022 | 94.2 | 3785.7 | CFHT | Megaprime | Megaprime CaHK, cfh9303 | | CFHT/Megaprime.g_sdss | 4753.9 | 4650.0 | 3946 | 5553 | 1486.4 | 3952.0 | CFHT | Megaprime | Megaprime g', cfh9402 | | CFHT/Megaprime.g | 4858.4 | 4760.3 | 4003 | 5795 | 1368.3 | 3922.7 | CFHT | Megaprime | Megaprime G', cfh9401 | | CFHT/Megaprime.OIII | 5006.0 | 5005.5 | 4934 | 5079 | 98.9 | 3953.9 | CFHT | Megaprime | Megaprime OIII, cfh9501 | | CFHT/Megaprime.OIII_off | 5105.3 | 5104.8 | 5033 | 5179 | 100.3 | 3888.6 | CFHT | Megaprime | Megaprime OIII off, cfh9502 | | CFHT/Megaprime.gri | 6070.2 | 5392.2 | 3958 | 8189 | 4040.1 | 3164.5 | CFHT | Megaprime | Megaprime gri, cfh9605 | | CFHT/Megaprime.r | 6274.2 | 6208.0 | 5427 | 7042 | 1097.3 | 3117.2 | CFHT | Megaprime | Megaprime R', cfh9601 | | CFHT/Megaprime.r_sdss | 6398.6 | 6310.2 | 5614 | 7208 | 1447.0 | 3059.7 | CFHT | Megaprime | Megaprime r', cfh9602 | | CFHT/Megaprime.Halpha_off | 6453.1 | 6452.5 | 6362 | 6543 | 92.3 | 3048.2 | CFHT | Megaprime | Megaprime Halpha off, cfh7604 | | CFHT/Megaprime.Halpha_on | 6583.7 | 6585.7 | 6507 | 6643 | 78.0 | 2576.0 | CFHT | Megaprime | Megaprime Halpha on, cfh7605 | | CFHT/Megaprime.Halpha | 6589.6 | 6591.9 | 6519 | 6663 | 104.1 | 2645.9 | CFHT | Megaprime | Megaprime Halpha, cfh9603 | | CFHT/Megaprime.Halpha_Off_2 | 6718.4 | 6717.9 | 6646 | 6794 | 107.7 | 2933.2 | CFHT | Megaprime | Megaprime Halpha Off, cfh9604 | | CFHT/Megaprime.i_sdss | 7760.5 | 7678.4 | 6911 | 8648 | 1521.7 | 2502.0 | CFHT | Megaprime | Megaprime i', cfh9703 | | CFHT/Megaprime.i | 7761.7 | 7681.1 | 6741 | 8779 | 1465.5 | 2501.6 | CFHT | Megaprime | Megaprime I' #2, cfh9702 | | CFHT/Megaprime.i1 | 7761.7 | 7681.0 | 6741 | 8779 | 1466.1 | 2501.6 | CFHT | Megaprime | Megaprime I', cfh9701 | | CFHT/Megaprime.TiO | 7777.8 | 7776.4 | 7627 | 7936 | 184.6 | 2494.5 | CFHT | Megaprime | Megaprime TiO, cfh7701 | | CFHT/Megaprime.TiO | Filter Description | Filter ID (?) : | CFHT/Megaprime.TiO |
| Description (?) : | Megaprime TiO, cfh7701 |
| Phot.System (?) : | Megaprime |
| Detector Type (?) : | Energy counter |
| Band Name (?) : | ------ |
| Obs. Facility (?) : | CFHT |
| Instrument (?) : | Megaprime |
| Comments (?) : | ------ |
| | Mathematical properties | Property | Calculated | Specified | Unit | | λmean (?) : |
7777.80 | ------- | (Angstrom) |
| λcen (?) : |
7777.13 | ------- | (Angstrom) |
| λeff (?) : |
7776.44 | ------- | (Angstrom) |
| λpeak (?) : |
7710.00 | ------- | (Angstrom) |
| λpivot (?) : |
7777.16 | ------- | (Angstrom) |
| λphot (?) : |
7776.87 | ------- | (Angstrom) |
| λmin (?) : |
7626.93 | ------- | (Angstrom) |
| λmax (?) : |
7935.81 | ------- | (Angstrom) |
| Weff (?) : |
184.59 | ------- | (Angstrom) |
| FWHM (?) : |
183.57 | ------- | (Angstrom) |
| Af/AV (?) : |
0.64 | ------- | () |
| Fsun (?) : |
------- | ------- | (erg/cm2/s/A) |
| Transmission
Data file: ascii, VOTable Reference for filter response:
CFHT Megaprime Transmission components: Filter | | Calibration properties
Vega System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
1.237e-9 | (erg/cm2/s/A) |
| |
------- |
2494.45 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
CFHT/Megaprime.TiO/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
1.800e-9 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
CFHT/Megaprime.TiO/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
7324.32 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
CFHT/Megaprime.TiO/ST |
| |
|
Filter added: 2011-10-18 02:13:01
Last update: 2020-03-23 12:58:04 | | CFHT/Megaprime.CN | 8120.5 | 8119.4 | 7954 | 8284 | 164.9 | 2377.0 | CFHT | Megaprime | Megaprime CN, cfh7803 | | CFHT/Megaprime.NB920 | 9209.4 | 9206.7 | 8962 | 9466 | 243.1 | 2286.0 | CFHT | Megaprime | Megaprime NB920, cfh7902 | | CFHT/Megaprime.z_sdss | 9255.6 | 9210.0 | 8372 | 10155 | 1513.2 | 2242.1 | CFHT | Megaprime | Megaprime z', cfh9901 | | CFHT/Megaprime.z | 10140.7 | 9808.4 | 8009 | 12000 | 3646.8 | 2030.6 | CFHT | Megaprime | Megaprime Z', cfh9801 |
|
© 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=7777.7969077921&id=CFHT/Megaprime.TiO><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=7776.4419193323&id=CFHT/Megaprime.TiO><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=7777.1568606828&id=CFHT/Megaprime.TiO><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=7776.8689021519&id=CFHT/Megaprime.TiO><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=184.59241294401,7777.1293053112,0.92253&id=CFHT/Megaprime.TiO><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}