CFHT :Canada-France-Hawaii Telescope CFHT/Megaprime :MegaPrime/MegaCam is the wide-field optical imaging facility at CFHT. |
| CFHT/Megaprime.u_sdss | 3522.37 | 3549.06 | 3610.12 | 3041.46 | 4013.63 | 825.24 | 1744.78 | 4.01e-9 | CFHT | Megaprime | Megaprime u', cfh9302 | | CFHT/Megaprime.u | 3724.26 | 3745.59 | 3827.15 | 3235.03 | 4292.41 | 712.32 | 2404.30 | 4.92e-9 | CFHT | Megaprime | Megaprime U', cfh9301 | | CFHT/Megaprime.CaHK | 3952.92 | 3953.24 | 3950.99 | 3885.75 | 4022.49 | 94.18 | 3785.75 | 7.27e-9 | CFHT | Megaprime | Megaprime CaHK, cfh9303 | | CFHT/Megaprime.g_sdss | 4691.80 | 4753.89 | 4650.03 | 3945.93 | 5553.42 | 1486.35 | 3952.03 | 5.48e-9 | CFHT | Megaprime | Megaprime g', cfh9402 | | CFHT/Megaprime.g | 4802.96 | 4858.44 | 4760.30 | 4002.99 | 5794.67 | 1368.32 | 3922.68 | 5.19e-9 | CFHT | Megaprime | Megaprime G', cfh9401 | | CFHT/Megaprime.OIII | 5005.75 | 5006.02 | 5005.48 | 4933.54 | 5078.55 | 98.90 | 3953.90 | 4.73e-9 | CFHT | Megaprime | Megaprime OIII, cfh9501 | | CFHT/Megaprime.OIII_off | 5105.01 | 5105.28 | 5104.75 | 5033.43 | 5179.17 | 100.31 | 3888.56 | 4.47e-9 | CFHT | Megaprime | Megaprime OIII off, cfh9502 | | CFHT/Megaprime.gri | 5703.60 | 6070.19 | 5392.23 | 3958.09 | 8188.85 | 4040.13 | 3164.47 | 3.26e-9 | CFHT | Megaprime | Megaprime gri, cfh9605 | | CFHT/Megaprime.r | 6243.29 | 6274.24 | 6208.03 | 5427.33 | 7041.61 | 1097.32 | 3117.23 | 2.42e-9 | CFHT | Megaprime | Megaprime R', cfh9601 | | CFHT/Megaprime.r_sdss | 6355.94 | 6398.60 | 6310.21 | 5614.31 | 7207.89 | 1446.96 | 3059.68 | 2.3e-9 | CFHT | Megaprime | Megaprime r', cfh9602 | | CFHT/Megaprime.Halpha_off | 6452.86 | 6453.07 | 6452.53 | 6361.90 | 6542.72 | 92.32 | 3048.20 | 2.19e-9 | CFHT | Megaprime | Megaprime Halpha off, cfh7604 | | CFHT/Megaprime.Halpha_on | 6583.56 | 6583.70 | 6585.73 | 6506.65 | 6643.00 | 77.99 | 2575.97 | 1.78e-9 | CFHT | Megaprime | Megaprime Halpha on, cfh7605 | | CFHT/Megaprime.Halpha | 6589.40 | 6589.62 | 6591.94 | 6519.11 | 6662.75 | 104.07 | 2645.91 | 1.83e-9 | CFHT | Megaprime | Megaprime Halpha, cfh9603 | | CFHT/Megaprime.Halpha_Off_2 | 6718.16 | 6718.39 | 6717.94 | 6646.17 | 6794.17 | 107.66 | 2933.25 | 1.95e-9 | CFHT | Megaprime | Megaprime Halpha Off, cfh9604 | | CFHT/Megaprime.i_sdss | 7721.35 | 7760.51 | 7678.45 | 6910.83 | 8648.35 | 1521.72 | 2502.04 | 1.27e-9 | CFHT | Megaprime | Megaprime i', cfh9703 | | CFHT/Megaprime.i | 7723.24 | 7761.65 | 7681.13 | 6741.31 | 8778.51 | 1465.50 | 2501.58 | 1.27e-9 | CFHT | Megaprime | Megaprime I' #2, cfh9702 | | CFHT/Megaprime.i1 | 7723.17 | 7761.67 | 7681.00 | 6741.31 | 8778.51 | 1466.08 | 2501.55 | 1.27e-9 | CFHT | Megaprime | Megaprime I', cfh9701 | | CFHT/Megaprime.TiO | 7777.16 | 7777.80 | 7776.44 | 7626.93 | 7935.81 | 184.59 | 2494.45 | 1.24e-9 | CFHT | Megaprime | Megaprime TiO, cfh7701 | | CFHT/Megaprime.CN | 8119.99 | 8120.54 | 8119.35 | 7954.16 | 8284.36 | 164.95 | 2377.01 | 1.08e-9 | CFHT | Megaprime | Megaprime CN, cfh7803 | | CFHT/Megaprime.NB920 | 9208.02 | 9209.38 | 9206.71 | 8962.00 | 9466.00 | 243.06 | 2285.98 | 8.09e-10 | CFHT | Megaprime | Megaprime NB920, cfh7902 | | CFHT/Megaprime.z_sdss | 9223.43 | 9255.62 | 9209.98 | 8371.92 | 10154.78 | 1513.21 | 2242.14 | 7.92e-10 | CFHT | Megaprime | Megaprime z', cfh9901 | | CFHT/Megaprime.z | 9964.69 | 10140.74 | 9808.36 | 8008.89 | 12000.00 | 3646.80 | 2030.63 | 6.33e-10 | CFHT | Megaprime | Megaprime Z', cfh9801 | | CFHT/Megaprime.z | Filter Description | Filter ID (?) : | CFHT/Megaprime.z |
| Description (?) : | Megaprime Z', cfh9801 |
| Phot.System (?) : | Megaprime |
| Detector Type (?) : | Energy counter |
| Band Name (?) : | z |
| Obs. Facility (?) : | CFHT |
| Instrument (?) : | Megaprime |
| Comments (?) : | ------ |
| | Mathematical properties | Property | Calculated | Specified | Unit | | λref (?) : |
9964.69 | ------- | (Angstrom) |
| λmean (?) : |
10140.74 | ------- | (Angstrom) |
| λcen (?) : |
10134.05 | ------- | (Angstrom) |
| λeff (?) : |
9808.36 | ------- | (Angstrom) |
| λpeak (?) : |
10720.00 | ------- | (Angstrom) |
| λpivot (?) : |
9964.69 | ------- | (Angstrom) |
| λphot (?) : |
9920.60 | ------- | (Angstrom) |
| λmin (?) : |
8008.89 | ------- | (Angstrom) |
| λmax (?) : |
12000.00 | ------- | (Angstrom) |
| Weff (?) : |
3646.80 | ------- | (Angstrom) |
| FWHM (?) : |
3731.90 | ------- | (Angstrom) |
| Af/AV (?) : |
0.442 | ------- | () |
| Fsun (?) : |
72.65 | ------- | (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 (?) : |
------- |
6.32789e-10 | (erg/cm2/s/A) |
| |
------- |
2030.63 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
CFHT/Megaprime.z/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
1.1315e-9 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
CFHT/Megaprime.z/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
11651.94 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
CFHT/Megaprime.z/ST |
| |
|
Filter added: 2011-10-18 02:13:26
Last update: 2020-12-10 16:28:38 |
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 ≡ 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>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.SpectralAxis.Coverage.Bounds.Extent</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>Utype</b>: <i>photdm:PhotometricSystem.detectorType</i></ul></td></table>',WIDTH,400)){kind=link}
 ≡ filter transmission<p><img src=showgraph.php?what=lmean&val=10140.740467863&id=CFHT/Megaprime.z><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=9808.358919666&id=CFHT/Megaprime.z><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=9964.6942739995&id=CFHT/Megaprime.z><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=9920.6031424888&id=CFHT/Megaprime.z><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=3646.8043723957,10134.051008786,0.94777&id=CFHT/Megaprime.z><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><img src=images/sunspec.png><p><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>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}
