CTIO :Cerro Tololo Inter-American Observatory CTIO/DECam :Dark Energy Camera (DECam) is a high-performance, wide-field CCD imager mounted at the prime focus of the Blanco 4-m telescope at CTIO. |
| CTIO/DECam.u_filter | 3580.8 | 3648.7 | 3034 | 4039 | 764.5 | 1852.2 | CTIO | DECam | DECam u filter (filter only) | | CTIO/DECam.u | 3821.7 | 3857.1 | 3340 | 4040 | 263.6 | 2734.6 | CTIO | DECam | DECam u filter (total transmission). DR1 | | CTIO/DECam.u_old | 3821.7 | 3857.1 | 3340 | 4040 | 263.6 | 2734.6 | CTIO | DECam | DECam u filter (total transmission). Old. | | CTIO/DECam.g_filter | 4774.0 | 4674.3 | 3929 | 5554 | 1314.0 | 3941.5 | CTIO | DECam | DECam g filter (filter only) | | CTIO/DECam.g_old | 4862.2 | 4770.9 | 3939 | 5528 | 1005.0 | 3905.2 | CTIO | DECam | DECam u filter (total transmission). Old. | | CTIO/DECam.g | 4862.2 | 4770.8 | 3925 | 5530 | 1003.7 | 3905.0 | CTIO | DECam | DECam g filter (total transmission). DR1 | | CTIO/DECam.VR_filter | 6354.4 | 6078.2 | 4895 | 7655 | 2215.5 | 3086.9 | CTIO | DECam | DECam VR filter (filter only) | | CTIO/DECam.r_filter | 6444.8 | 6355.2 | 5618 | 7260 | 1369.1 | 3036.3 | CTIO | DECam | DECam r filter (filter only) | | CTIO/DECam.r | 6460.6 | 6371.3 | 5520 | 7234 | 1276.2 | 3027.3 | CTIO | DECam | DECam r filter (total transmission). DR1 | | CTIO/DECam.r_old | 6463.9 | 6374.3 | 5506 | 7238 | 1262.6 | 3025.7 | CTIO | DECam | DECam r filter (total transmission). Old. | | CTIO/DECam.i_old | 7849.4 | 7773.5 | 6950 | 8646 | 1267.1 | 2468.5 | CTIO | DECam | DECam i filter (total transmission). Old. | | CTIO/DECam.i | 7850.8 | 7774.2 | 6948 | 8646 | 1281.0 | 2467.8 | CTIO | DECam | DECam i filter (total transmission). DR1 | | CTIO/DECam.i_filter | 7858.8 | 7784.9 | 6983 | 8706 | 1369.6 | 2465.0 | CTIO | DECam | DECam i filter (filter only) | | CTIO/DECam.z | 9199.3 | 9157.9 | 8341 | 10074 | 1289.3 | 2247.3 | CTIO | DECam | DECam z filter (total transmission). DR1 | | CTIO/DECam.z | Filter Description | Filter ID (?) : | CTIO/DECam.z |
| Description (?) : | DECam z filter (total transmission). DR1 |
| Phot.System (?) : | DECam |
| Detector Type (?) : | Photon counter |
| Band Name (?) : | z |
| Obs. Facility (?) : | CTIO |
| Instrument (?) : | DECam |
| Comments (?) : | The system response includes the total throughput of the system (instrument + atmosphere).
|
| | Mathematical properties | Property | Calculated | Specified | Unit | | λmean (?) : |
9199.29 | ------- | (Angstrom) |
| λcen (?) : |
9229.48 | ------- | (Angstrom) |
| λeff (?) : |
9157.90 | ------- | (Angstrom) |
| λpeak (?) : |
8890.00 | ------- | (Angstrom) |
| λpivot (?) : |
9168.86 | ------- | (Angstrom) |
| λphot (?) : |
9177.79 | ------- | (Angstrom) |
| λmin (?) : |
8341.20 | ------- | (Angstrom) |
| λmax (?) : |
10074.26 | ------- | (Angstrom) |
| Weff (?) : |
1289.33 | ------- | (Angstrom) |
| FWHM (?) : |
1471.42 | ------- | (Angstrom) |
| Af/AV (?) : |
0.49 | ------- | () |
| Fsun (?) : |
------- | ------- | (erg/cm2/s/A) |
| Transmission
Data file: ascii, VOTable Reference for filter response:
Dark Energy Camera Transmission components: Filter + Instrument + Atmosphere | | Calibration properties
Vega System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
8.033e-10 | (erg/cm2/s/A) |
| |
------- |
2247.33 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
CTIO/DECam.z/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
1.298e-9 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
CTIO/DECam.z/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
10157.74 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
CTIO/DECam.z/ST |
| |
|
Filter added: 2020-01-11 14:30:03
Last update: 2020-03-23 12:58:04 | | CTIO/DECam.z_old | 9200.1 | 9158.1 | 8284 | 10102 | 1307.5 | 2247.1 | CTIO | DECam | DECam z filter (total transmission). Old. | | CTIO/DECam.z_filter | 9281.7 | 9236.3 | 8360 | 10166 | 1422.9 | 2241.6 | CTIO | DECam | DECam z filter (filter only) | | CTIO/DECam.Y_old | 9903.5 | 9882.7 | 9355 | 10730 | 690.0 | 2146.0 | CTIO | DECam | DECam Y filter (total transmission). Old. | | CTIO/DECam.Y | 9906.8 | 9886.4 | 9365 | 10686 | 674.5 | 2146.2 | CTIO | DECam | DECam Y filter (total transmission). DR1 | | CTIO/DECam.Y_filter | 10102.6 | 10071.3 | 9400 | 10805 | 1091.6 | 2107.9 | CTIO | DECam | DECam Y filter (filter only) |
|
© 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=9199.2876765616&id=CTIO/DECam.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=9157.8985435297&id=CTIO/DECam.z><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=9168.8614808957&id=CTIO/DECam.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=9177.7919099957&id=CTIO/DECam.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<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=1289.3259690872,9229.4814706449,0.97688&id=CTIO/DECam.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>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}