COBE :Cosmic Background Explorer COBE/DIRBE :Cosmic Background Explorer/DIRBE (Diffuse Infrared Background Experiment) filters |
| COBE/DIRBE.1p25m | 12703.47 | 12815.18 | 12554.31 | 10780.00 | 15060.00 | 2937.56 | 1511.51 | 2.88e-10 | COBE | DIRBE | DIRBE 1.25 micron filter | | COBE/DIRBE.2p2m | 22229.80 | 22315.64 | 22102.03 | 19470.00 | 25170.00 | 3425.75 | 632.85 | 3.88e-11 | COBE | DIRBE | DIRBE 2.2 micron filter | | COBE/DIRBE.3p5m | 35453.47 | 35796.36 | 34914.17 | 29630.00 | 42060.00 | 8242.06 | 275.21 | 6.77e-12 | COBE | DIRBE | DIRBE 3.5 micron filter | | COBE/DIRBE.4p9m | 48867.46 | 48994.45 | 48668.69 | 43390.00 | 53425.00 | 6632.33 | 152.47 | 1.93e-12 | COBE | DIRBE | DIRBE 4.9 micron filter | | COBE/DIRBE.4p9m | Filter Description | Filter ID (?) : | COBE/DIRBE.4p9m |
| Description (?) : | DIRBE 4.9 micron filter |
| Phot.System (?) : | DIRBE |
| Detector Type (?) : | Photon counter |
| Band Name (?) : | ------ |
| Obs. Facility (?) : | COBE |
| Instrument (?) : | DIRBE |
| Comments (?) : | Normalized system (filter + detector) response function. |
| | Mathematical properties | Property | Calculated | Specified | Unit | | λref (?) : |
48867.46 | ------- | (Angstrom) |
| λmean (?) : |
48994.45 | ------- | (Angstrom) |
| λcen (?) : |
49017.62 | ------- | (Angstrom) |
| λeff (?) : |
48668.69 | ------- | (Angstrom) |
| λpeak (?) : |
47630.00 | ------- | (Angstrom) |
| λpivot (?) : |
48867.46 | ------- | (Angstrom) |
| λphot (?) : |
48753.62 | ------- | (Angstrom) |
| λmin (?) : |
43390.00 | ------- | (Angstrom) |
| λmax (?) : |
53425.00 | ------- | (Angstrom) |
| Weff (?) : |
6632.33 | ------- | (Angstrom) |
| FWHM (?) : |
6736.08 | ------- | (Angstrom) |
| Af/AV (?) : |
0.0474 | ------- | () |
| Fsun (?) : |
0.352 | ------- | (erg/cm2/s/A) |
| Transmission
Data file: ascii, VOTable Reference for filter response:
LAMBDA - COBE DIRBE Transmission components: Filter + Instrument | | Calibration properties
Vega System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
1.92972e-12 | (erg/cm2/s/A) |
| |
------- |
152.47 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
COBE/DIRBE.4p9m/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
4.59566e-11 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
COBE/DIRBE.4p9m/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
286883.07 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
COBE/DIRBE.4p9m/ST |
| |
|
Filter added: 2017-08-28 01:00:04
Last update: 2020-12-10 16:28:40 | | COBE/DIRBE.12m | 125353.66 | 132393.92 | 113395.11 | 76560.00 | 174670.00 | 52660.66 | 23.82 | 5.55e-14 | COBE | DIRBE | DIRBE 12 micron filter | | COBE/DIRBE.25m | 209943.55 | 216067.75 | 200152.52 | 155430.00 | 291910.00 | 65659.70 | 8.81 | 6.59e-15 | COBE | DIRBE | DIRBE 25 micron filter | | COBE/DIRBE.60m | 567211.31 | 588833.43 | 529628.06 | 303490.00 | 815290.00 | 238908.85 | 1.19 | 1.27e-16 | COBE | DIRBE | DIRBE 60 micron filter | | COBE/DIRBE.100m | 985105.13 | 1.01e+6 | 941198.75 | 655680.00 | 1.34e+6 | 291160.42 | 0.393 | 1.33e-17 | COBE | DIRBE | DIRBE 100 micron filter | | COBE/DIRBE.140m | 1.49e+6 | 1.55e+6 | 1.42e+6 | 998090.00 | 2.64e+6 | 414260.47 | 0.169 | 2.51e-18 | COBE | DIRBE | DIRBE 140 micron filter | | COBE/DIRBE.240m | 2.51e+6 | 2.62e+6 | 2.35e+6 | 1.63e+6 | 4.52e+6 | 977552.70 | 0.0584 | 3.16e-19 | COBE | DIRBE | DIRBE 240 micron filter |
|
| 
 ≡ 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=48994.451155728&id=COBE/DIRBE.4p9m><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 (photon counter)<br> Vg(λ) ≡ Vega spectrum<p><img src=showgraph.php?what=leff&val=48668.693780633&id=COBE/DIRBE.4p9m><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=48867.458124535&id=COBE/DIRBE.4p9m><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 (photon counter)<br> Vg(λ) ≡ Vega spectrum<p><img src=showgraph.php?what=lphot&val=48753.623468321&id=COBE/DIRBE.4p9m><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=6632.3299446285,49017.625,1&id=COBE/DIRBE.4p9m><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 (photon counter).<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 (photon counter).<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}
