AKARI :AKARI (Previously known as ASTRO-F or IRIS - InfraRed Imaging Surveyor) is the second space mission for infrared astronomy in Japan. AKARI/IRC :AKARI Infrared Camera |
| AKARI/IRC.N2 | 23550.40 | 24106.08 | 22684.35 | 16799.51 | 29496.94 | 6973.78 | 559.84 | 3.26e-11 | AKARI | IRC | IRC NIR N2 | | AKARI/IRC.N2 | Filter Description | Filter ID (?) : | AKARI/IRC.N2 |
| Description (?) : | IRC NIR N2 |
| Phot.System (?) : | IRC |
| Detector Type (?) : | Energy counter |
| Band Name (?) : | ------ |
| Obs. Facility (?) : | AKARI |
| Instrument (?) : | IRC |
| Comments (?) : | ------ |
| | Mathematical properties | Property | Calculated | Specified | Unit | | λref (?) : |
23550.40 | ------- | (Angstrom) |
| λmean (?) : |
24106.08 | ------- | (Angstrom) |
| λcen (?) : |
24048.79 | ------- | (Angstrom) |
| λeff (?) : |
22684.35 | ------- | (Angstrom) |
| λpeak (?) : |
27708.00 | ------- | (Angstrom) |
| λpivot (?) : |
23550.40 | ------- | (Angstrom) |
| λphot (?) : |
23076.85 | ------- | (Angstrom) |
| λmin (?) : |
16799.51 | ------- | (Angstrom) |
| λmax (?) : |
29496.94 | ------- | (Angstrom) |
| Weff (?) : |
6973.78 | ------- | (Angstrom) |
| FWHM (?) : |
8468.68 | ------- | (Angstrom) |
| Af/AV (?) : |
0.118 | ------- | () |
| Fsun (?) : |
6.66 | ------- | (erg/cm2/s/A) |
| Transmission
Data file: ascii, VOTable Reference for filter response:
AKARI Transmission components: Filter + Instrument | | Calibration properties
Vega System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.26163e-11 | (erg/cm2/s/A) |
| |
------- |
559.84 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
AKARI/IRC.N2/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
2.11541e-10 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
AKARI/IRC.N2/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
62324.39 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
AKARI/IRC.N2/ST |
| |
|
Filter added: 2011-10-17 23:51:16
Last update: 2020-12-10 16:28:00 | | AKARI/IRC.N3 | 32178.85 | 32761.32 | 31302.69 | 25370.24 | 39869.70 | 8605.42 | 325.50 | 9.96e-12 | AKARI | IRC | IRC NIR N3 | | AKARI/IRC.N4 | 43830.13 | 44703.98 | 42505.24 | 33990.71 | 57514.48 | 15278.93 | 184.40 | 3.06e-12 | AKARI | IRC | IRC NIR N4 | | AKARI/IRC.S7 | 71763.54 | 73059.08 | 69538.96 | 55235.69 | 87425.96 | 17325.83 | 72.54 | 4.5e-13 | AKARI | IRC | IRC MIR-S S7 | | AKARI/IRC.S9W | 88508.48 | 92181.96 | 82283.55 | 58460.61 | 121879.82 | 41027.11 | 47.51 | 2.1e-13 | AKARI | IRC | IRC MIR-S S9W | | AKARI/IRC.S11 | 106378.80 | 109489.15 | 101932.12 | 82698.24 | 152992.79 | 41042.64 | 33.73 | 9.73e-14 | AKARI | IRC | IRC MIR-S S11 | | AKARI/IRC.L15 | 158029.99 | 161620.41 | 152310.49 | 122114.20 | 214681.41 | 59787.65 | 15.54 | 2.01e-14 | AKARI | IRC | IRC MIR-L L15 | | AKARI/IRC.L18W | 189217.99 | 198065.72 | 176094.90 | 136082.25 | 286690.68 | 99690.07 | 10.73 | 1.04e-14 | AKARI | IRC | IRC MIR-L L18W | | AKARI/IRC.L24 | 231201.06 | 233524.36 | 227526.39 | 184025.14 | 287036.54 | 53337.79 | 7.36 | 4.26e-15 | AKARI | IRC | IRC MIR-L L24 |
|
| 
 ≡ 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=24106.076438&id=AKARI/IRC.N2><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=22684.3451753&id=AKARI/IRC.N2><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=23550.396790031&id=AKARI/IRC.N2><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=23076.8498092&id=AKARI/IRC.N2><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=6973.77724541,24048.790855,1&id=AKARI/IRC.N2><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}
