Gemini :Gemini Observatory Gemini/GNIRS :GNIRS is a multi-function spectrograph, covering a spectral range of 0.8−5.4 μm and providing a variety of low, medium, and high resolution modes sampled by four different camera options. It can be used with the ALTAIR AO system. GNIRS has some limited imaging capabilities.id:Gemini/GNIRS.a |
| Gemini/GNIRS.Y | 10210.32 | 10226.45 | 10191.07 | 9449.04 | 11149.95 | 1060.30 | 2067.23 | 5.94e-10 | Gemini | GNIRS | GNIRS Y filter | | Gemini/GNIRS.X | 11030.78 | 11058.98 | 10993.88 | 10030.90 | 12201.35 | 1410.87 | 1853.85 | 4.57e-10 | Gemini | GNIRS | GNIRS X filter | | Gemini/GNIRS.J-MK | 12556.21 | 12583.49 | 12516.77 | 11543.33 | 13578.54 | 1502.02 | 1525.19 | 2.9e-10 | Gemini | GNIRS | GNIRS J-MK filter | | Gemini/GNIRS.J | 12804.01 | 12845.15 | 12746.62 | 11482.07 | 14092.61 | 1660.87 | 1483.61 | 2.71e-10 | Gemini | GNIRS | GNIRS J filter | | Gemini/GNIRS.H | 16459.03 | 16546.21 | 16344.77 | 14531.62 | 18761.71 | 2974.12 | 1014.43 | 1.12e-10 | Gemini | GNIRS | GNIRS H filter | | Gemini/GNIRS.H2 | 21205.82 | 21206.62 | 21204.56 | 20902.19 | 21509.70 | 319.64 | 675.31 | 4.5e-11 | Gemini | GNIRS | GNIRS H2 filter | | Gemini/GNIRS.H2 | Filter Description | Filter ID (?) : | Gemini/GNIRS.H2 |
| Description (?) : | GNIRS H2 filter |
| Phot.System (?) : | GNIRS |
| Detector Type (?) : | Photon counter |
| Band Name (?) : | ------ |
| Obs. Facility (?) : | Gemini |
| Instrument (?) : | GNIRS |
| Comments (?) : | scaled to transmittance of the XD filter in the relevant wavelength interval
|
| | Mathematical properties | Property | Calculated | Specified | Unit | | λref (?) : |
21205.82 | ------- | (Angstrom) |
| λmean (?) : |
21206.62 | ------- | (Angstrom) |
| λcen (?) : |
21207.15 | ------- | (Angstrom) |
| λeff (?) : |
21204.56 | ------- | (Angstrom) |
| λpeak (?) : |
21180.00 | ------- | (Angstrom) |
| λpivot (?) : |
21205.82 | ------- | (Angstrom) |
| λphot (?) : |
21205.09 | ------- | (Angstrom) |
| λmin (?) : |
20902.19 | ------- | (Angstrom) |
| λmax (?) : |
21509.70 | ------- | (Angstrom) |
| Weff (?) : |
319.64 | ------- | (Angstrom) |
| FWHM (?) : |
314.57 | ------- | (Angstrom) |
| Af/AV (?) : |
0.128 | ------- | () |
| Fsun (?) : |
9.38 | ------- | (erg/cm2/s/A) |
| Transmission
Data file: ascii, VOTable Reference for filter response:
GNIRS Transmission components: Filterid:Gemini/GNIRS.H2 | | Calibration properties
Vega System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
4.50207e-11 | (erg/cm2/s/A) |
| |
------- |
675.31 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Gemini/GNIRS.H2/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
2.42068e-10 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Gemini/GNIRS.H2/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
54464.78 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Gemini/GNIRS.H2/ST |
| |
|
Filter added: 2021-01-06 21:20:43
Last update: 2021-07-27 19:13:07 | | Gemini/GNIRS.K-MK | 22045.84 | 22113.70 | 21944.98 | 19946.54 | 24143.60 | 3099.13 | 632.88 | 3.9e-11 | Gemini | GNIRS | GNIRS K-MK filter | | Gemini/GNIRS.K | 22024.56 | 22211.48 | 21751.15 | 18693.43 | 25600.00 | 5216.49 | 640.53 | 3.96e-11 | Gemini | GNIRS | GNIRS K filter | | Gemini/GNIRS.XD | 21964.08 | 27877.30 | 14732.46 | 8167.00 | 50000.00 | 21657.07 | 1048.13 | 6.51e-11 | Gemini | GNIRS | GNIRS XD filter | | Gemini/GNIRS.PAH | 32935.19 | 32936.67 | 32931.96 | 32425.22 | 33472.70 | 561.76 | 303.24 | 8.38e-12 | Gemini | GNIRS | GNIRS PAH filter | | Gemini/GNIRS.L | 35642.96 | 36445.92 | 34400.28 | 27656.15 | 50000.00 | 12542.66 | 281.73 | 6.65e-12 | Gemini | GNIRS | GNIRS L filter | | Gemini/GNIRS.M | 51459.24 | 52050.08 | 50531.78 | 42212.20 | 60000.00 | 14306.21 | 138.90 | 1.57e-12 | Gemini | GNIRS | GNIRS M filter |
|
| 
 ≡ filter transmission<p><u>Property info:</u><ul><li><b>Unit</b>:Angstrom<li><b>UCD</b>:em.wl</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.bandwidth.extent.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>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>UCD</b>:meta.code<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=21206.617304051&id=Gemini/GNIRS.H2><p>Filter transmission is transformed to "<i>energy counter</i>" for these calculations, that is, the photon count transmission is multiplied by λ and normalized so that peak transmission is equal to 1.<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=leff&val=21204.558798045&id=Gemini/GNIRS.H2><p>Filter transmission is transformed to "<i>energy counter</i>" for these calculations, that is, the photon count transmission is multiplied by λ and normalized so that peak transmission is equal to 1.<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=21205.820741243&id=Gemini/GNIRS.H2><p>Filter transmission is transformed to "<i>energy counter</i>" for these calculations, that is, the photon count transmission is multiplied by λ and normalized so that peak transmission is equal to 1.<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=21205.089877357&id=Gemini/GNIRS.H2><p>Filter transmission is transformed to "<i>energy counter</i>" for these calculations, that is, the photon count transmission is multiplied by λ and normalized so that peak transmission is equal to 1.<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=319.63525056534,21207.150023125,1&id=Gemini/GNIRS.H2><p>Filter transmission is transformed to "<i>energy counter</i>" for these calculations, that is, the photon count transmission is multiplied by λ and normalized so that peak transmission is equal to 1.<p><u>Property info:</u><ul><li><b>Unit</b>:Angstrom<li><b>UCD</b>:instr.bandwidth<li><b>Utype</b>: <i>photdm:PhotometryFilter.bandwidth.extent.value</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/extlaw.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/sun.png"><p><p>Filter transmission is transformed to "<i>energy counter</i>" for these calculations, that is, the photon count transmission is multiplied by λ and normalized so that peak transmission is equal to 1.<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>Filter transmission is transformed to \"<i>energy counter</i>\" for these calculations, that is, the photon count transmission is multiplied by λ and normalized so that peak transmission is equal to 1.<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}
