Gemini :Gemini Observatory Gemini/Alopeke :Fast, low-noise, dual-channel, and dual-plate-scale imager based on the Differential Speckle Survey Instrument. Permanently mounted on the calibration port at Gemini Northid:Gemini/Alopeke.a → GaiaXPy base XML file. You can download here the GaiaXPy base XML file for the full Gemini/Alopeke filter set. Please, take a look to the GaiaXPy web page and additional documentation for more information. |
| Gemini/Alopeke.u_sdss | 3522.55 | 3532.81 | 3545.19 | 3147.03 | 3938.84 | 442.76 | 1401.25 | 3.39e-9 | Gemini | Alopeke | Alopeke XSDSS u filter | | Gemini/Alopeke.EO_466 | 4665.31 | 4670.50 | 4654.00 | 4435.67 | 4907.56 | 436.87 | 4089.20 | 5.63e-9 | Gemini | Alopeke | Alopeke EO_466 filter | | Gemini/Alopeke.g_sdss | 4745.74 | 4806.20 | 4703.11 | 3918.92 | 5638.08 | 1424.05 | 4009.54 | 5.34e-9 | Gemini | Alopeke | Alopeke XSDSS g filter | | Gemini/Alopeke.EO_562 | 5618.71 | 5622.96 | 5614.54 | 5383.71 | 5857.91 | 433.23 | 3531.57 | 3.35e-9 | Gemini | Alopeke | Alopeke EO_562 filter | | Gemini/Alopeke.r_sdss | 6162.85 | 6205.72 | 6114.87 | 5350.89 | 7012.26 | 1396.74 | 3199.40 | 2.53e-9 | Gemini | Alopeke | Alopeke XSDSS r filter | | Gemini/Alopeke.EO_716 | 7155.20 | 7159.90 | 7150.06 | 6872.19 | 7453.15 | 512.00 | 2725.12 | 1.6e-9 | Gemini | Alopeke | Alopeke EO_716 filter | | Gemini/Alopeke.i_sdss | 7604.61 | 7640.95 | 7564.44 | 6732.08 | 8436.13 | 1434.34 | 2550.73 | 1.32e-9 | Gemini | Alopeke | Alopeke XSDSS i filter | | Gemini/Alopeke.i_sdss | Filter Description | Filter ID (?) : | Gemini/Alopeke.i_sdss |
| Description (?) : | Alopeke XSDSS i filter |
| Phot.System (?) : | ------ |
| Detector Type (?) : | Energy counter |
| Band Name (?) : | ------ |
| Obs. Facility (?) : | Gemini |
| Instrument (?) : | Alopeke |
| Comments (?) : | ------ |
| | Mathematical properties | Property | Calculated | Specified | Unit | | λref (?) : |
7604.61 | ------- | (Angstrom) |
| λmean (?) : |
7640.95 | ------- | (Angstrom) |
| λcen (?) : |
7650.92 | ------- | (Angstrom) |
| λeff (?) : |
7564.44 | ------- | (Angstrom) |
| λpeak (?) : |
7830.00 | ------- | (Angstrom) |
| λpivot (?) : |
7604.61 | ------- | (Angstrom) |
| λphot (?) : |
7588.51 | ------- | (Angstrom) |
| λmin (?) : |
6732.08 | ------- | (Angstrom) |
| λmax (?) : |
8436.13 | ------- | (Angstrom) |
| Weff (?) : |
1434.34 | ------- | (Angstrom) |
| FWHM (?) : |
1476.23 | ------- | (Angstrom) |
| Af/AV (?) : |
0.656 | ------- | () |
| Fsun (?) : |
123.59 | ------- | (erg/cm2/s/A) |
| Transmission
Data file: ascii, VOTable Reference for filter response:
Gemini Alopeke Transmission components: Filterid:Gemini/Alopeke.i_sdss
You can download here the GaiaXPy base XML file for the full Gemini/Alopeke filter set.
Please, take a look to GaiaXPy documentation for more information. - GaiaXPy base XML file. | | Calibration properties
Vega System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
1.3223e-9 | (erg/cm2/s/A) |
| |
------- |
2550.73 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Gemini/Alopeke.i_sdss/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
1.88232e-9 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Gemini/Alopeke.i_sdss/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
7004.21 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Gemini/Alopeke.i_sdss/ST |
| |
|
Filter added: 2018-12-14 17:14:51
Last update: 2021-07-27 19:12:20 | | Gemini/Alopeke.EO_832 | 8317.70 | 8320.18 | 8314.98 | 8098.82 | 8543.09 | 404.56 | 2283.69 | 9.9e-10 | Gemini | Alopeke | Alopeke EO_832 filter | | Gemini/Alopeke.z_sdss | 9389.42 | 9462.45 | 9340.30 | 8228.85 | 10747.00 | 2267.25 | 2188.26 | 7.44e-10 | Gemini | Alopeke | Alopeke XSDSS z 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=7640.9456175641&id=Gemini/Alopeke.i_sdss><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=7564.4401460444&id=Gemini/Alopeke.i_sdss><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=7604.6086133326&id=Gemini/Alopeke.i_sdss><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=7588.5097454624&id=Gemini/Alopeke.i_sdss><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=1434.3382662787,7650.9222253495,0.89&id=Gemini/Alopeke.i_sdss><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><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}
