| Paranal/OmegaCAM.u_CAL_filter | 3497.13 | 3510.26 | 3520.83 | 3149.18 | 3890.26 | 562.03 | 1389.02 | 3.4e-9 | Paranal | OmegaCAM | VST, OmegaCAM u_SDSS calibration filter. Central transmission. (filter only) |
| Paranal/OmegaCAM.u_CAL | 3508.45 | 3521.54 | 3533.19 | 3149.56 | 3891.27 | 553.14 | 1403.57 | 3.42e-9 | Paranal | OmegaCAM | VST, OmegaCAM u_SDSS calibration filter. Central transmission. (filter+CCD) |
| Paranal/OmegaCAM.u_SDSS_filter | 3559.06 | 3571.22 | 3593.80 | 3206.34 | 3996.89 | 502.31 | 1506.23 | 3.56e-9 | Paranal | OmegaCAM | VST, OmegaCAM u_SDSS filter. Central transmission. (filter only) |
| Paranal/OmegaCAM.u_SDSS | 3569.62 | 3581.69 | 3605.56 | 3207.44 | 4002.94 | 482.52 | 1527.90 | 3.59e-9 | Paranal | OmegaCAM | VST, OmegaCAM u_SDSS_ filter. Central transmission. (filter+CCD) |
| Paranal/OmegaCAM.v_strom_filter | 4141.71 | 4143.59 | 4143.34 | 3957.13 | 4361.64 | 211.86 | 4311.21 | 7.53e-9 | Paranal | OmegaCAM | VST, OmegaCAM v_strom filter. Central transmission. (filter only) |
| Paranal/OmegaCAM.v_strom | 4143.04 | 4144.92 | 4144.72 | 3958.77 | 4361.66 | 207.64 | 4313.95 | 7.53e-9 | Paranal | OmegaCAM | VST, OmegaCAM v_strom filter. Central transmission. (filter+CCD) |
| Paranal/OmegaCAM.B_aux_filter | 4391.49 | 4423.26 | 4381.75 | 3763.22 | 4997.98 | 851.92 | 4053.60 | 6.3e-9 | Paranal | OmegaCAM | VST, OmegaCAM B filter for auxiliary ccd. (filter only) |
| Paranal/OmegaCAM.B_qB_filter | 4392.47 | 4424.65 | 4380.32 | 3780.01 | 5006.90 | 886.29 | 4061.59 | 6.31e-9 | Paranal | OmegaCAM | VST, OmegaCAM B filter. quadrant B. (filter only) |
| Paranal/OmegaCAM.B_qA_filter | 4392.91 | 4425.19 | 4380.70 | 3780.06 | 5008.52 | 889.26 | 4061.43 | 6.31e-9 | Paranal | OmegaCAM | VST, OmegaCAM B filter. quadrant A. (filter only) |
| Paranal/OmegaCAM.B_qD_filter | 4392.99 | 4425.24 | 4380.77 | 3780.24 | 5008.25 | 888.42 | 4061.40 | 6.31e-9 | Paranal | OmegaCAM | VST, OmegaCAM B filter. quadrant D. (filter only) |
| Paranal/OmegaCAM.B_filter | 4397.79 | 4429.33 | 4384.58 | 3782.16 | 5006.84 | 874.48 | 4070.07 | 6.31e-9 | Paranal | OmegaCAM | VST, OmegaCAM B filter. Average of central transmission in the four quadrants. (filter only) |
| Paranal/OmegaCAM.B_aux | 4398.67 | 4429.70 | 4388.37 | 3765.66 | 4997.73 | 842.41 | 4060.49 | 6.29e-9 | Paranal | OmegaCAM | VST, OmegaCAM B filter for auxiliary ccd. (filter+ccd) |
| Paranal/OmegaCAM.B_qB | 4399.44 | 4430.92 | 4386.88 | 3780.88 | 5006.74 | 877.62 | 4067.10 | 6.3e-9 | Paranal | OmegaCAM | VST, OmegaCAM B filter. quadrant B. (filter+CCD) |
| Paranal/OmegaCAM.B_qA | 4399.90 | 4431.49 | 4387.28 | 3780.94 | 5008.37 | 880.57 | 4066.91 | 6.3e-9 | Paranal | OmegaCAM | VST, OmegaCAM B filter. quadrant A. (filter+CCD) |
| Paranal/OmegaCAM.B_qD | 4399.93 | 4431.49 | 4387.31 | 3781.11 | 5008.09 | 879.71 | 4066.88 | 6.3e-9 | Paranal | OmegaCAM | VST, OmegaCAM B filter. quadrant D. (filter+CCD) |
| Paranal/OmegaCAM.B | 4404.34 | 4435.21 | 4390.80 | 3783.30 | 5006.69 | 866.55 | 4074.77 | 6.3e-9 | Paranal | OmegaCAM | VST, OmegaCAM B filter. Average of central transmission in the four quadrants. (filter+CCD) |
| Paranal/OmegaCAM.B_qC_filter | 4414.19 | 4443.31 | 4397.56 | 3827.57 | 5002.82 | 832.99 | 4098.46 | 6.31e-9 | Paranal | OmegaCAM | VST, OmegaCAM B filter. quadrant C. (filter only) |
| Paranal/OmegaCAM.B_qC | 4419.38 | 4447.98 | 4402.71 | 3829.96 | 5002.64 | 827.49 | 4100.41 | 6.29e-9 | Paranal | OmegaCAM | VST, OmegaCAM B filter. quadrant C. (filter+CCD) |
| Paranal/OmegaCAM.v_strom_aux_filter | 4582.41 | 4633.67 | 4553.59 | 3826.79 | 5402.41 | 1221.76 | 4044.45 | 5.77e-9 | Paranal | OmegaCAM | VST, OmegaCAM v_strom filter for auxiliary ccd. Central transmission. (filter only) |
| Paranal/OmegaCAM.v_strom_aux | 4585.50 | 4635.82 | 4556.79 | 3830.07 | 5401.17 | 1222.12 | 4046.63 | 5.77e-9 | Paranal | OmegaCAM | VST, OmegaCAM v_strom filter for auxiliary ccd. Central transmission. (filter+CCD) |
| Paranal/OmegaCAM.g_SDSS | 4711.99 | 4760.03 | 4678.69 | 3912.71 | 5572.93 | 1203.25 | 4018.45 | 5.43e-9 | Paranal | OmegaCAM | VST, OmegaCAM g_SDSS_ filter. Central transmission. (filter+CCD) |
| Paranal/OmegaCAM.g_SDSS_filter | 4714.10 | 4762.64 | 4680.55 | 3910.73 | 5574.51 | 1191.70 | 4016.48 | 5.42e-9 | Paranal | OmegaCAM | VST, OmegaCAM g_SDSS filter. Central transmission. (filter only) |
| Paranal/OmegaCAM.g_CAL | 4770.13 | 4816.75 | 4734.74 | 4048.60 | 5526.71 | 1164.93 | 4006.23 | 5.28e-9 | Paranal | OmegaCAM | VST, OmegaCAM g_SDSS calibration filter. Central transmission. (filter+CCD) |
| Paranal/OmegaCAM.g_CAL_filter | 4774.00 | 4820.90 | 4738.44 | 4048.55 | 5527.07 | 1137.11 | 4003.65 | 5.27e-9 | Paranal | OmegaCAM | VST, OmegaCAM g_SDSS calibration filter. Central transmission. (filter only) |
| Paranal/OmegaCAM.V_qC | 5500.18 | 5523.01 | 5477.48 | 4924.92 | 6109.08 | 919.98 | 3617.40 | 3.58e-9 | Paranal | OmegaCAM | VST, OmegaCAM V filter. quadrant C. (filter+CCD) |
| Paranal/OmegaCAM.V_qB | 5501.67 | 5524.47 | 5479.00 | 4925.96 | 6110.27 | 919.85 | 3616.39 | 3.58e-9 | Paranal | OmegaCAM | VST, OmegaCAM V filter. quadrant B. (filter+CCD) |
| Paranal/OmegaCAM.V | 5505.16 | 5527.36 | 5483.06 | 4928.38 | 6101.64 | 908.09 | 3613.72 | 3.57e-9 | Paranal | OmegaCAM | VST, OmegaCAM V filter. Average of central transmission in the four quadrants. (filter+CCD) |
| Paranal/OmegaCAM.V_qC_filter | 5505.84 | 5528.64 | 5483.12 | 4925.78 | 6109.30 | 896.02 | 3613.71 | 3.57e-9 | Paranal | OmegaCAM | VST, OmegaCAM V filter. quadrant C. (filter only) |
| Paranal/OmegaCAM.V_qB_filter | 5507.31 | 5530.09 | 5484.63 | 4926.93 | 6110.48 | 895.97 | 3612.71 | 3.57e-9 | Paranal | OmegaCAM | VST, OmegaCAM V filter. quadrant B. (filter only) |
| Paranal/OmegaCAM.V_qA | 5508.73 | 5530.26 | 5487.29 | 4933.85 | 6088.12 | 884.17 | 3610.95 | 3.57e-9 | Paranal | OmegaCAM | VST, OmegaCAM V filter. quadrant A. (filter+CCD) |
| Paranal/OmegaCAM.V_qD | 5510.49 | 5532.06 | 5489.01 | 4935.04 | 6089.83 | 886.00 | 3609.82 | 3.56e-9 | Paranal | OmegaCAM | VST, OmegaCAM V filter. quadrant D. (filter+CCD) |
| Paranal/OmegaCAM.V_filter | 5510.67 | 5532.85 | 5488.57 | 4929.56 | 6101.92 | 884.70 | 3610.13 | 3.56e-9 | Paranal | OmegaCAM | VST, OmegaCAM V filter. Average of central transmission in the four quadrants. (filter only) |
| Paranal/OmegaCAM.V_qA_filter | 5514.11 | 5535.60 | 5492.67 | 4935.44 | 6088.29 | 864.72 | 3607.46 | 3.56e-9 | Paranal | OmegaCAM | VST, OmegaCAM V filter. quadrant A. (filter only) |
| Paranal/OmegaCAM.V_qD_filter | 5515.88 | 5537.41 | 5494.40 | 4936.70 | 6090.00 | 866.56 | 3606.32 | 3.55e-9 | Paranal | OmegaCAM | VST, OmegaCAM V filter. quadrant D. (filter only) |
| Paranal/OmegaCAM.V_aux | 5516.82 | 5538.99 | 5494.73 | 4934.81 | 6109.13 | 888.38 | 3606.03 | 3.55e-9 | Paranal | OmegaCAM | VST, OmegaCAM V filter for auxiliary ccd. (filter+ccd) |
| Paranal/OmegaCAM.V_aux_filter | 5522.33 | 5544.45 | 5500.25 | 4936.42 | 6109.40 | 868.85 | 3602.45 | 3.54e-9 | Paranal | OmegaCAM | VST, OmegaCAM V filter for auxiliary ccd. (filter only) |
| Paranal/OmegaCAM.r_CAL | 6212.03 | 6255.44 | 6163.64 | 5408.53 | 7070.47 | 1410.57 | 3173.11 | 2.47e-9 | Paranal | OmegaCAM | VST, OmegaCAM r_SDSS calibration filter. Central transmission. (filter+CCD) |
| Paranal/OmegaCAM.r_CAL_filter | 6226.23 | 6269.87 | 6177.47 | 5411.32 | 7072.14 | 1336.93 | 3164.94 | 2.45e-9 | Paranal | OmegaCAM | VST, OmegaCAM r_SDSS calibration filter. Central transmission. (filter only) |
| Paranal/OmegaCAM.Halpha_aux | 6246.33 | 6289.45 | 6198.28 | 5367.16 | 7190.38 | 1320.67 | 3152.17 | 2.42e-9 | Paranal | OmegaCAM | VST, OmegaCAM Halpha filter for auxiliary ccd. Central transmission. (filter+CCD) |
| Paranal/OmegaCAM.Halpha_aux_filter | 6261.36 | 6304.83 | 6212.86 | 5370.72 | 7194.05 | 1292.60 | 3143.72 | 2.4e-9 | Paranal | OmegaCAM | VST, OmegaCAM Halpha filter for auxiliary ccd. Central transmission. (filter only) |
| Paranal/OmegaCAM.r_SDSS | 6285.95 | 6326.02 | 6241.29 | 5405.42 | 7244.73 | 1313.41 | 3129.74 | 2.37e-9 | Paranal | OmegaCAM | VST, OmegaCAM r_SDSS_ filter. Central transmission. (filter+CCD) |
| Paranal/OmegaCAM.r_SDSS_filter | 6300.30 | 6340.69 | 6255.26 | 5411.08 | 7247.44 | 1250.03 | 3121.80 | 2.36e-9 | Paranal | OmegaCAM | VST, OmegaCAM r_SDSS filter. Central transmission. (filter only) |
| Paranal/OmegaCAM.Halpha-D | 6587.69 | 6587.99 | 6589.64 | 6481.93 | 6698.15 | 108.82 | 2668.55 | 1.84e-9 | Paranal | OmegaCAM | VST, OmegaCAM Halpha filter. Quadrant D. Redshift z=0.03. Central transmission. (filter+CCD) |
| Paranal/OmegaCAM.Halpha-D_filter | 6587.80 | 6588.10 | 6589.75 | 6482.09 | 6698.31 | 108.58 | 2669.03 | 1.84e-9 | Paranal | OmegaCAM | VST, OmegaCAM Halpha filter. Quadrant D. Redshift z=0. Central transmission. (filter only) |
| Paranal/OmegaCAM.Halpha | 6588.58 | 6588.84 | 6590.63 | 6492.97 | 6683.12 | 103.76 | 2660.09 | 1.84e-9 | Paranal | OmegaCAM | OmegaCAM Halpha filter for VPHAS+ |
| Paranal/OmegaCAM.Halpha-C | 6655.68 | 6655.99 | 6655.96 | 6548.28 | 6771.41 | 113.05 | 2909.47 | 1.97e-9 | Paranal | OmegaCAM | VST, OmegaCAM Halpha filter. Quadrant C. Redshift z=0.02. Central transmission. (filter+CCD) |
| Paranal/OmegaCAM.Halpha-C_filter | 6655.80 | 6656.12 | 6656.09 | 6548.44 | 6771.79 | 112.99 | 2909.57 | 1.97e-9 | Paranal | OmegaCAM | VST, OmegaCAM Halpha filter. Quadrant C. Redshift z=0. Central transmission. (filter only) |
| Paranal/OmegaCAM.Halpha-B | 6721.00 | 6721.35 | 6720.70 | 6608.61 | 6840.87 | 115.25 | 2913.06 | 1.93e-9 | Paranal | OmegaCAM | VST, OmegaCAM Halpha filter. Quadrant B. Redshift z=0.01. Central transmission. (filter+CCD) |
| Paranal/OmegaCAM.Halpha-B_filter | 6721.26 | 6721.61 | 6720.96 | 6608.74 | 6841.32 | 115.95 | 2912.97 | 1.93e-9 | Paranal | OmegaCAM | VST, OmegaCAM Halpha filter. Quadrant B. Redshift z=0. Central transmission. (filter only) |
| Paranal/OmegaCAM.Halpha-A | 6789.09 | 6789.43 | 6788.75 | 6674.55 | 6909.93 | 118.53 | 2886.72 | 1.88e-9 | Paranal | OmegaCAM | VST, OmegaCAM Halpha filter. Quadrant A. Redshift z=0. Central transmission. (filter+CCD) |
| Paranal/OmegaCAM.Halpha-A | Filter Description | Filter ID (?) : | Paranal/OmegaCAM.Halpha-A |
| Description (?) : | VST, OmegaCAM Halpha filter. Quadrant A. Redshift z=0. Central transmission. (filter+CCD) |
| Phot.System (?) : | OmegaCAM |
| Detector Type (?) : | Photon counter |
| Band Name (?) : | Halpha |
| Obs. Facility (?) : | Paranal |
| Instrument (?) : | OmegaCAM |
| Comments (?) : | Includes CCD response. |
| | Mathematical properties | Property | Calculated | Specified | Unit | | λref (?) : |
6789.09 | ------- | (Angstrom) |
| λmean (?) : |
6789.43 | ------- | (Angstrom) |
| λcen (?) : |
6789.26 | ------- | (Angstrom) |
| λeff (?) : |
6788.75 | ------- | (Angstrom) |
| λpeak (?) : |
6756.70 | ------- | (Angstrom) |
| λpivot (?) : |
6789.09 | ------- | (Angstrom) |
| λphot (?) : |
6788.98 | ------- | (Angstrom) |
| λmin (?) : |
6674.55 | ------- | (Angstrom) |
| λmax (?) : |
6909.93 | ------- | (Angstrom) |
| Weff (?) : |
118.53 | ------- | (Angstrom) |
| FWHM (?) : |
116.09 | ------- | (Angstrom) |
| Af/AV (?) : |
0.766 | ------- | () |
| Fsun (?) : |
150.09 | ------- | (erg/cm2/s/A) |
| Transmission
Data file: ascii, VOTable Reference for filter response:
ESO: OmegaCAM Transmission components: Filter + Instrumentid:Paranal/OmegaCAM.Halpha-A
You can download here the GaiaXPy base XML file for the full Paranal/OmegaCAM 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 (?) : |
------- |
1.8776e-9 | (erg/cm2/s/A) |
| |
------- |
2886.72 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Paranal/OmegaCAM.Halpha-A/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
2.3617e-9 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Paranal/OmegaCAM.Halpha-A/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
5582.49 | (Jy) |
| ZP Type (?) : |
Pogson |
| PhotCal ID (?) : |
Paranal/OmegaCAM.Halpha-A/ST |
| |
|
Filter added: 2013-09-14 16:32:11
Last update: 2021-07-27 20:28:59 |
| Paranal/OmegaCAM.Halpha-A_filter | 6789.40 | 6789.74 | 6789.06 | 6674.81 | 6910.42 | 119.30 | 2886.59 | 1.88e-9 | Paranal | OmegaCAM | VST, OmegaCAM Halpha filter. Quadrant A. Redshift z=0. Central transmission. (filter only) |
| Paranal/OmegaCAM.i_SDSS | 7555.08 | 7598.48 | 7507.73 | 6580.08 | 8741.45 | 1463.68 | 2572.28 | 1.35e-9 | Paranal | OmegaCAM | VST, OmegaCAM i_SDSS_ filter. Central transmission. (filter+CCD) |
| Paranal/OmegaCAM.i_CAL | 7595.54 | 7635.04 | 7552.46 | 6778.50 | 8585.38 | 1387.07 | 2555.05 | 1.33e-9 | Paranal | OmegaCAM | VST, OmegaCAM i_SDSS calibration filter. Central transmission. (filter+CCD) |
| Paranal/OmegaCAM.i_SDSS_filter | 7629.98 | 7674.02 | 7581.19 | 6602.89 | 8802.01 | 1439.22 | 2543.51 | 1.31e-9 | Paranal | OmegaCAM | VST, OmegaCAM i_SDSS filter. Central transmission. (filter only) |
| Paranal/OmegaCAM.i_CAL_filter | 7671.28 | 7712.02 | 7626.15 | 6783.66 | 8605.15 | 1471.97 | 2526.38 | 1.29e-9 | Paranal | OmegaCAM | VST, OmegaCAM i_SDSS calibration filter. Central transmission. (filter only) |
| Paranal/OmegaCAM.z_SDSS | 8888.56 | 8907.92 | 8881.62 | 8185.58 | 9875.16 | 864.48 | 2248.50 | 8.53e-10 | Paranal | OmegaCAM | VST, OmegaCAM z_SDSS_ filter. Central transmission. (filter+CCD) |
| Paranal/OmegaCAM.z_SDSS_filter | 9036.64 | 9060.03 | 9026.29 | 8197.85 | 10043.09 | 1185.23 | 2243.17 | 8.24e-10 | Paranal | OmegaCAM | VST, OmegaCAM z_SDSS filter. Central transmission. (filter only) |
 ≡ 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=6789.4313695386&id=Paranal/OmegaCAM.Halpha-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><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=6788.7488569552&id=Paranal/OmegaCAM.Halpha-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><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=6789.085357104&id=Paranal/OmegaCAM.Halpha-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><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=6788.9795465721&id=Paranal/OmegaCAM.Halpha-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><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=118.52837519344,6789.2599795312,1&id=Paranal/OmegaCAM.Halpha-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><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}
