| HST/ACS_HRC.F220W | 2254.44 | 2279.81 | 2254.84 | 1855.55 | 3031.50 | 479.58 | 788.94 | 4.65e-9 | HST | ACS | F220W filter for HST ACS_HRC |
| HST/ACS_HRC.F250W | 2716.13 | 2749.94 | 2739.38 | 2110.53 | 3586.86 | 593.95 | 931.99 | 3.79e-9 | HST | ACS | F250W filter for HST ACS_HRC |
| HST/ACS_HRC.F250W | Filter Description | Filter ID (?) : | HST/ACS_HRC.F250W |
| Description (?) : | F250W filter for HST ACS_HRC |
| Phot.System (?) : | ACS-HRC |
| Detector Type (?) : | Photon counter |
| Band Name (?) : | ------ |
| Obs. Facility (?) : | HST |
| Instrument (?) : | ACS |
| Comments (?) : | Response calculated using the stsynphot python package by STScI. In particular, function stsynphot.band("acs,hrc,f250w"). Please, take a look to stsynphot documentation and HST instrument documentation |
| | Mathematical properties | Property | Calculated | Specified | Unit | | λref (?) : |
2716.13 | ------- | (Angstrom) |
| λmean (?) : |
2749.94 | ------- | (Angstrom) |
| λcen (?) : |
2721.57 | ------- | (Angstrom) |
| λeff (?) : |
2739.38 | ------- | (Angstrom) |
| λpeak (?) : |
2539.83 | ------- | (Angstrom) |
| λpivot (?) : |
2716.13 | ------- | (Angstrom) |
| λphot (?) : |
2763.74 | ------- | (Angstrom) |
| λmin (?) : |
2110.53 | ------- | (Angstrom) |
| λmax (?) : |
3586.86 | ------- | (Angstrom) |
| Weff (?) : |
593.95 | ------- | (Angstrom) |
| FWHM (?) : |
601.82 | ------- | (Angstrom) |
| Af/AV (?) : |
2.02 | ------- | () |
| Fsun (?) : |
28.73 | ------- | (erg/cm2/s/A) |
| Transmission
Data file: ascii, VOTable Reference for filter response:
stsynphot documentation Transmission components: Filter + CCD + Instrumentid:HST/ACS_HRC.F250W
You can download here the GaiaXPy base XML file for the full HST/ACS_HRC 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 (?) : |
------- |
3.78729e-9 | (erg/cm2/s/A) |
| |
------- |
931.99 | (Jy) |
| PhotCal ID (?) : |
HST/ACS_HRC.F250W/Vega |
| |
AB System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
1.47552e-8 | (erg/cm2/s/A) |
| |
------- |
3631.00 | (Jy) |
| PhotCal ID (?) : |
HST/ACS_HRC.F250W/AB |
| |
ST System | Property | Specified | Calculated | Unit | | Zero Point (?) : |
------- |
3.631e-9 | (erg/cm2/s/A) |
| |
------- |
893.53 | (Jy) |
| PhotCal ID (?) : |
HST/ACS_HRC.F250W/ST |
| |
|
Filter added: 2019-07-16 12:11:26
Last update: 2022-03-01 15:04:22 |
| HST/ACS_HRC.F330W | 3362.99 | 3376.31 | 3368.23 | 2959.86 | 3720.13 | 529.06 | 1245.77 | 3.3e-9 | HST | ACS | F330W filter for HST ACS_HRC |
| HST/ACS_HRC.F344N | 3433.90 | 3434.05 | 3433.95 | 3391.27 | 3479.79 | 59.16 | 1282.17 | 3.26e-9 | HST | ACS | F344N filter for HST ACS_HRC |
| HST/ACS_HRC.FR388N | 3880.26 | 3880.54 | 3881.55 | 3810.58 | 3950.45 | 78.57 | 3400.90 | 6.77e-9 | HST | ACS | FR388N ramp filter for HST ACS_HRC at central wavelength |
| HST/ACS_HRC.F435W | 4323.09 | 4356.59 | 4341.36 | 3599.27 | 4883.81 | 776.58 | 3980.46 | 6.39e-9 | HST | ACS | F435W filter for HST ACS_HRC |
| HST/ACS_HRC.FR459M | 4592.74 | 4597.28 | 4589.45 | 4284.19 | 4909.87 | 346.58 | 4263.58 | 6.06e-9 | HST | ACS | FR459M ramp filter for HST ACS_HRC at central wavelength |
| HST/ACS_HRC.F475W | 4775.73 | 4829.57 | 4738.24 | 3862.71 | 5561.85 | 1186.34 | 3989.30 | 5.24e-9 | HST | ACS | F475W filter for HST ACS_HRC |
| HST/ACS_HRC.F502N | 5023.03 | 5023.14 | 5022.93 | 4966.57 | 5079.85 | 56.68 | 3942.88 | 4.68e-9 | HST | ACS | F502N filter for HST ACS_HRC |
| HST/ACS_HRC.FR505N | 5050.05 | 5050.42 | 5049.75 | 4955.71 | 5145.25 | 107.82 | 3924.92 | 4.61e-9 | HST | ACS | FR505N ramp filter for HST ACS_HRC at central wavelength |
| HST/ACS_HRC.F555W | 5355.74 | 5391.83 | 5326.96 | 4586.66 | 6204.82 | 1101.89 | 3665.22 | 3.83e-9 | HST | ACS | F555W filter for HST ACS_HRC |
| HST/ACS_HRC.F550M | 5579.69 | 5586.53 | 5573.04 | 5247.82 | 5930.69 | 526.53 | 3555.75 | 3.42e-9 | HST | ACS | F550M filter for HST ACS_HRC |
| HST/ACS_HRC.F606W | 5887.08 | 6000.37 | 5776.43 | 4632.15 | 7179.43 | 1871.31 | 3370.53 | 2.92e-9 | HST | ACS | F606W filter for HST ACS_HRC |
| HST/ACS_HRC.F625W | 6295.19 | 6336.04 | 6249.39 | 5444.21 | 7099.05 | 1273.79 | 3123.53 | 2.36e-9 | HST | ACS | F625W filter for HST ACS_HRC |
| HST/ACS_HRC.FR656N | 6559.82 | 6560.25 | 6558.96 | 6445.51 | 6675.00 | 130.90 | 2705.02 | 1.88e-9 | HST | ACS | FR656N ramp filter for HST ACS_HRC at central wavelength |
| HST/ACS_HRC.F658N | 6583.91 | 6584.06 | 6585.91 | 6509.93 | 6659.36 | 74.83 | 2579.93 | 1.78e-9 | HST | ACS | F658N filter for HST ACS_HRC |
| HST/ACS_HRC.F660N | 6599.44 | 6599.48 | 6600.01 | 6561.99 | 6642.83 | 35.68 | 2790.89 | 1.92e-9 | HST | ACS | F660N filter for HST ACS_HRC |
| HST/ACS_HRC.PR200L | 5655.72 | 6693.75 | 5564.30 | 1700.00 | 10917.13 | 4933.59 | 2680.70 | 2.51e-9 | HST | ACS | PR200L disperser for HST ACS_HRC |
| HST/ACS_HRC.POL_UV | 6231.95 | 7215.42 | 5926.10 | 1976.62 | 10971.27 | 5133.13 | 2758.04 | 2.13e-9 | HST | ACS | POL_UV filter for HST ACS_HRC |
| HST/ACS_HRC.POL_V | 6959.12 | 7629.00 | 6350.02 | 3600.42 | 10966.00 | 3910.78 | 3049.98 | 1.89e-9 | HST | ACS | POL_V filter for HST ACS_HRC |
| HST/ACS_HRC.F775W | 7665.08 | 7702.41 | 7624.32 | 6801.41 | 8630.74 | 1299.92 | 2527.37 | 1.29e-9 | HST | ACS | F775W filter for HST ACS_HRC |
| HST/ACS_HRC.G800L | 7504.96 | 7774.18 | 7261.77 | 5257.12 | 10898.32 | 3262.48 | 2697.43 | 1.44e-9 | HST | ACS | G800L disperser for HST ACS_HRC |
| HST/ACS_HRC.F814W | 8100.44 | 8196.29 | 8019.74 | 6868.12 | 9643.72 | 1933.96 | 2436.51 | 1.11e-9 | HST | ACS | F814W filter for HST ACS_HRC |
| HST/ACS_HRC.F892N | 8916.40 | 8916.79 | 8917.99 | 8790.25 | 9037.14 | 148.64 | 2288.91 | 8.63e-10 | HST | ACS | F892N filter for HST ACS_HRC |
| HST/ACS_HRC.FR914M | 9105.81 | 9117.96 | 9099.95 | 8381.08 | 9834.96 | 818.54 | 2257.56 | 8.16e-10 | HST | ACS | FR914M ramp filter for HST ACS_HRC at central wavelength |
| HST/ACS_HRC.F850LP | 9143.95 | 9193.55 | 9115.28 | 8015.25 | 10945.69 | 1549.70 | 2226.08 | 7.98e-10 | HST | ACS | F850LP filter for HST ACS_HRC |
 ≡ 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=2749.9449607383&id=HST/ACS_HRC.F250W><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=2739.3781746459&id=HST/ACS_HRC.F250W><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=2716.1331182064&id=HST/ACS_HRC.F250W><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=2763.7363468767&id=HST/ACS_HRC.F250W><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=593.94760628512,2721.5708332388,1&id=HST/ACS_HRC.F250W><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}
