Background
Here we present previous calibrations for the WFC3/UVIS instrument.
Previous UVIS Zeropoints
2017 Solution
The inverse sensitivity values written to the PHOTFLAM image header keyword are the CORRECT values for flux calibration for all except the UV filters observed on UVIS2. The IMPHTTAB carries the values for UVIS1 via the keywords PHOTFLAM and PHTFLAM1, and these are identical with the exception of the UV filters. Inverse sensitivity values for UVIS2 are written to the keyword PHTFLAM2 but should not be used for flux calibration with calibrated data products retrieved from MAST, since calwf3 by default will scale the UVIS2 chip by the chip sensitivity ratio to match UVIS1.
Changes from 2012
- Flat fields: Improved low-frequency in-flight corrections to the ground flats were computed in 2016 using CTE-corrected observations of Omega Centauri. The flats are normalized to the median value of each detector and no longer correct for sensitivity differences between CCDs. The photometric repeatability of white dwarf standards stepped across the field of view is better than 1% r.m.s. and 3% peak-to-peak over the full wavelength range of the detector (ISR 2016-04 and 2016-05).
- Inverse Sensitivity: The current chip-dependent inverse sensitivity values are systematically ~3.7% brighter than the 2012 solutions. Using the default AstroDrizzle configuration parameters when combining images with different signal to noise and telescope orientation on the sky can result in ‘clipping’ of pixel values in the PSF wings. This effect was discovered in the 2012 solutions and was corrected in the 2016 implementation.
2017
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Infinite Aperture Inverse Sensitivity Values for UVIS1 (2017) calculated from the master drizzled images, and an improved fit to the observed to synthetic photometry. Model Vega mag is calculated using CALSPEC model alpha_lyr_mod_002.fits, and the observed VegaMag is calculated using the STIS spectrum, alpha_lyr_stis_008.fits. Both are available from CRDS.
UVIS1 PHOTPLAM PHOTBW PHOTFLAM STMAG ABMAG VEGAMAG
stis_008Filter Å Å erg cm-2 A-1 e-1 mag mag mag F200LP 4989.2 1747.4 4.66567e-20 27.228 27.430 26.972 F218W 2228.8 129.3 1.44562e-17 21.000 22.952 21.268 F225W 2373.3 177.7 4.51883e-18 22.262 24.078 22.423 F275W 2710.4 164.5 3.18585e-18 22.642 24.169 22.672 F280N 2833.7 201.8 5.68782e-17 19.513 20.943 19.510 F300X 2822.9 317.3 1.38562e-18 23.546 24.985 23.565 F336W 3354.8 158.4 1.26612e-18 23.644 24.708 23.519 F343N 3435.2 86.7 2.52662e-18 22.894 23.906 22.748 F350LP 5883.6 1499.0 5.06907e-20 27.138 26.982 26.817 F373N 3730.2 18.3 1.33434e-17 21.087 21.920 21.029 F390M 3897.3 65.5 2.50543e-18 22.903 23.641 23.544 F390W 3923.9 291.2 4.91991e-19 24.670 25.394 25.176 F395N 3955.2 26.3 5.84977e-18 21.982 22.688 22.711 F410M 4109.0 57.1 2.31136e-18 22.990 23.614 23.769 F438W 4326.1 197.3 6.63951e-19 24.345 24.856 25.004 F467M 4682.6 68.5 1.64025e-18 23.363 23.702 23.852 F469N 4688.1 20.0 9.20878e-18 21.489 21.827 21.980 F475W 4772.1 421.1 2.45772e-19 25.424 25.722 25.814 F475X 4938.0 659.8 1.50818e-19 25.954 26.178 26.223 F487N 4871.4 21.7 5.80799e-18 21.990 22.244 22.047 F502N 5009.6 27.0 5.09210e-18 22.133 22.326 22.409 F547M 5447.2 206.2 4.52916e-19 24.760 24.771 24.766 F555W 5306.4 517.0 1.80962e-19 25.756 25.824 25.843 F600LP 7490.4 960.4 8.38224e-20 26.592 25.911 25.577 F606W 5886.5 657.0 1.13745e-19 26.260 26.103 26.014 F621M 6218.7 185.7 3.97176e-19 24.903 24.626 24.474 F625W 6241.6 451.3 1.68355e-19 25.834 25.550 25.396 F631N 6304.3 41.8 4.74223e-18 22.210 21.904 21.740 F645N 6453.6 41.5 3.25961e-18 22.617 22.260 22.064 F656N 6561.4 41.9 1.61673e-17 20.878 20.486 19.863 F657N 6566.6 41.0 2.15760e-18 23.065 22.670 22.339 F658N 6584.0 149.4 9.48980e-18 21.457 21.056 20.690 F665N 6655.9 42.2 1.95785e-18 23.171 22.747 22.504 F673N 6765.9 42.0 2.17628e-18 23.056 22.596 22.351 F680N 6877.6 112.0 6.86843e-19 24.308 23.813 23.549 F689M 6876.8 207.6 3.67186e-19 24.988 24.493 24.210 F763M 7615.1 229.5 3.78679e-19 24.954 24.238 23.853 F775W 7654.1 420.5 2.05683e-19 25.617 24.890 24.502 F814W 8052.5 672.5 1.47727e-19 25.976 25.139 24.712 F845M 8441.4 260.6 4.51768e-19 24.763 23.823 23.316 F850LP 9191.8 477.6 3.58908e-19 25.013 23.888 23.360 F953N 9530.7 69.6 7.90252e-18 21.656 20.452 19.832 -
Infinite Aperture Inverse Sensitivity Values for UVIS2 (2017) calculated from the master drizzled images and an improved fit to the observed to synthetic photometry.
The PHTFLAM2 values should *NOT* be used for flux calibration with calibrated data products from MAST, since calwf3 by default will scale the UVIS2 chip by the chip sensitivity ratio to match UVIS1.
UVIS2 PHOTPLAM PHOTBW PHTFLAM2 STMAG ABMAG VEGAMAG stis_008 Filter Å Å erg cm-2 A-1 e-1 mag mag mag F200LP 4889.2 1729.5 4.75278e-20 27.208 27.454 26.965 F218W 2224.4 125.2 1.12973e-17 21.268 23.224 21.539 F225W 2359.5 173.4 3.75053e-18 22.465 24.293 22.634 F275W 2704.0 165.7 3.04219e-18 22.692 24.224 22.723 F280N 2830.7 203.1 5.57239e-17 19.535 20.968 19.533 F300X 2808.0 317.6 1.29551e-18 23.619 25.069 23.640 F336W 3354.9 158.3 1.23523e-18 23.671 24.734 23.546 F343N 3435.3 86.7 2.44841e-18 22.928 23.940 22.782 F350LP 5859.4 1492.0 5.22929e-20 27.104 26.957 26.792 F373N 3730.2 18.3 1.28942e-17 21.124 21.957 21.066 F390M 3897.0 65.5 2.47292e-18 22.917 23.655 23.558 F390W 3920.8 291.1 4.89150e-19 24.676 25.402 25.179 F395N 3955.2 26.3 5.86792e-18 21.979 22.685 22.707 F410M 4108.9 57.0 2.31635e-18 22.988 23.611 23.767 F438W 4325.0 197.4 6.67879e-19 24.338 24.850 24.999 F467M 4682.6 68.4 1.63687e-18 23.365 23.705 23.854 F469N 4688.1 20.1 9.28404e-18 21.481 21.818 21.971 F475W 4770.9 421.6 2.48875e-19 25.410 25.709 25.801 F475X 4934.0 660.2 1.52639e-19 25.941 26.167 26.212 F487N 4871.4 21.8 5.82426e-18 21.987 22.241 22.044 F502N 5009.6 27.1 5.10403e-18 22.130 22.323 22.406 F547M 5446.8 206.1 4.53484e-19 24.759 24.770 24.764 F555W 5305.5 516.5 1.83822e-19 25.739 25.807 25.826 F600LP 7476.8 952.5 8.66320e-20 26.556 25.879 25.546 F606W 5884.6 656.7 1.15157e-19 26.247 26.090 26.001 F621M 6218.9 185.7 4.02744e-19 24.887 24.611 24.458 F625W 6240.8 451.1 1.71208e-19 25.816 25.532 25.378 F631N 6304.3 42.6 4.76557e-18 22.205 21.899 21.735 F645N 6453.6 42.4 3.29580e-18 22.605 22.248 22.052 F656N 6561.4 42.7 1.61800e-17 20.878 20.485 19.863 F657N 6566.6 41.1 2.16816e-18 23.060 22.665 22.333 F658N 6583.9 152.2 9.55529e-18 21.449 21.049 20.683 F665N 6655.8 42.3 1.98434e-18 23.156 22.732 22.489 F673N 6765.9 42.2 2.22027e-18 23.034 22.574 22.329 F680N 6877.4 112.1 6.91950e-19 24.300 23.805 23.541 F689M 6876.5 207.9 3.72297e-19 24.973 24.478 24.195 F763M 7613.5 229.0 3.91543e-19 24.918 24.202 23.817 F775W 7651.2 419.1 2.11726e-19 25.586 24.859 24.472 F814W 8043.7 670.3 1.52015e-19 25.945 25.110 24.684 F845M 8439.7 260.1 4.59483e-19 24.744 23.805 23.298 F850LP 9186.7 474.2 3.77493e-19 24.958 23.834 23.306 F953N 9530.7 71.1 8.08537e-18 21.631 20.427 19.807 -
2017 UVIS1 Inverse Sensitivity Values for an aperture with r=10 pixels (0.3962 arcsec), calculated from the master drizzled images, filter-based encircled energy curves and an improved fit to the observed-to-synthetic photometry.
Filter PHOTPLAM PHOTBW PHOTFLAM STMAG ABMAG VegaMAG VegaMAG Å Å erg cm-2 A-1 e-1 mod_002 stis_008 F200LP 5012.2 1749.7 5.186767e-20 27.113 27.305 26.849 26.858 F218W 2229.7 129.9 1.696203e-17 20.826 22.777 20.993 21.094 F225W 2374.8 178.0 5.263383e-18 22.097 23.911 22.164 22.256 F275W 2711.3 164.7 3.661410e-18 22.491 24.017 22.464 22.521 F280N 2835.5 204.7 6.526799e-17 19.363 20.792 19.309 19.363 F300X 2826.7 318.8 1.584206e-18 23.400 24.836 23.374 23.419 F336W 3355.7 158.5 1.423047e-18 23.517 24.580 23.386 23.392 F343N 3435.5 86.7 2.831929e-18 22.770 23.782 22.621 22.624 F350LP 5881.3 1494.4 5.615990e-20 27.026 26.871 26.706 26.708 F373N 3730.2 18.3 1.484114e-17 20.971 21.805 20.864 20.913 F390M 3897.3 65.5 2.789315e-18 22.786 23.525 23.433 23.428 F390W 3925.0 291.2 5.468239e-19 24.555 25.278 25.057 25.062 F395N 3955.2 26.3 6.508612e-18 21.866 22.573 22.590 22.595 F410M 4109.1 57.1 2.566086e-18 22.877 23.500 23.647 23.655 F438W 4326.8 197.3 7.339874e-19 24.236 24.747 24.888 24.895 F467M 4682.5 68.4 1.807666e-18 23.257 23.597 23.742 23.747 F469N 4688.1 19.9 1.015304e-17 21.384 21.721 21.867 21.874 F475W 4773.3 421.2 2.710128e-19 25.318 25.616 25.703 25.707 F475X 4939.9 659.5 1.663889e-19 25.847 26.071 26.112 26.115 F487N 4871.1 21.7 6.489633e-18 21.869 22.123 21.912 21.924 F502N 5009.7 26.8 5.589400e-18 22.032 22.225 22.299 22.308 F547M 5446.7 206.1 4.984033e-19 24.656 24.667 24.662 24.662 F555W 5306.6 516.8 1.993736e-19 25.651 25.719 25.735 25.737 F600LP 7483.6 956.8 9.306792e-20 26.478 25.800 25.466 25.466 F606W 5885.9 656.5 1.254302e-19 26.154 25.997 25.907 25.908 F621M 6218.5 185.6 4.373232e-19 24.798 24.522 24.369 24.369 F625W 6241.0 451.1 1.857493e-19 25.728 25.444 25.289 25.289 F631N 6304.3 41.4 5.235098e-18 22.103 21.797 21.633 21.633 F645N 6453.6 41.2 3.589479e-18 22.512 22.156 21.960 21.960 F656N 6561.4 41.5 1.784508e-17 20.771 20.378 19.756 19.756 F657N 6566.6 41.0 2.383543e-18 22.957 22.562 22.231 22.231 F658N 6584.1 147.6 1.051123e-17 21.346 20.945 20.579 20.579 F665N 6655.9 42.2 2.166068e-18 23.061 22.637 22.394 22.394 F673N 6765.9 41.9 2.409670e-18 22.945 22.486 22.240 22.240 F680N 6877.7 112.0 7.597134e-19 24.198 23.703 23.440 23.440 F689M 6876.8 207.7 4.059970e-19 24.879 24.384 24.101 24.101 F763M 7614.8 229.5 4.190063e-19 24.844 24.128 23.743 23.743 F775W 7653.3 420.3 2.277082e-19 25.507 24.779 24.392 24.392 F814W 8048.2 670.7 1.642789e-19 25.861 25.025 24.598 24.598 F845M 8440.5 260.4 5.027632e-19 24.647 23.707 23.200 23.200 F850LP 9189.2 477.2 4.036685e-19 24.885 23.761 23.233 23.233 F953N 9530.7 69.6 8.924947e-18 21.523 20.320 19.700 19.700 -
2017 UVIS2 Inverse Sensitivity Values for an aperture with r=10 pixels (0.3962 arcsec), calculated from the master drizzled images, filter-based encircled energy curves and an improved fit to the observed-to-synthetic photometry
Filter PHOTPLAM PHOTBW PHTFLAM2 STMAG ABMAG VegaMAG VegaMAG Å Å erg cm-2 A-1 e-1 mod_002 stis_008 F200LP 4912.1 1732.9 5.284298e-20 27.093 27.328 26.841 26.851 F218W 2225.2 125.7 1.320972e-17 21.098 23.053 21.268 21.369 F225W 2360.9 173.7 4.355211e-18 22.302 24.129 22.377 22.470 F275W 2704.5 165.7 3.489674e-18 22.543 24.075 22.517 22.574 F280N 2832.5 206.1 6.394365e-17 19.386 20.817 19.332 19.385 F300X 2811.5 319.1 1.479158e-18 23.475 24.922 23.449 23.496 F336W 3355.5 158.2 1.386733e-18 23.545 24.608 23.414 23.420 F343N 3435.3 86.6 2.741244e-18 22.805 23.817 22.656 22.660 F350LP 5855.3 1485.6 5.792884e-20 26.993 26.847 26.681 26.684 F373N 3730.2 18.3 1.443284e-17 21.002 21.835 20.895 20.944 F390M 3897.2 65.5 2.749946e-18 22.802 23.540 23.448 23.443 F390W 3922.5 291.2 5.433643e-19 24.562 25.287 25.062 25.067 F395N 3955.2 26.3 6.503831e-18 21.867 22.573 22.591 22.596 F410M 4108.9 57.0 2.565396e-18 22.877 23.501 23.647 23.656 F438W 4325.5 197.3 7.366936e-19 24.232 24.744 24.884 24.892 F467M 4682.6 68.4 1.801375e-18 23.261 23.601 23.746 23.750 F469N 4688.1 20.0 1.021851e-17 21.377 21.714 21.860 21.867 F475W 4771.8 421.7 2.741136e-19 25.305 25.604 25.691 25.696 F475X 4935.6 659.9 1.681996e-19 25.835 26.061 26.102 26.106 F487N 4871.1 21.8 6.507235e-18 21.867 22.120 21.909 21.921 F502N 5009.6 27.0 5.607420e-18 22.028 22.221 22.296 22.304 F547M 5446.3 206.0 4.986429e-19 24.656 24.667 24.661 24.662 F555W 5305.8 516.4 2.023455e-19 25.635 25.703 25.720 25.722 F600LP 7465.4 944.2 9.624049e-20 26.442 25.768 25.437 25.437 F606W 5884.4 656.2 1.268369e-19 26.142 25.985 25.896 25.897 F621M 6218.6 185.6 4.429861e-19 24.784 24.508 24.355 24.355 F625W 6240.5 451.0 1.886269e-19 25.711 25.427 25.273 25.273 F631N 6304.3 42.2 5.254116e-18 22.099 21.793 21.629 21.629 F645N 6453.6 42.0 3.631796e-18 22.500 22.143 21.947 21.947 F656N 6561.4 42.4 1.794266e-17 20.765 20.372 19.750 19.750 F657N 6566.6 41.1 2.401176e-18 22.949 22.554 22.223 22.223 F658N 6584.0 150.7 1.061277e-17 21.335 20.935 20.569 20.569 F665N 6655.9 42.2 2.190493e-18 23.049 22.625 22.382 22.382 F673N 6765.9 42.1 2.448332e-18 22.928 22.468 22.223 22.223 F680N 6877.4 112.1 7.627544e-19 24.194 23.699 23.435 23.435 F689M 6876.7 207.8 4.107092e-19 24.866 24.371 24.088 24.088 F763M 7613.5 228.9 4.316593e-19 24.812 24.096 23.711 23.711 F775W 7650.9 419.0 2.335215e-19 25.479 24.753 24.365 24.365 F814W 8038.1 667.0 1.686331e-19 25.833 24.999 24.574 24.574 F845M 8438.8 259.8 5.088846e-19 24.633 23.694 23.187 23.187 F850LP 9173.3 467.6 4.299596e-19 24.816 23.696 23.169 23.169 F953N 9530.5 71.6 9.343482e-18 21.474 20.270 19.650 19.650
2012
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UVIS Long-Pass (LP) and Extremely Wide (X) Filters
Filter PHOTPLAM PHOTFLAM PHOTBW STmag ABmag VEGAmag F200LP 4968.6 5.11E-20 1734.9 27.1298 27.3407 26.8902 F300X 2822.4 1.42E-18 317.23 23.5174 24.9565 23.5363 F350LP 5857.3 5.30E-20 1478.6 27.0899 26.9435 26.7874 F475X 4941.4 1.53E-19 660.34 25.935 26.1579 26.2082 F600LP 7450.5 8.76E-20 936.93 26.5434 25.8746 25.5505 F850LP 9168.8 3.79E-19 467.53 24.9532 23.8338 23.313 UVIS Wide Band Filters
Filter PHOTPLAM PHOTFLAM PHOTBW STmag ABmag VEGAmag F218W 2228.5 1.43E-17 129.14 21.012 22.9641 21.2743 F225W 2372.8 4.68E-18 177.54 22.2245 24.0403 22.3808 F275W 2710.2 3.30E-18 164.51 22.6034 24.1305 22.6322 F336W 3354.8 1.31E-18 158.44 23.6044 24.6682 23.4836 F390W 3924.4 5.09E-19 291.22 24.633 25.3562 25.1413 F438W 4326.5 6.86E-19 197.3 24.3092 24.8206 24.9738 F475W 4773.7 2.55E-19 421.23 25.3821 25.6799 25.7783 F555W 5308.1 1.87E-19 517.14 25.7232 25.7906 25.816 F606W 5887.4 1.17E-19 656.58 26.2266 26.0691 25.9866 F625W 6241.3 1.72E-19 451.03 25.8106 25.5263 25.3783 F775W 7648.5 2.13E-19 419.11 25.5812 24.8555 24.4747 F814W 8029.5 1.54E-19 663.33 25.9299 25.0985 24.6803 UVIS Medium Band Filters
Filter PHOTPLAM PHOTFLAM PHOTBW STmag ABmag VEGAmag F390M 3897.3 2.52E-18 65.48 22.8977 23.636 23.5377 F410M 4109 2.35E-18 56.96 22.9727 23.5962 23.7531 FQ422M 4219.2 4.99E-18 38.33 22.1542 22.7202 22.9611 F467M 4682.5 1.67E-18 68.3 23.3402 23.6799 23.8362 F547M 5447.4 4.63E-19 206.22 24.7356 24.7467 24.7477 F621M 6218.6 4.07E-19 185.62 24.8765 24.6001 24.4539 F689M 6876.3 3.77E-19 207.57 24.9587 24.4641 24.1873 F763M 7613.6 3.90E-19 229.33 24.9229 24.207 23.8283 F845M 8437.5 4.70E-19 260.13 24.7201 23.7811 23.2809 UVIS Narrow Band Filters
Filter PHOTPLAM PHOTFLAM PHOTBW STmag ABmag VEGAmag F280N 2833.5 5.63E-17 201.57 19.5231 20.9536 19.5211 F343N 3435.2 2.56E-18 86.72 22.8792 23.8916 22.738 F373N 3730.2 1.35E-17 18.33 21.0718 21.9052 21.0119 F395N 3955.2 5.98E-18 26.29 21.9583 22.6646 22.6862 F469N 4688.1 9.52E-18 19.92 21.454 21.7911 21.9501 F487N 4871.4 5.95E-18 21.68 21.9635 22.2174 22.0379 F502N 5009.6 5.24E-18 26.9 22.1025 22.2956 22.3839 F631N 6304.3 4.79E-18 41.3 22.1983 21.8922 21.7344 F645N 6453.6 3.37E-18 41.23 22.582 22.2251 22.0362 F656N 6561.4 1.62E-17 41.58 20.8755 20.4827 19.8215 F657N 6566.6 2.22E-18 40.99 23.0354 22.6408 22.3155 F658N 6584 9.74E-18 147.88 21.4291 21.0287 20.6795 F665N 6655.9 1.99E-18 42.18 23.1505 22.7266 22.4899 F673N 6765.9 2.23E-18 41.92 23.0279 22.5684 22.3297 F680N 6877.5 6.96E-19 112 24.2942 23.7992 23.5419 F953N 9530.5 8.51E-18 72.24 21.5755 20.372 19.7549 FQ232N 2432.2 1.50E-16 263.5 18.4569 20.219 18.5876 FQ243N 2476.4 1.13E-16 194.01 18.7654 20.4884 18.8381 FQ378N 3792.4 5.80E-18 32.15 21.9908 22.7884 22.3063 FQ387N 3873.6 2.00E-17 15.01 20.6453 21.3968 21.3126 FQ436N 4367.1 1.20E-17 22.82 21.202 21.6932 21.7314 FQ437N 4371 1.69E-17 21.61 20.8328 21.322 21.4381 FQ492N 4933.4 3.12E-18 35.18 22.6651 22.8914 22.9586 FQ508N 5091 2.98E-18 42.38 22.7148 22.8729 22.9457 FQ575N 5757.7 1.81E-17 42.2 20.7574 20.6482 20.5886 FQ619N 6198.5 4.68E-18 36.45 22.2251 21.9557 21.8172 FQ634N 6349.2 4.26E-18 43 22.3253 22.0038 21.8345 FQ672N 6716.4 1.37E-17 69.98 21.0583 20.6147 20.3678 FQ674N 6730.7 1.97E-17 39.21 20.6665 20.2183 19.9735 FQ727N 7275.2 4.65E-18 63.22 22.2307 21.6135 21.2892 FQ750N 7502.5 4.51E-18 28.12 22.2638 21.5798 21.2172 FQ889N 8892.1 5.05E-18 55.51 22.1427 21.0898 20.5772 FQ906N 9057.8 5.08E-18 57.32 22.1351 21.0421 20.5333 FQ924N 9247.6 6.05E-18 46.29 21.9448 20.8067 20.2174 FQ937N 9372.4 6.71E-18 54.81 21.833 20.6658 20.2078 -
UVIS Longpass (LP) and Extremely Wide (X) Filters
Filter PHOTPLAM PHOTFLAM PHOTBW STmag ABmag VEGAmag F200LP 4968.6 5.61E-20 1734.9 27.0281 27.239 26.7885 F300X 2822.4 1.63E-18 317.23 23.3678 24.8069 23.3867 F350LP 5857.3 5.82E-20 1478.6 26.9877 26.8413 26.6852 F475X 4941.4 1.69E-19 660.34 25.833 26.0559 26.1062 F850LP 9168.8 4.20E-19 467.53 24.8428 23.7234 23.2026 F600LP 7450.5 9.67E-20 936.93 26.4369 25.7681 25.444 UVIS Wide Band Filters
Filter PHOTPLAM PHOTFLAM PHOTBW STmag ABmag VEGAmag F218W 2228.5 1.70E-17 129.14 20.8255 22.7776 21.0878 F225W 2372.8 5.51E-18 177.54 22.0471 23.8629 22.2034 F275W 2710.2 3.81E-18 164.51 22.4469 23.974 22.4757 F336W 3354.8 1.48E-18 158.44 23.4739 24.5377 23.3531 F390W 3924.4 5.67E-19 291.22 24.5157 25.2389 25.024 F438W 4326.5 7.60E-19 197.3 24.1983 24.7097 24.8629 F475W 4773.7 2.81E-19 421.23 25.2777 25.5755 25.6739 F555W 5308.1 2.05E-19 517.14 25.6216 25.689 25.7144 F606W 5887.4 1.29E-19 656.58 26.1243 25.9668 25.8843 F625W 6241.3 1.89E-19 451.03 25.7073 25.423 25.275 F775W 7648.5 2.35E-19 419.11 25.4744 24.7487 24.3679 F814W 8029.5 1.70E-19 663.33 25.8226 24.9912 24.573 UVIS Medium Band Filters
Filter PHOTPLAM PHOTFLAM PHOTBW STmag ABmag VEGAmag F390M 3897.3 2.81E-18 65.48 22.7797 23.518 23.4197 F410M 4109 2.61E-18 56.96 22.8587 23.4822 23.6391 FQ422M 4219.2 5.54E-18 38.33 22.0418 22.6078 22.8487 F467M 4682.5 1.85E-18 68.3 23.2344 23.5741 23.7304 F547M 5447.4 5.09E-19 206.22 24.6339 24.645 24.646 F621M 6218.6 4.47E-19 185.62 24.7733 24.4969 24.3507 F689M 6876.3 4.16E-19 207.57 24.8532 24.3586 24.0818 F763M 7613.6 4.30E-19 229.33 24.8162 24.1003 23.7216 F845M 8437.5 5.19E-19 260.13 24.6119 23.6729 23.1727 UVIS Narrow Band Filters
Filter PHOTPLAM PHOTFLAM PHOTBW STmag ABmag VEGAmag F280N 2833.5 6.46E-17 201.57 19.3742 20.8047 19.3722 F343N 3435.2 2.88E-18 86.72 22.7506 23.763 22.6094 F373N 3730.2 1.51E-17 18.33 20.95 21.7834 20.8901 F395N 3955.2 6.66E-18 26.29 21.8417 22.548 22.5696 F469N 4688.1 1.05E-17 19.92 21.3483 21.6854 21.8444 F487N 4871.4 6.54E-18 21.68 21.8605 22.1144 21.9349 F502N 5009.6 5.75E-18 26.9 22.0013 22.1944 22.2827 F631N 6304.3 5.27E-18 41.3 22.0948 21.7887 21.6309 F645N 6453.6 3.71E-18 41.23 22.478 22.1211 21.9322 F656N 6561.4 1.78E-17 41.58 20.7711 20.3783 19.7171 F657N 6566.6 2.44E-18 40.99 22.931 22.5364 22.2111 F658N 6584 1.07E-17 147.88 21.3246 20.9242 20.575 F665N 6655.9 2.20E-18 42.18 23.0458 22.6219 22.3852 F673N 6765.9 2.46E-18 41.92 22.9228 22.4633 22.2246 F680N 6877.5 7.67E-19 112 24.1887 23.6937 23.4364 F953N 9530.5 9.43E-18 72.24 21.4634 20.2599 19.6428 FQ232N 2432.2 1.76E-16 263.5 18.2832 20.0453 18.4139 FQ243N 2476.4 1.32E-16 194.01 18.5945 20.3175 18.6672 FQ378N 3792.4 6.48E-18 32.15 21.8704 22.668 22.1859 FQ387N 3873.6 2.24E-17 15.01 20.5268 21.2783 21.1941 FQ436N 4367.1 1.33E-17 22.82 21.0917 21.5829 21.6211 FQ437N 4371 1.87E-17 21.61 20.7226 21.2118 21.3279 FQ492N 4933.4 3.43E-18 35.18 22.5629 22.7892 22.8564 FQ508N 5091 3.27E-18 42.38 22.6135 22.7716 22.8444 FQ575N 5757.7 1.99E-17 42.2 20.6553 20.5461 20.4865 FQ619N 6198.5 5.14E-18 36.45 22.122 21.8526 21.7141 FQ634N 6349.2 4.69E-18 43 22.2217 21.9002 21.7309 FQ672N 6716.4 1.51E-17 69.98 20.9533 20.5097 20.2628 FQ674N 6730.7 2.16E-17 39.21 20.5615 20.1133 19.8685 FQ727N 7275.2 5.13E-18 63.22 22.1244 21.5072 21.1829 FQ750N 7502.5 4.98E-18 28.12 22.1572 21.4732 21.1106 FQ889N 8892.1 5.58E-18 55.51 22.0334 20.9805 20.4679 FQ906N 9057.8 5.62E-18 57.32 22.0252 20.9322 20.4234 FQ924N 9247.6 6.71E-18 46.29 21.834 20.6959 20.1066 FQ937N 9372.4 7.44E-18 54.81 21.7216 20.5544 20.0964
2009
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FILTER PHOTPLAM PHOTFLAM STMAG ABMAG VEGAMAG
F218W 2228.5 1.4622E-17 20.99 22.94 21.25 F225W 2372.7 4.5984E-18 22.24 24.06 22.4 F275W 2710.1 3.2596E-18 22.62 24.14 22.65 F280N 2833.5 5.708E-17 19.51 20.94 19.51 F300X 2822.5 1.4724E-18 23.48 24.92 23.5 F336W 3354.8 1.3424E-18 23.58 24.64 23.46 F343N 3435.2 2.5415E-18 22.89 23.9 22.75 F350LP 5857.3 5.3274E-20 27.08 26.94 26.78 F373N 3730.2 1.3235E-17 21.1 21.93 21.04 F390M 3897.3 2.5193E-18 22.9 23.64 23.54 F390W 3924.4 5.0448E-19 24.64 25.37 25.15 F395N 3955.2 5.9937E-18 21.96 22.66 22.68 F410M 4109 2.3101E-18 22.99 23.61 23.77 F438W 4326.5 6.8074E-19 24.32 24.83 24.98 F467M 4682.6 1.6359E-18 23.37 23.71 23.86 F469N 4688.1 9.4162E-18 21.47 21.8 21.96 F475W 4773.7 2.5327E-19 25.39 25.69 25.79 F475X 4941.4 1.5389E-19 25.93 26.15 26.21 F487N 4871.4 5.9748E-18 21.96 22.21 22.03 F502N 5009.6 5.2035E-18 22.11 22.3 22.39 F547M 5447.4 4.7465E-19 24.71 24.72 24.72 F555W 5308.1 1.8762E-19 25.72 25.78 25.81 F600LP 7450.5 8.9588E-20 26.52 25.85 25.53 F606W 5887.4 1.165E-19 26.23 26.08 25.99 F621M 6218.6 4.0967E-19 24.87 24.59 24.45 F625W 6241.3 1.74E-19 25.8 25.52 25.37 F645N 6453.6 3.3088E-18 22.6 22.24 22.05 F656N 6561.4 1.538E-17 20.93 20.54 19.92 F657N 6566.6 2.1406E-18 23.08 22.68 22.36 F658N 6584 9.2876E-18 21.48 21.08 20.72 F665N 6655.9 1.9693E-18 23.16 22.74 22.5 F673N 6765.9 2.2166E-18 23.04 22.58 22.34 F689M 6876.3 3.7559E-19 24.96 24.47 24.19 F763M 7613.5 3.921E-19 24.92 24.2 23.82 F775W 7648.5 2.1446E-19 25.57 24.85 24.47 F814W 8029.5 1.5591E-19 25.92 25.09 24.67 F845M 8437.5 4.7301E-19 24.71 23.77 23.27 F953N 9530.5 9.385E-18 21.47 20.27 19.65
Previous Quad Filters Zeropoints
Here we present the 2012 Infinite Aperture and 0.4 arcsec inverse sensitivity values for the quad filters. These values still make use of the pre-flight flats that contain the flare. See ISR 2011-16 for the geometric model of the flare, and ISR 2013-10 for the inflight corrections to the flats.
For general information on the quad filters, see the WFC3 Instrument Handbook.
2012 Quad Filter Zeropoints
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UVIS FILTER UVIS CCD PHOTPLAM PHOTBW PHOTFLAM r=Infinite STmag ABmag VEGAmag Å Å erg cm-2 A-1 e-1 mag mag mag FQ422M 2 4219.20 38.33 4.9924E-18 22.1542 22.7202 22.9611 FQ232N 2 2432.20 263.50 1.5040E-16 18.4569 20.2190 18.5876 FQ243N 2 2476.40 194.01 1.1320E-16 18.7654 20.4884 18.8381 FQ378N 1 3792.40 32.15 5.8031E-18 21.9908 22.7884 22.3063 FQ387N 1 3873.60 15.01 2.0039E-17 20.6453 21.3968 21.3126 FQ436N 2 4367.10 22.82 1.2000E-17 21.202 21.6932 21.7314 FQ437N 1 4371.00 21.61 1.6861E-17 20.8328 21.3220 21.4381 FQ492N 1 4933.40 35.18 3.1187E-18 22.6651 22.8914 22.9586 FQ508N 1 5091.00 42.38 2.9791E-18 22.7148 22.8729 22.9457 FQ575N 2 5757.70 42.20 1.8074E-17 20.7574 20.6482 20.5886 FQ619N 1 6198.50 36.45 4.6770E-18 22.2251 21.9557 21.8172 FQ634N 2 6349.20 43.00 4.2648E-18 22.3253 22.0038 21.8345 FQ672N 2 6716.40 69.98 1.3699E-17 21.0583 20.6147 20.3678 FQ674N 1 6730.70 39.21 1.9652E-17 20.6665 20.2183 19.9735 FQ727N 2 7275.20 63.22 4.6530E-18 22.2307 21.6135 21.2892 FQ750N 1 7502.50 28.12 4.5133E-18 22.2638 21.5798 21.2172 FQ889N 1 8892.10 55.51 5.0458E-18 22.1427 21.0898 20.5772 FQ906N 2 9057.80 57.32 5.0811E-18 22.1351 21.0421 20.5333 FQ924N 2 9247.60 46.29 6.0547E-18 21.9448 20.8067 20.2174 FQ937N 1 9372.40 54.81 6.7114E-18 21.833 20.6658 20.2078 0.4 Arcsec (2012)
UVIS FILTER UVIS CCD PHOTPLAM PHOTBW PHOTFLAM r=0.4 arcsec STmag ABmag VEGAmag Å Å erg cm-2 A-1 e-1 mag mag mag FQ422M 2 4219.20 38.33 5.53708e-18 22.0418 22.6078 22.8487 FQ232N 2 2432.20 263.50 1.76489e-16 18.2832 20.0453 18.4139 FQ243N 2 2476.40 194.01 1.32499e-16 18.5945 20.3175 18.6672 FQ378N 1 3792.40 32.15 6.48351e-18 21.8704 22.6680 22.1859 FQ387N 1 3873.60 15.01 2.23500e-17 20.5268 21.2783 21.1941 FQ436N 2 4367.10 22.82 1.32831e-17 21.0917 21.5829 21.6211 FQ437N 1 4371.00 21.61 1.86629e-17 20.7226 21.2118 21.3279 FQ492N 1 4933.40 35.18 3.42639e-18 22.5629 22.7892 22.8564 FQ508N 1 5091.00 42.38 3.27047e-18 22.6135 22.7716 22.8444 FQ575N 2 5757.70 42.20 1.98563e-17 20.6553 20.5461 20.4865 FQ619N 1 6198.50 36.45 5.14293e-18 22.1220 21.8526 21.7141 FQ634N 2 6349.20 43.00 4.69199e-18 22.2217 21.9002 21.7309 FQ672N 2 6716.40 69.98 1.50895e-17 20.9533 20.5097 20.2628 FQ674N 1 6730.70 39.21 2.16478e-17 20.5615 20.1133 19.8685 FQ727N 2 7275.20 63.22 5.13166e-18 22.1244 21.5072 21.1829 FQ750N 1 7502.50 28.12 4.97883e-18 22.1572 21.4732 21.1106 FQ889N 1 8892.10 55.51 5.58031e-18 22.0334 20.9805 20.4679 FQ906N 2 9057.80 57.32 5.62212e-18 22.0252 20.9322 20.4234 FQ924N 2 9247.60 46.29 6.70502e-18 21.8340 20.6959 20.1066 FQ937N 1 9372.40 54.81 7.43637e-18 21.7216 20.5544 20.0964 -
UVIS FILTER UVIS CCD PHOTPLAM PHOTBW PHOTFLAM r=0.4 arcsec STmag ABmag VEGAmag Å Å erg cm-2 A-1 e-1 mag mag mag FQ422M 2 4219.20 38.33 5.53708e-18 22.0418 22.6078 22.8487 FQ232N 2 2432.20 263.50 1.76489e-16 18.2832 20.0453 18.4139 FQ243N 2 2476.40 194.01 1.32499e-16 18.5945 20.3175 18.6672 FQ378N 1 3792.40 32.15 6.48351e-18 21.8704 22.6680 22.1859 FQ387N 1 3873.60 15.01 2.23500e-17 20.5268 21.2783 21.1941 FQ436N 2 4367.10 22.82 1.32831e-17 21.0917 21.5829 21.6211 FQ437N 1 4371.00 21.61 1.86629e-17 20.7226 21.2118 21.3279 FQ492N 1 4933.40 35.18 3.42639e-18 22.5629 22.7892 22.8564 FQ508N 1 5091.00 42.38 3.27047e-18 22.6135 22.7716 22.8444 FQ575N 2 5757.70 42.20 1.98563e-17 20.6553 20.5461 20.4865 FQ619N 1 6198.50 36.45 5.14293e-18 22.1220 21.8526 21.7141 FQ634N 2 6349.20 43.00 4.69199e-18 22.2217 21.9002 21.7309 FQ672N 2 6716.40 69.98 1.50895e-17 20.9533 20.5097 20.2628 FQ674N 1 6730.70 39.21 2.16478e-17 20.5615 20.1133 19.8685 FQ727N 2 7275.20 63.22 5.13166e-18 22.1244 21.5072 21.1829 FQ750N 1 7502.50 28.12 4.97883e-18 22.1572 21.4732 21.1106 FQ889N 1 8892.10 55.51 5.58031e-18 22.0334 20.9805 20.4679 FQ906N 2 9057.80 57.32 5.62212e-18 22.0252 20.9322 20.4234 FQ924N 2 9247.60 46.29 6.70502e-18 21.8340 20.6959 20.1066 FQ937N 1 9372.40 54.81 7.43637e-18 21.7216 20.5544 20.0964
Previous UVIS Encircled Energies
2009 Encircled Energies
After WFC3's installation in 2009, deep observations in F275W and F625W were obtained in 5 positions across the UVIS array, and these were used to revise the pre-flight EE. EE fractions for all remaining filters were interpolated from the revised 2009 optical model. See ISR 2009-38 for more details.
The tables listed below can also be downloaded as a DAT file.
2009 ee
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0.1 0.15 0.2 0.25 0.3 0.4 0.5 0.6 0.8 1 1.5 2 2000 Å 0.66 0.717 0.752 0.781 0.802 0.831 0.861 0.884 0.936 0.967 0.989 0.994 3000 Å 0.739 0.793 0.822 0.844 0.858 0.88 0.894 0.906 0.928 0.946 0.984 0.992 4000 Å 0.754 0.823 0.845 0.864 0.88 0.899 0.912 0.922 0.936 0.948 0.973 0.989 5000 Å 0.745 0.834 0.859 0.875 0.888 0.911 0.923 0.932 0.944 0.954 0.97 0.985 6000 Å 0.72 0.832 0.859 0.877 0.89 0.91 0.925 0.934 0.947 0.955 0.97 0.98 7000 Å 0.687 0.823 0.857 0.874 0.889 0.907 0.923 0.933 0.946 0.955 0.969 0.977 8000 Å 0.65 0.807 0.853 0.87 0.883 0.906 0.918 0.931 0.945 0.955 0.967 0.976 9000 Å 0.623 0.778 0.847 0.867 0.879 0.904 0.915 0.927 0.942 0.952 0.966 0.975 10000 Å 0.612 0.742 0.844 0.868 0.879 0.9 0.918 0.927 0.944 0.955 0.97 0.978 11000 Å 0.605 0.699 0.829 0.864 0.876 0.894 0.917 0.923 0.942 0.952 0.968 0.976 -
1 2 3 5 7 9 11 13 15 17 19 21 23 25 51 101 2000 Å 0.126 0.354 0.546 0.681 0.725 0.757 0.782 0.801 0.816 0.83 0.843 0.857 0.868 0.879 0.978 0.996 3000 Å 0.165 0.412 0.61 0.76 0.8 0.826 0.845 0.858 0.868 0.879 0.887 0.893 0.899 0.905 0.964 0.994 4000 Å 0.184 0.431 0.613 0.784 0.827 0.849 0.866 0.88 0.891 0.898 0.905 0.91 0.916 0.92 0.957 0.992 5000 Å 0.188 0.437 0.6 0.783 0.839 0.861 0.876 0.889 0.9 0.909 0.916 0.922 0.926 0.93 0.962 0.992 6000 Å 0.18 0.434 0.578 0.767 0.839 0.861 0.878 0.89 0.9 0.909 0.916 0.923 0.928 0.932 0.962 0.987 7000 Å 0.166 0.423 0.563 0.738 0.832 0.86 0.874 0.888 0.899 0.907 0.914 0.92 0.926 0.931 0.961 0.984 8000 Å 0.149 0.405 0.553 0.699 0.821 0.856 0.87 0.883 0.895 0.905 0.911 0.917 0.923 0.928 0.961 0.982 9000 Å 0.132 0.38 0.543 0.662 0.802 0.851 0.869 0.878 0.889 0.9 0.909 0.914 0.919 0.924 0.959 0.98 10000 Å 0.117 0.352 0.531 0.638 0.775 0.849 0.869 0.88 0.888 0.898 0.909 0.917 0.921 0.926 0.962 0.983 11000 Å 0.103 0.322 0.51 0.624 0.737 0.838 0.864 0.877 0.884 0.892 0.902 0.911 0.919 0.923 0.96 0.981 -
wl(um): 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 Centered 0.041 0.056 0.061 0.061 0.058 0.053 0.048 0.043 0.039 0.035 Corner 0.04 0.051 0.055 0.055 0.053 0.05 0.047 0.042 0.038 0.034 -
Wavelength 0.2 um 0.3 um 0.4 um 0.5 um 0.6 um 0.7 um 0.8 um 0.9 um 1 um 1.1 um pixels 2.069 1.87 1.738 1.675 1.681 1.746 1.844 1.96 2.091 2.236 arcsec 0.083 0.075 0.07 0.067 0.067 0.07 0.074 0.078 0.084 0.089
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