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| WFC3 Instrument Handbook |
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CH4 25 km-agt filter.Figure A.175: Integrated system throughput for FQ889N.Figure A.176: Point source S/N vs. V+ABν for the FQ889N filter, assuming high sky backgrounds and a 5×5 pixel aperture.Figure A.177: Extended source S/N vs. V+ABν for the FQ889N filter, assuming high sky backgrounds and a source uniformly filling a 1 arcsec2 aperture.