# # From ACS ISR 2008-01 (http://www.stecf.org) # # Table 2: Flux versus extraction aperture half-width for the G800L grism in the # WFC (1st order), relative to the default aperture half-width of 0.5 arcsec. The # corrections are listed for five different wavelength ranges. # # Halfwidth Halfwidth Flux/Flux(0.5") Flux/Flux(0.5") Flux/Flux(0.5") Flux/Flux(0.5") Flux/Flux(0.5") # (pixels) (arcsec) [550-650 nm] [650-750 nm] [750-850 nm] [850-950 nm] [950-1050 nm] # 2 0.100 0.825 0.814 0.793 0.750 0.637 3 0.150 0.912 0.907 0.896 0.865 0.765 4 0.200 0.946 0.943 0.937 0.920 0.839 5 0.250 0.965 0.962 0.958 0.946 0.883 6 0.300 0.978 0.976 0.972 0.963 0.917 8 0.400 0.991 0.991 0.991 0.987 0.964 10 0.500 1.000 1.000 1.000 1.000 1.000 12 0.600 1.006 1.006 1.007 1.009 1.027 14 0.700 1.011 1.011 1.012 1.015 1.047 16 0.800 1.015 1.015 1.017 1.021 1.066 18 0.900 1.017 1.018 1.020 1.025 1.080 20 1.000 1.019 1.020 1.023 1.028 1.094 22 1.100 1.021 1.022 1.025 1.031 1.105 24 1.200 1.023 1.023 1.027 1.034 1.115 26 1.300 1.025 1.025 1.029 1.036 1.120 28 1.400 1.026 1.026 1.030 1.038 1.128 30 1.500 1.028 1.027 1.031 1.039 1.136 35 1.750 1.031 1.031 1.034 1.042 1.150 40 2.000 1.034 1.033 1.037 1.045 1.160