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Table 3

Value of the parameters measured directly on the data frame, affected by the effect of the PSF, and their analytical counterparts, corrected from the PSF.

System Data frame (with PSF) Analytical model

ε reff (′′) ε reff (′′)

MG0414+0534 0.118 ± 0.021 1.307 ± 0.067 0.150 ± 0.056 0.737 ± 0.096
HE0435-1223 0.143 ± 0.013 1.958 ± 0.041 0.218 ± 0.103 0.901 ± 0.071
RXJ0911+0551 0.050 ± 0.029 3.045 ± 0.311 0.128 ± 0.069 0.878 ± 0.187
SDSS0924+0219 0.054 ± 0.007 0.760 ± 0.023 0.090 ± 0.051 0.295 ± 0.044
PG1115+080 0.023 ± 0.009 1.036 ± 0.036 0.035 ± 0.169 0.433 ± 0.086
SDSS1138+0314 0.013 ± 0.015 0.754 ± 0.013 0.000 ± 0.092 0.352 ± 0.043
B1422+231 0.222 ± 0.067 0.233 ± 0.048 0.258 ± 0.105 0.114 ± 0.059

Notes. The PSF has no effect on the PA. The error bars given with the convolved parameters only come from the standard error on the mean amongst the data frames of each system, whereas the error bars of the analytical values take the systematic errors into account.

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