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Fig. 3

image

Shear estimates gout measured by SNAPG on images with well resolved (left) and barely resolved (right) galaxies of S/N ≈ 100 compared to the input shears gtrue of the images. Each datapoint is the shear estimated from the 10 000 isolated galaxies on an image. The text in the figures shows the multiplicative bias m and the additive bias c of the measurement obtained from the best linear fit shown in black. The potential of SNAPG as a shear measurement method is clear as the true shears can be recovered to an accuracy of less than one part per thousand.

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