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Crumey (2014) https://doi.org/10.1093/mnras/stu992 Fig. 3. Threshold increment versus background luminance for various target diameters (in arcmin). Data from tables 4 and 8 of
Blackwell (1946).
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Fig. 3. Threshold increment versus background luminance for various target diameters (in arcmin). Data from tables 4 and 8 of
Blackwell (1946).
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