Fig. 1
Transient detection efficiency as a function of magnitude for the r-band observation of COSMOS on 2012 March 15. The dots are the averages of 3 artificial star experiments with the errorbar being the dispersion whereas the line is the adopted efficiency curve after the fit with the Eq. (1) (DEmax = 93%, mag50 = 23.0 mag, and β = 6.1).
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