Fig. 5From: Heliocentric distance dependence of zodiacal light observed by Hayabusa2#Dark-current estimation. A histogram of the first bias-subtracted optical-black image, \(Wb_1(x,y)-Bb(x,y)\), obtained on 2022-08-29 (black) and its best-fit Gaussian function (red). We obtained the dark current as \({I_{\text {dark}}^{W_1}}=5.92\)Â DN from the peak position of this histogramBack to article page