Fig. 16
From: A low-dispersion spectral video camera for observing lunar impact flashes
The effect of the incomplete spectral flat-filed correction on a spectrum. We derived the spectra at the 2nd-frame of Flash 170201 with the four different reference points in a video frame for the spectral flat-field correction. The reference points are No. 6, 9, 8, and 5 in Fig. 14 in the increasing order of distance from the flash in a frame. The reference point for a comparison star was fixed to No. 5