Fig. 8 | Space Science Reviews

Fig. 8

From: Mars Mineralogical Spectrometer (MMS) on the Tianwen-1 Mission

Fig. 8

Sketch map of the auxiliary two-dimensional slit. A to E stand for field points. Here, \(a\) equals to one pixel size, \(b\) and \(c\) are given appropriate values as needed. The difference between the auxiliary two-dimensional slit and the formal slit is that auxiliary slit has sub-slits along the spatial and spectral dimensions. In that case, the spectral response of IFOV and the spatial response of monochromatic spectrum can be monitored by auxiliary slit, for quick-adjusting of gratings and detectors

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