Table 4 Specifications of the OSU

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

Parameters V-NIR N-MIR
Scan type Push-broom Push-broom
Spectral range 0.4–1.1 μm 1.0–3.4 μm
Spectral sampling 2.73 nm 7.50 nm
Bands 256 320
Working F/number 2.96 2.84
Cross-track FOV 12 12
IFOV 0.5 mrad 0.5 mrad
Slit width 31 μm 31 μm
Spectrometer magnification −0.845× −0.8125×
Detector array size 512a × 256 (binned) 512a × 320
Detector pixel size 26 μm square (binned) 25 μm square
  1. aSpatial dimensions of the two detectors are utilised for imaging as well as radiation calibration; 416 elements are for spatial imaging and the remaining 96 elements are for radiation calibration