Experiment
Title
Vis-NIR BRDF (principal plane) of Phobos regolith simulants OPPS and UTPS-TB
DOI
10.26302/SSHADE/EXPERIMENT_OP_20240717_002
Data reference
Wargnier, Antonin; Poch, Olivier; Beck, Pierre (2023): Vis-NIR BRDF (principal plane) of Phobos regolith simulants OPPS and UTPS-TB. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_OP_20240717_002
Publications
Type(s)
laboratory measurement
Description
Vis-NIR (0.6-3.6 µm) reflectance spectra (i=0-60°, az=0°, and phase angles from 5 to 130°) acquired with the SHADOWS instrument of mixtures of phyllosilicates, coals or carbon and other minerals used as a Phobos regolith simulant. Observatory of Paris Phobos Simulant OPPS (mixture of saponite, coals and olivine powders) and University of Tokyo Phobos Simulant, Tagish Lake based, UTPS-TB (powder mixture of serpentinite and other minerals)
Number of spectra
2
Variable type(s)
  • illumination-observation geometry
Comments
Spectra were measured at different phase angles from 5° to 130°, in the scattering plane, also called the principal plane.
Instrument
SHADOWS Spectro-Gonio bidirectional reflection Vis-NIR
Sample holder
open rectangular sample holder (14 mm long, 7 mm wide, 1 mm deep) in anodized aluminum
Standard medium
air
Observation mode
spectrum
Spectral range type(s)
Vis, NIR
Valid spectral range(s)
Min - Max (${\mu}m$) Sampling (${\mu}m$) Resolution (${\mu}m$) Position accuracy (${\mu}m$) Absorption edge
#1 0.6 - 0.68 0.02 0.003
#2 0.7 - 1.58 0.02 0.006
#3 1.6 - 2.82 0.02 0.013
#4 2.84 - 3.6 0.02 0.026
Observation geometry
bidirectional
Observation mode
two variable angles
Illumination
Observation
Comments
partial polarization variable with wavelength (from monochromator grating)
Observation mode
single spot
Image size
5.2 x 5.2 $mm$
Date begin
2023-06-20

Versions

Release date
2024-08-19 09:57:16 UTC+0000
Version (Date)
#2 (2024-08-19 09:57:16 UTC+0000, Updated: 2024-08-19 10:08:09 UTC+0000)
Older version(s)
Sponsors
  • Centre National d’Etudes Spatiales (CNES) (Scientific support of the MIRS instrument onboard the MMX mission)