Experiment
Title
Bidirectional Vis-NIR reflectance spectra of two tholins samples (+ mixtures with pyrrhotite) at various illumination-observation geometries (i=0°,30°,60° - e= -70° to 70°) and their extracted single scattering albedo and optical constants spectra
DOI
10.26302/SSHADE/EXPERIMENT_BS_20201201_001
Data reference
Fayolle, Marie; Quirico, Eric; Potin, Sandra (2018): Bidirectional Vis-NIR reflectance spectra of two tholins samples (+ mixtures with pyrrhotite) at various illumination-observation geometries (i=0°,30°,60° - e= -70° to 70°) and their extracted single scattering albedo and optical constants spectra. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20201201_001
Comments
submitted
Type(s)
laboratory measurement
Description
Bidirectional Vis-NIR reflectance spectra (0.4-2.5 µm) of two tholins samples (99%-N2:1%-CH4:500ppm-CO and 95%-N2:5%-CH4:500ppm-CO) at various illumination-observation geometries (i=0°,30°,60° - e= -70° to 70°, step 10°) and their extracted single scattering albedo and optical constants spectra. Also series of 13 mixtures with pyrrhotite (from 1ppm to 5%)
Number of spectra
21
Variable type(s)
  • sample composition
  • sample abundance
  • illumination-observation geometry
  • spectrum type
Comments
4 tholins composition, 13 mixtures with pyrrhotite, 3 incidence angles, 14 emergence angles, 3 spectrum types
Instrument
SHADOWS Spectro-Gonio bidirectional reflection Vis-NIR
Sample holder
open sample holder (12 mm diameter, 6 mm deep) in anodized aluminum
Standard medium
vacuum
Observation mode
spectrum
Spectral range type(s)
Vis, NIR
Valid spectral range(s)
Min - Max ($nm$) Sampling ($nm$) Resolution ($nm$) Position accuracy ($nm$) Absorption edge
#1 399.99999999999994 - 660.000000000002 20.0 4.8 0.5
#2 679.9999999999987 - 1419.9999999999998 20.0 9.6 1.0
#3 1440.0000000000007 - 2499.9999999999995 20.0 19.2 2.0
Comments
a set of high pass filters at the monochromator output to filter the higher orders
Observation geometry
bidirectional
Observation mode
two variable angles
Resolution illumination
5.8°
Resolution observation
4.1°
Comments
angular resolution is full width
Illumination
Observation
Comments
partial polarization variable with wavelength (from monochromator grating)
Observation mode
single spot
Image size
5.2 x 5.2 $mm$
Instrument
SHINE Spectro-Gonio bidirectional reflection Vis-NIR
Sample holder
open sample holder (12 mm diameter, 6 mm deep) in anodized aluminum
Standard medium
vacuum
Observation mode
spectrum
Spectral range type(s)
Vis, NIR
Valid spectral range(s)
Min - Max ($nm$) Sampling ($nm$) Resolution ($nm$) Position accuracy ($nm$) Absorption edge
#1 679.9999999999987 - 1380.0000000000002 20.0 9.6 1.0
#2 1400.0000000000002 - 2499.9999999999995 20.0 19.2 2.0
Comments
a set of high pass filters at the monochromator output to filter the higher orders
Observation geometry
bidirectional
Observation mode
fixed angles
Incidence angle
0.0°
Emergence angle
30.0°
Azimuth angle
0.0°
Phase angle
30.0°
Resolution illumination
5.8°
Resolution observation
4.1°
Comments
angular resolution is full width
Illumination
Observation
Comments
partial polarization variable with wavelength (from monochromator grating)
Observation mode
single spot
Image size
7.5 x 7.5 $mm$
Date begin - end
2018-06-28 - 2018-08-17

Versions

Release date
2021-06-02 08:37:16 UTC+0000
Version (Date)
#1 (2020-12-31 20:33:56 UTC+0000, Updated: 2021-06-02 08:37:16 UTC+0000)
Sponsors
  • Centre National d’Etudes Spatiales (CNES) (Ralph / New Horizons)
  • Agence Nationale de la Recherche (ANR) (CLASSY)