Spectrum

Bidirectional Vis-NIR reflectance spectra of 95%-N2:5%-CH4:500ppm-CO tholins at various illumination-observation geometries (i=0°,30°,60° - e= -70° to 70°)

Title
Bidirectional Vis-NIR reflectance spectra of 95%-N2:5%-CH4:500ppm-CO tholins at various illumination-observation geometries (i=0°,30°,60° - e= -70° to 70°)
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Angular geometry
All geometries
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Single geometry:
Data
Unit:  Range: Valid spectral range(s): 4000.0 - 25000.0 nm
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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
Publications
Database
Experimentalists
Spectrum type
Experiment type
laboratory measurement
Type
reflectance factor
Intensity unit
no unit
Instrument #1
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
#1 400.0 - 660.0 20.0 4.8 0.5
#2 680.0 - 1420.0 20.0 9.6 1.0
#3 1440.0 - 2500.0 20.0 19.2 2.0
Scan number
10
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 $mm$
Number of geometries
42
Incidence Emergence Azimuth Phase
0.0° -70.0° 0.0° 70.0°
0.0° -60.0° 0.0° 60.0°
0.0° -50.0° 0.0° 50.0°
0.0° -40.0° 0.0° 40.0°
0.0° -30.0° 0.0° 30.0°
0.0° -20.0° 0.0° 20.0°
0.0° -10.0° 0.0° 10.0°
0.0° 10.0° 0.0° 10.0°
0.0° 20.0° 0.0° 20.0°
0.0° 30.0° 0.0° 30.0°
0.0° 40.0° 0.0° 40.0°
0.0° 50.0° 0.0° 50.0°
0.0° 60.0° 0.0° 60.0°
0.0° 70.0° 0.0° 70.0°
30.0° -70.0° 0.0° 100.0°
30.0° -60.0° 0.0° 90.0°
30.0° -50.0° 0.0° 80.0°
30.0° -40.0° 0.0° 70.0°
30.0° -20.0° 0.0° 50.0°
30.0° -10.0° 0.0° 40.0°
30.0° 0.0° 0.0° 30.0°
30.0° 10.0° 0.0° 20.0°
30.0° 20.0° 0.0° 10.0°
30.0° 30.0° 0.0° 0.0°
30.0° 40.0° 0.0° 10.0°
30.0° 50.0° 0.0° 20.0°
30.0° 60.0° 0.0° 30.0°
30.0° 70.0° 0.0° 40.0°
60.0° -70.0° 0.0° 130.0°
60.0° -50.0° 0.0° 110.0°
60.0° -40.0° 0.0° 100.0°
60.0° -30.0° 0.0° 90.0°
60.0° -20.0° 0.0° 80.0°
60.0° -10.0° 0.0° 70.0°
60.0° 0.0° 0.0° 60.0°
60.0° 10.0° 0.0° 50.0°
60.0° 20.0° 0.0° 40.0°
60.0° 30.0° 0.0° 30.0°
60.0° 40.0° 0.0° 20.0°
60.0° 50.0° 0.0° 10.0°
60.0° 60.0° 0.0° 0.0°
60.0° 70.0° 0.0° 10.0°
Name
Tholins LATMOS 95%-N2:5%-CH4:500ppm-CO
Experiment
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
Date begin
2018-08-14
Date end
2018-08-15
Release date
2021-06-02 08:37:16 UTC+0000
Version (Date)
#1 (2021-06-02 08:37:16 UTC+0000, Updated: 2021-06-02 08:37:16 UTC+0000)
History
Date Mode Version Status Comments
2020-12-31 20:33:56 UTC+0000 first import #1 valid version
Analysis
raw bidirectional reflectance spectrum calibrated: 1) with "Spectralon 99%" measured under same geometry using its absolute BRDF (0.4-2.1µm) and 2) with "Infragold" using its relative spectral reflectance (2.1-2.5µm). The 1360 and 1380nm have been removed due to spurious effects on some spectra.
Quality flag
4
Validator(s)