Spectrum

Vis-NIR reflectance spectrum of La Rousse pigment (PIG-0183-2017), polished slice, face 2, spot #2

Title
Vis-NIR reflectance spectrum of La Rousse pigment (PIG-0183-2017), polished slice, face 2, spot #2
DOI
10.26302/SSHADE/EXPERIMENT_BS_20200217_100
Data reference
Schmitt, Bernard; Chalmin-Aljanabi, Emilie (2019): Vis-NIR reflectance spectra of La Rousse pigments (PIG-0183-2017): powder, raw block, and polished slice. SSHADE/PIG (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20200217_100
Experiment type
laboratory measurement
Type
reflectance factor
Instrument
SHADOWS Spectro-Gonio bidirectional reflection Vis-NIR
Standard medium
vacuum
Observation mode
spectrum
Spectral range type(s)
Vis
Valid spectral range(s)
Min - Max ($nm$) Sampling ($nm$) Resolution ($nm$) Position accuracy ($nm$) Absorption edge
#1 402.0 - 678.0 4.0 3.2 0.15
#2 682.0 - 998.0 4.0 6.45 0.3
Filters
Type Center/Edge ($nm$) Width ($nm$) Place
#1 several high frequency filters output of monochromator
Scan number
10
Comments
measured over the 362-998nm range
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°
Illumination
Observation
Comments
some wavelength dependent polarization
Observation mode
single spot
Resolutions
5.2 ${\pm}$ 0.1 $mm$
Comments
illumination with 8 fiber optic spots within a 5.2 mm diameter, observation within an ellipse of 23x20 mm
Instrument
SHINE Spectro-Gonio bidirectional reflection Vis-NIR
Sample holder
cylindrical raw aluminium sample holders of different sizes and depths
Standard medium
vacuum
Observation mode
spectrum
Spectral range type(s)
NIR
Valid spectral range(s)
Min - Max ($nm$) Sampling ($nm$) Resolution ($nm$) Position accuracy ($nm$) Absorption edge
#1 1002.0 - 1426.0 4.0 3.8 0.2
#2 1430.0 - 3002.0 4.0 7.6 0.4
Filters
Type Center/Edge ($nm$) Width ($nm$) Place
#1 several high frequency filters output of monochromator
Scan number
10
Comments
measured over the 602-3002nm range
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°
Illumination
Observation
Comments
some wavelength dependent polarization
Observation mode
single spot
Resolutions
7.5 ${\pm}$ 0.2 $mm$
Comments
illumination with 9 fiber optic spots within 7.5 mm diameter, observation within an ellipse of 23x20 mm
Name
Pigment La Rousse (PIG-0183-2017), red crinoidal limestone - polished slice
Comments
measured on face 2, on the red part (top), with one white inclusions (spot #2)
Primary material(s)
Experiment
Vis-NIR reflectance spectra of La Rousse pigments (PIG-0183-2017): powder, raw block, and polished slice
Date begin
2019-12-18
Release date
2020-08-28 04:47:54 UTC+0000
Version (Date)
#1 (2020-08-28 04:47:54 UTC+0000, Updated: 2020-08-28 04:47:54 UTC+0000)
History
Date Mode Version Status Comments
2020-05-31 19:13:10 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 (0.36-1.30µm) and 2) with "Infragold" using its relative spectral reflectance (1.30-3.0µm). No subtraction of the residual H2O absorption bands has been applied.
Quality flag
4
Validator(s)