Experiment
Title
Vis-NIR reflectance spectra of Roussillon pigments (PIG_0173_A): raw blocks, powders with different grain sizes and painted matter
DOI
10.26302/SSHADE/EXPERIMENT_BS_20191012_400
Data reference
Schmitt, Bernard; Chalmin-Aljanabi, Emilie; Chassin de Kergommeaux, Aurélie (2019): Vis-NIR reflectance spectra of Roussillon pigments (PIG_0173_A): raw blocks, powders with different grain sizes and painted matter. SSHADE/PIG (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20191012_400
Comments
partly published
Type(s)
laboratory measurement
Description
Vis-NIR reflectance spectra of Roussillon pigments (PIG_0173_A) as 4 raw blocks and 1 sawn, as powders with several grain sizes (<50µm, <160 µm, 100-200µm, 200-400µm, >400µm) and several densities, as a polished plot, and a painted matter on limestone
Number of spectra
15
Variable type(s)
  • sample texture
  • sample grain size
Comments
4 raw blocks, 1 sawn block, 9 powders (grain sizes and density), 1 polished plot, 1 painted matter
Instrument
SHADOWS Spectro-Gonio bidirectional reflection Vis-NIR
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
#1 361.99999999999983 - 666.0000000000005 4.0 1.9 0.25
#2 669.999999999998 - 1597.9999999999995 4.0 3.8 0.5
#3 1601.9999999999993 - 2833.9999999999964 4.0 7.6 0.5
#4 2842.000000000002 - 4186.0000000000055 8.0 15.5 1.0
Filters
Type Center/Edge ($nm$) Width ($nm$) Place
#1 several high frequency filters output of monochromator
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
Spatial resolution
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)
Vis, NIR
Valid spectral range(s)
Min - Max ($nm$) Sampling ($nm$) Resolution ($nm$) Position accuracy ($nm$) Absorption edge
#1 401.9999999999993 - 598.0000000000018 4.0 0.96 0.25
#2 602.0000000000007 - 1426.0000000000011 4.0 3.8 0.5
#3 1430.0000000000002 - 3198.0000000000014 4.0 7.6 1.0
#4 3202.0000000000014 - 4802.000000000003 8.0 15.5 2.0
Filters
Type Center/Edge ($nm$) Width ($nm$) Place
#1 several high frequency filters output of monochromator
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
Spatial resolution
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
Date begin - end
2019-10-03 - 2020-10-23

Versions

Release date
2021-04-05 11:24:45 UTC+0000
Version (Date)
#2 (2021-04-05 11:24:45 UTC+0000, Updated: 2021-05-08 15:05:28 UTC+0000)
Older version(s)
Sponsors
  • Université de Savoie-Mont-Blanc (USMB) (MASCARA 2 et TRAnSFeRT)
  • Service Régional de l’Archéologie de la région Auvergne Rhône Alpes (SRA)