- Title
- Vis-NIR reflectance spectra of Bordezac pigments (Pig_0160_D): blocks, powders, plots and painted matters
- DOI
- 10.26302/SSHADE/EXPERIMENT_BS_20200422_100
- Data reference
- Schmitt, Bernard; Chalmin-Aljanabi, Emilie; Chassin de Kergommeaux, Aurélie (2019): Vis-NIR reflectance spectra of Bordezac pigments (Pig_0160_D): blocks, powders, plots and painted matters. SSHADE/PIG (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20200422_100
- Comments
- partly published
- Database(s)
- Experimentalists
- Type(s)
- laboratory measurement
- Description
- Vis-NIR reflectance spectra of Bordezac pigments (Pig_0160_D) as 2 raw blocks and 1 sawn (2 faces each), as a powder with grain sizes < 160 µm (2 densities: 0.91 and 1.53 g/cm3), as a polished plot and a painted matter on limestone
- Number of spectra
- 10
- Variable type(s)
-
- sample texture
- Comments
- 3 blocks, 2 powders (grain sizes and density), 1 polished plot, 1 painted matter
- Instrument
- SHADOWS Spectro-Gonio bidirectional reflection Vis-NIR
- Sample holder
- cylindrical aluminium sample holders of various sizes for powder
- 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 #1 362.0 - 666.0 4.0 1.9 0.25 #2 670.0 - 1598.0 4.0 3.8 0.5 #3 1602.0 - 2834.0 4.0 7.6 0.5 #4 2842.0 - 4186.0 8.0 15.5 1.0 - Filters
-
Type Center/Edge ($nm$) Width ($nm$) Place #1 several high frequency filters output of monochromator
Definition: incidence and emergence angles are positive with origin at nadir, and vary in same direction. Azimuth origin (increasing clockwise) is for i = e (opposition geometry).
- 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 holder (D=18mm, d=4.5mm) for powder
- 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 #1 402.0 - 598.0 4.0 0.96 0.1 #2 602.0 - 1426.0 4.0 3.8 0.4 #3 1430.0 - 3198.0 4.0 7.6 0.8 #4 3202.0 - 4802.0 8.0 15.5 1.6 - Filters
-
Type Center/Edge ($nm$) Width ($nm$) Place #1 several high frequency filters output of monochromator
Definition: incidence and emergence angles are positive with origin at nadir, and vary in same direction. Azimuth origin (increasing clockwise) is for i = e (opposition geometry).
- 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 - 2020-10-16
Versions
- Release date
- 2021-03-30 21:05:58 UTC+0000
- Version (Date)
- #2 (2021-03-30 21:05:58 UTC+0000, Updated: 2021-05-08 14:16:39 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)