Vis-NIR reflectance spectrum of Huy pigment (PIG_0172_A_903) painted on limestone block
- Title
- Vis-NIR reflectance spectrum of Huy pigment (PIG_0172_A_903) painted on limestone block
- DOI
- 10.26302/SSHADE/EXPERIMENT_BS_20200813_100
- Data reference
- Schmitt, Bernard; Chalmin-Aljanabi, Emilie; Chassin de Kergommeaux, Aurélie (2019): Vis-NIR reflectance spectra of Huy pigments (PIG_0172_A): blocks, powders, plots and painted matters. SSHADE/PIG (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20200813_100
- Publications
-
- Comments
- unpublished
- Database
- Experimentalists
- Experiment type
- laboratory measurement
- Type
- reflectance factor
- Instrument
- SHINE Spectro-Gonio bidirectional reflection Vis-NIR
- Sample holder
- cylindrical aluminium sample holder 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 #1 422.0 - 598.0 4.0 0.96 0.1 #2 602.0 - 1426.0 4.0 3.8 0.4 #3 1430.0 - 2834.0 4.0 7.6 0.4 #4 2842.0 - 4202.0 8.0 15.5 0.8 - Filters
-
Type Center/Edge ($nm$) Width ($nm$) Place #1 several high frequency filters output of monochromator - Scan number
- 10
- Comments
- measured over the 402-4202nm range
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
- 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
- Experiment
- Vis-NIR reflectance spectra of Huy pigments (PIG_0172_A): blocks, powders, plots and painted matters
- Date begin
- 2020-02-11
- Date end
- 2020-10-20
- Release date
- 2021-04-02 06:51:08 UTC+0000
- Version (Date)
- #1 (2021-04-02 06:51:08 UTC+0000, Updated: 2022-11-07 07:51:59 UTC+0000)
- History
-
Date Mode Version Status Comments 2020-08-15 14:28:19 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 (0.4-1.3µm) and 2) with "Infragold" using its relative spectral reflectance (1.3-4.8µm). A very slight smoothing (binomial over 3 points) has been applied. The noisy flat 0.44-0.46µm part is strongly smoothed and extrapolated. The very noisy part of the spectrum above 4.2µm has been removed. The noisy part between 3.2 and 4.2µm is not very reliable (problem with grating #4).
- Quality flag
- 3
- Validator(s)
