Vis-NIR BRDF (principal plane) of Observatory of Paris Phobos Simulant OPPS (mixture of saponite, coals and olivine powders)
- Title
- Vis-NIR BRDF (principal plane) of Observatory of Paris Phobos Simulant OPPS (mixture of saponite, coals and olivine powders)
- DOI
- 10.26302/SSHADE/EXPERIMENT_OP_20240717_002
- Data reference
- Wargnier, Antonin; Poch, Olivier; Beck, Pierre (2023): Vis-NIR BRDF (principal plane) of Phobos regolith simulants OPPS and UTPS-TB. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_OP_20240717_002
- Publications
- Database
- Experimentalists
- Experiment type
- laboratory measurement
- Type
- reflectance factor
- Instrument
- SHADOWS Spectro-Gonio bidirectional reflection Vis-NIR
- Sample holder
- open rectangular sample holder (14 mm long, 7 mm wide, 1 mm deep) in anodized aluminum
- Standard medium
- air
- Observation mode
- spectrum
- Spectral range type(s)
- Vis, NIR
- Valid spectral range(s)
-
Min - Max (${\mu}m$) Sampling (${\mu}m$) Resolution (${\mu}m$) Position accuracy (${\mu}m$) Absorption edge #1 0.6 - 0.68 0.02 0.003 #2 0.7 - 1.58 0.02 0.006 #3 1.6 - 2.82 0.02 0.013 #4 2.84 - 3.6 0.02 0.026 - Scan number
- 1
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
- two variable angles
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
- 31
| Incidence | Emergence | Azimuth | Phase |
|---|---|---|---|
| 0.0° | 5.0° | 0.0° | 5.0° |
| 0.0° | 10.0° | 0.0° | 10.0° |
| 0.0° | 20.0° | 0.0° | 20.0° |
| 0.0° | 40.0° | 0.0° | 40.0° |
| 0.0° | 60.0° | 0.0° | 60.0° |
| 0.0° | 70.0° | 0.0° | 70.0° |
| 0.0° | 80.0° | 0.0° | 80.0° |
| 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° | 40.0° | 0.0° | 10.0° |
| 30.0° | 60.0° | 0.0° | 30.0° |
| 60.0° | 0.0° | 0.0° | 60.0° |
| 60.0° | 10.0° | 0.0° | 50.0° |
| 60.0° | 30.0° | 0.0° | 30.0° |
| 60.0° | 50.0° | 0.0° | 10.0° |
| 60.0° | 70.0° | 0.0° | 10.0° |
| 0.0° | 5.0° | 180.0° | 5.0° |
| 0.0° | 10.0° | 180.0° | 10.0° |
| 0.0° | 20.0° | 180.0° | 20.0° |
| 0.0° | 40.0° | 180.0° | 40.0° |
| 0.0° | 60.0° | 180.0° | 60.0° |
| 0.0° | 70.0° | 180.0° | 70.0° |
| 30.0° | 10.0° | 180.0° | 40.0° |
| 30.0° | 20.0° | 180.0° | 50.0° |
| 30.0° | 40.0° | 180.0° | 70.0° |
| 30.0° | 60.0° | 180.0° | 90.0° |
| 60.0° | 10.0° | 180.0° | 70.0° |
| 60.0° | 30.0° | 180.0° | 90.0° |
| 60.0° | 50.0° | 180.0° | 110.0° |
| 60.0° | 70.0° | 180.0° | 130.0° |
- Experiment
- Vis-NIR BRDF (principal plane) of Phobos regolith simulants OPPS and UTPS-TB
- Date begin
- 2023-06-23
- Release date
- 2024-08-19 10:10:34 UTC+0000
- Version (Date)
- #1 (2024-08-19 10:10:34 UTC+0000, Updated: 2024-08-19 10:10:34 UTC+0000)
- History
-
Date Mode Version Status Comments 2024-08-19 09:57:16 UTC+0000 first import #1 valid version
- Analysis
- bidirectional reflectance spectra calibrated: 1) with "Spectralon 99%" measured under geometry i=0° e=30° using its absolute BRDF (0.6-1.3µm) and 2) with "Infragold" using its relative spectral reflectance (1.3-3.6µm). The Spectralon was considered to have the same deviation from a perfectly Lambertian surface at i=0° e=30° and at all the other geometries measured here, which are not extreme. The spectrum is affected by the water vapour of the air in the optical path between the light source, sample, and infrared detector. Residual water vapor lines (between 1.30-1.45 µm, 1.80-1.95 µm and 2.50-2.9 µm) can be observed.
- Quality flag
- 3