Vis-NIR reflectance spectra of a cut section of NWA4766 (i=0°, a=0°, e=-30°)
- Title
- Vis-NIR reflectance spectra of a cut section of NWA4766 (i=0°, a=0°, e=-30°)
- DOI
- 10.26302/SSHADE/EXPERIMENT_LB_20210517_001
- Data reference
- Mandon, Lucia; Beck, Pierre (2018): Vis-NIR reflectance spectra of a powdered and a cut section of NWA4766 (basaltic shergottite) at various observational geometries. SSHADE/ROMA+GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_LB_20210517_001
- Publications
- Database
- Experimentalists
- Experiment type
- laboratory measurement
- Type
- reflectance factor
- Instrument
- SHADOWS Spectro-Gonio bidirectional reflection Vis-NIR
- Sample holder
- open sample holder (13 mm diameter, 2 mm deep) in anodized aluminum (not blackened) for powdered NWA4766 and flat sample holder in anodized aluminum for cut section of NWA4766
- 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 #1 360.0 - 600.0 20.0 4.8 #2 700.0 - 1400.0 20.0 8.0 #3 1500.0 - 3000.0 20.0 4.0 - Scan number
- 1
- Comments
- measurements over the 360 - 3000 nm 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
- three variable angles
- Resolution illumination
- 2.9°
- Resolution observation
- 2.05°
Illumination
Observation
- Comments
- partial polarization variable with wavelength (from monochromator grating)
- Observation mode
- single spot
- Image size
- 5.2 x 5.2 $mm$
- Experiment
- Vis-NIR reflectance spectra of a powdered and a cut section of NWA4766 (basaltic shergottite) at various observational geometries
- Date begin
- 2018-04-01
- Release date
- 2021-05-19 13:59:21 UTC+0000
- Version (Date)
- #1 (2021-05-19 13:59:21 UTC+0000, Updated: 2021-05-19 13:59:21 UTC+0000)
- History
-
Date Mode Version Status Comments 2021-05-18 17:21:59 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 (0.4-2.1µm) and 2) with "Infragold" using its relative spectral reflectance (2.1-2.6µm)
- Quality flag
- 3