Bidirectional Vis-NIR reflectance spectra at 3 phase angles (i=0°, e=10°, 20°, 30°) of 72 powders of bulk meteorites (CI, CM, CO, CR, CV, OC, EL, R, HED, mesosiderites) | GhoSST

Experiment

Title: Bidirectional Vis-NIR reflectance spectra at 3 phase angles (i=0°, e=10°, 20°, 30°) of 72 powders of bulk meteorites (CI, CM, CO, CR, CV, OC, EL, R, HED, mesosiderites)

DOI

10.26302/SSHADE/EXPERIMENT_LB_20200902_001

Data reference

Beck, Pierre (2019): Bidirectional Vis-NIR reflectance spectra at 3 phase angles (i=0°, e=10°, 20°, 30°) of 72 powders of bulk meteorites (CI, CM, CO, CR, CV, OC, EL, R, HED, mesosiderites). SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_LB_20200902_001

Publications

Beck et al., 2020, Icarus, 254, 114066

Owner

Database(s)

GhoSST

Experimentalists

Pierre Beck

Spectra preview

Experiment type

Type(s): laboratory measurement
Description: Bidirectional Vis-NIR reflectance spectra [400 - 2500 nm, sampling 100 nm] at 3 phase angles (i=0°, e=10°, 20°, 30°) of 72 bulk powdered meteorites (CI, CM, CO, CR, CV, OC, EL, R, HED, mesosiderites)
Number of spectra: 60

Variable parameters

Variable type(s)

sample composition

Location

Laboratory: Institut de Planétologie et Astrophysique de Grenoble (IPAG)

Instrument #1

Instrument: SHADOWS Spectro-Gonio bidirectional reflection Vis-NIR
Sample holder: open sample holder (13 mm diameter, 2 mm deep) in anodized aluminum (not blackened)

Spectral parameters

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 ($nm$)
#1	400.0 - 600.0	100.0	4.0	0.5
#2	700.0 - 1400.0	100.0	8.0	1.0
#3	1500.0 - 2600.0	100.0	16.0	2.0

Angular parameters

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: one variable angle
Resolution illumination: 5.8°
Resolution observation: 1.8°

Comments: a diaphragm of 20mm is used in front of the detectors to reduce the angular resolution to $\pm 0.8°$

Polarization parameters

Illumination

Observation

Comments: partial polarization variable with wavelength (from monochromator grating)

Spatial parameters

Observation mode: single spot
Image size: 5.2 x 5.2 $mm$

History

Date begin - end: 2019-02-04 - 2019-02-15

Versions

Release date: 2020-09-04 07:53:41 UTC+0000
Version (Date): #1 (2020-09-04 07:53:41 UTC+0000, Updated: 2020-09-17 13:10:48 UTC+0000)