Multiangular reflectance of Hawaii basaltic sand in 5 visible spectral bands for 6 different grain sizes | PaSSTEL

Experiment

Title: Multiangular reflectance of Hawaii basaltic sand in 5 visible spectral bands for 6 different grain sizes

DOI

10.26302/SSHADE/EXPERIMENT_YD_20220407_010

Data reference

Daydou, Yves (2007): Multiangular reflectance of Hawaii basaltic sand in 5 visible spectral bands for 6 different grain sizes. SSHADE/PaSSTEL (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_YD_20220407_010

Publications

Owner

Database(s)

PaSSTEL

Experimentalists

Yves Daydou

Spectra preview

Experiment type

Type(s): laboratory measurement
Description: Multiangular reflectance (23 angular configurations) in 5 visible spectral bands (0.56, 0.70, 0.79, 0.88, 0.96 µm) and for 6 different grain size ranges C1 to C6 (45-75, 75-125, 125-250, 250-500, 500-1000, 1000-2000 µm)
Number of spectra: 6

Variable parameters

Variable type(s)

illumination-observation geometry
sample grain size

Location

Laboratory: Institut de Recherche en Astrophysique et Planétologie (IRAP)

Instrument #1

Instrument: ISEP narrow-band filters imaging - bidirectional reflection Vis-NIR

Spectral parameters

Standard medium

vacuum

Observation mode

multi wavelengths

Spectral range type(s)

Vis

Valid spectral range(s)

	Min - Max ( ${\mu}m$ )	Sampling ( ${\mu}m$ )	Resolution ( ${\mu}m$ )	Position accuracy ( ${\mu}m$ )	Absorption edge
#1	0.45 - 1.05

Filters

	Type	Center/Edge ( ${\mu}m$ )	Width ( ${\mu}m$ )
#1	narrow bandpass	0.559	0.01
#2	narrow bandpass	0.699	0.01
#3	narrow bandpass	0.791	0.01
#4	narrow bandpass	0.88	0.01
#5	narrow bandpass	0.96	0.01

Comments

5 filters from 0.559 to 0.960 µm

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: three variable angles

Comments: incidence 10 to 60°, emergence 0 to 70°, azimuth 0, 135, 180, 270, 315°, phase 25 to 130°

Spatial parameters

Observation mode: roi averaged

History

Date begin - end: 2007-03-30 - 2009-09-30

Versions

Release date: 2022-05-17 13:32:19+0000 UTC
Version (Date): #1 (2022-05-17 13:32:19+0000 UTC, Updated: 2022-05-17 13:32:19+0000 UTC)