MIR average reflectance spectra of Ryugu fragment A0064-FO023.

Spectrum

Title: MIR average reflectance spectra of Ryugu fragment A0064-FO023.

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Data

Unit: Range: Valid spectral range(s): 820.0 - 3900.0 cm-1

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References

DOI

10.26302/SSHADE/EXPERIMENT_ZED_20230921_01

Data reference

Dionnet, Zélia; Brunetto, Rosario; Rubino, Stefano (2021): MIR Average reflectance spectra of eight Ryugu fragments (chambers A and C). SSHADE/DAYSY (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_ZED_20230921_01

Publications

Dionnet et al., 2023, Meteorit. Planet. Sci., 59, 1859

Owner

Database

DAYSY

Experimentalists

Spectrum type

Experiment type: laboratory measurement
Type: reflectance factor
Intensity unit: no unit

Instrument #1

Instrument: SMIS Cary 670 - trans Mid-IR
Sample holder: The sample was mounted at the end of a metallic needle which hold the sample horizontally.

Spectral parameters

Standard medium

vacuum

Observation mode

spectrum

Spectral range type(s)

MIR

Valid spectral range(s)

	Min - Max ($cm^{-1}$)	Sampling ($cm^{-1}$)	Resolution ($cm^{-1}$)	Position accuracy ($cm^{-1}$)	Absorption edge
#1	820.0 - 3900.0	4.0	4.0	1.0

Angular parameters

Definition: incidence and emergence angles are positive with origin at nadir. Emergence angle in transmission is larger than 90° (=180°-i).

Observation geometry: direct
Observation mode: fixed angles

Spatial parameters

Observation mode: averaged
Spots number: 81920
Objective type: x25
Pixels separation: 3.3 x 3.3 ${\mu}m$
Pixels number: 64 x 64
Image size: 211.0 x 211.0 ${\mu}m$
Comments: 20 successive hyper-spectral measurements, with rotations of the horizontal needles holding the sample, were acquired. For each angle, pixels contained inside the sample were isolated and averaged to obtain preliminary average spectra. Then, the 20 preliminary average spectra were averaged to obtain the reflectance spectrum of an isolated particle.