MIR average reflectance spectra of Ryugu fragment C0002-FC027 : lower face - part S1. | DAYSY

Spectrum

MIR average reflectance spectra of Ryugu fragment C0002-FC027 : lower face - part S1.

Title: MIR average reflectance spectra of Ryugu fragment C0002-FC027 : lower face - part S1.

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Data

Unit: Range: Valid spectral range(s): 850.0 - 3900.0 cm-1

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DOI

10.26302/SSHADE/EXPERIMENT_ZED_20241125_01

Data reference

Dionnet, Zélia; Djouadi, Zahia (2022): MIR transmission spectra of two Ryugu fragments from chamber C. SSHADE/DAYSY (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_ZED_20241125_01

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Database

DAYSY

Experimentalists

Spectrum type

Instrument: SMIS Cary 670 - trans Mid-IR
Sample holder: The sample was crushed in a diamond compression cell, which is transparent in the IR range.

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	850.0 - 3900.0	4.0	4.0	1.0

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

Observation mode: averaged
Spots number: 16384
Objective type: x25
Pixels separation: 0.66 x 0.66 ${\mu}m$
Pixels number: 128 x 128
Image size: 84.48 x 84.48 ${\mu}m$
Comments: The resolution changes with the wavelenght according to the Abbe's equation.Average spectra was calculted over various area in sample C0002-FC027 and C0002-FC028. We removed pixels with no sample and noisy pixels from the IR hyperspectral images, by filtering the images based on the signal-to-noise ratio in the range of aliphatic CH stretching modes; we selected the spectra with a signal-to-noise ratio greater than 10