Astronauts on long-duration lunar missions will need the capability to high-grade their samples to select the highest value samples for transport to Earth and to leave others on the Moon. We are supporting studies to define the necessary and sufficient measurements and techniques for high-grading samples at a lunar outpost. A glovebox, dedicated to testing instruments and techniques for high-grading samples, is in operation at the JSC Lunar Experiment Laboratory. A reference suite of lunar rocks and soils, spanning the full compositional range found in the Apollo collection, is available for testing in this laboratory. Thin sections of these samples are available for direct comparison. The Lunar Sample Compendium, on-line at http://www-curator.jsc.nasa.gov/lunar/compendium.cfm, summarizes previous analyses of these samples. The laboratory, sample suite, and Compendium are available to the lunar research and exploration community. In the first test of possible instruments for lunar sample high-grading, we imaged 18 lunar rocks and four soils from the reference suite using the Multispectral Microscopic Imager (MMI) developed by Arizona State University and JPL (see Farmer et. al. abstract). The MMI is a fixed-focus digital imaging system with a resolution of 62.5 microns/pixel, a field size of 40 x 32 mm, and a depth-of-field of approximately 5 mm. Samples are illuminated sequentially by 21 light emitting diodes in discrete wavelengths spanning the visible to shortwave infrared. Measurements of reflectance standards and background allow calibration to absolute reflectance. ENVI-based software is used to produce spectra for specific minerals as well as multi-spectral images of rock textures.


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    Titel :

    High-Grading Lunar Samples


    Beteiligte:
    Allen, Carlton (Autor:in) / Sellar, Glenn (Autor:in) / Nunez, Jorge (Autor:in) / Mosie, Andrea (Autor:in) / Schwarz, Carol (Autor:in) / Parker, Terry (Autor:in) / Winterhalter, Daniel (Autor:in) / Farmer, Jack (Autor:in)

    Kongress:

    Lunar Science Forum ; 2009 ; Moffett Field, CA, United States


    Erscheinungsdatum :

    2009-07-21


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    High-Grading Lunar Samples for Return to Earth

    Allen, Carlton / Sellar, Glenn / Nunez, Jorge et al. | NTRS | 2009


    Simulation of Autonomous Grading of Lunar Surface

    Bettemir, Onder Halis | IEEE | 2023



    Co-60 in lunar samples.

    Wahlen, M. / Finkel, R. C. / Imamura, M. et al. | NTRS | 1973


    Microbial assay of lunar samples

    Ellis, W. / Groves, T. / Johnson, P. H. et al. | NTRS | 1971