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The Oxford space environment goniometer: A new experimental setup for making directional emissivity measurements under a simulated space environment

dc.contributor.authorWarren, T.J.
dc.contributor.authorBowles, N.E.
dc.contributor.authorDonaldson Hanna, K.
dc.contributor.authorThomas, I.R.
dc.date2017
dc.date.accessioned2018-01-02T11:07:45Z
dc.date.available2018-01-02T11:07:45Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/6359
dc.descriptionMeasurements of the light scattering behaviour of the regoliths of airless bodies via remote sensing techniques in the Solar System, across wavelengths from the visible to the far infrared, are essential in understanding their surface properties. A key parameter is knowledge of the angular behaviour of scattered light, usually represented mathematically by a phase function. The phase function is believed to be dependent on many factors including the following: surface composition, surface roughness across all length scales, and the wavelength of radiation. Although there have been many phase function measurements of regolith analog materials across visible wavelengths, there have been no equivalent measurements made in the thermal infrared (TIR). This may have been due to a lack of TIR instruments as part of planetary remote sensing payloads. However, since the launch of Diviner to the Moon in 2009, OSIRIS-Rex to the asteroid Bennu in 2016, and the planned launch of BepiColombo to Mercury in 2018, there is now a large quantity of TIR remote sensing data that need to be interpreted. It is therefore important to extend laboratory phase function measurements to the TIR. This paper describes the design, build, calibration, and initial measurements from a new laboratory instrument that is able to make phase function measurements of analog planetary regoliths across wavelengths from the visible to the TIR.
dc.languageeng
dc.titleThe Oxford space environment goniometer: A new experimental setup for making directional emissivity measurements under a simulated space environment
dc.typeArticle
dc.subject.frascatiPhysical sciences
dc.audienceScientific
dc.subject.freeLaboratories
dc.subject.freeLight scattering
dc.subject.freeSpace optics
dc.subject.freeSurface roughness
dc.subject.freeDirectional emissivity
dc.subject.freeEquivalent measurement
dc.subject.freePlanetary regolith
dc.subject.freePlanetary remote sensing
dc.subject.freeRemote sensing data
dc.subject.freeRemote sensing techniques
dc.subject.freeSpace environment
dc.subject.freeVisible wavelengths
dc.subject.freeRemote sensing
dc.source.titleReview of Scientific Instruments
dc.source.volume88
dc.source.issue12
dc.source.pageA124502
Orfeo.peerreviewedYes
dc.identifier.doi10.1063/1.4986657
dc.identifier.scopus2-s2.0-85038395055


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