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  • 1
    Online Resource
    Online Resource
    The Emirates Mars Mission (EMM) Emirates Mars InfraRed Spectrometer (EMIRS) Instrument
    Springer Science and Business Media LLC ; 2021
    In:  Space Science Reviews Vol. 217, No. 7 ( 2021-10)
    Details
    In: Space Science Reviews, Springer Science and Business Media LLC, Vol. 217, No. 7 ( 2021-10)
    Abstract: The Emirates Mars Mission Emirates Mars Infrared Spectrometer (EMIRS) will provide remote measurements of the martian surface and lower atmosphere in order to better characterize the geographic and diurnal variability of key constituents (water ice, water vapor, and dust) along with temperature profiles on sub-seasonal timescales. EMIRS is a FTIR spectrometer covering the range from 6.0-100+ μm (1666-100 cm −1 ) with a spectral sampling as high as 5 cm −1 and a 5.4-mrad IFOV and a 32.5×32.5 mrad FOV. The EMIRS optical path includes a flat 45° pointing mirror to enable one degree of freedom and has a +/- 60° clear aperture around the nadir position which is fed to a 17.78-cm diameter Cassegrain telescope. The collected light is then fed to a flat-plate based Michelson moving mirror mounted on a dual linear voice-coil motor assembly. An array of deuterated L-alanine doped triglycine sulfate (DLaTGS) pyroelectric detectors are used to sample the interferogram every 2 or 4 seconds (depending on the spectral sampling selected). A single 0.846 μm laser diode is used in a metrology interferometer to provide interferometer positional control, sampled at 40 kHz (controlled at 5 kHz) and infrared signal sampled at 625 Hz. The EMIRS beamsplitter is a 60-mm diameter, 1-mm thick 1-arcsecond wedged chemical vapor deposited diamond with an antireflection microstructure to minimize first surface reflection. EMIRS relies on an instrumented internal v-groove blackbody target for a full-aperture radiometric calibration. The radiometric precision of a single spectrum (in 5 cm −1 mode) is 〈 3.0×10 −8 W cm −2  sr −1 /cm −1 between 300 and 1350 cm −1 over instrument operational temperatures ( 〈 ∼0.5 K NE $\Delta $ Δ T @ 250 K). The absolute integrated radiance error is 〈 2% for scene temperatures ranging from 200-340 K. The overall EMIRS envelope size is 52.9×37.5×34.6 cm and the mass is 14.72 kg including the interface adapter plate. The average operational power consumption is 22.2 W, and the standby power consumption is 18.6 W with a 5.7 W thermostatically limited, always-on operational heater. EMIRS was developed by Arizona State University and Northern Arizona University in collaboration with the Mohammed bin Rashid Space Centre with Arizona Space Technologies developing the electronics. EMIRS was integrated, tested and radiometrically calibrated at Arizona State University, Tempe, AZ.
    Type of Medium: Online Resource
    ISSN: 0038-6308 , 1572-9672
    URL: Article
    DOI: 10.1007/s11214-021-00848-1
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2021
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  • 2
    Online Resource
    Online Resource
    Miniature Thermal Emission Spectrometer for the Mars Exploration Rovers : MARS EXPLORATION ROVER MINI-TES
    American Geophysical Union (AGU) ; 2003
    In:  Journal of Geophysical Research: Planets Vol. 108, No. E12 ( 2003-12)
    Details
    In: Journal of Geophysical Research: Planets, American Geophysical Union (AGU), Vol. 108, No. E12 ( 2003-12)
    Type of Medium: Online Resource
    ISSN: 0148-0227
    URL: Article
    DOI: 10.1029/2003JE002117
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2003
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    SSG: 16,13
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