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O HAPPY-TEAM EXIME-SE DE TODA A RESPONSABILIDADE PERMITIDA PELO ORDENAMENTO JURÍDICO PELOS DANOS E PREJUÍZOS DE TODA NATUREZA QUE POSSAM DECORRER DA TRANSMISSÃO, DIFUSÃO, ARMAZENAMENTO, DISPONIBILIZAÇÃO, RECEPÇÃO, OBTENÇÃO OU ACESSO AOS CONTEÚDOS, E EM PARTICULAR, AINDA QUE NÃO DE MODO EXCLUSIVO, PELOS DANOS E PREJUÍZOS QUE POSSAM DECORRER...
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  1. #1
    Colaborador Country: Europe Avatar de belgica
    Data de Ingresso
    Nov 2017
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    1.991

    Level: 45 [?]
    Experience: 4.631.134
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    [ASTRONOMIA] a Live View from the International Space Station

    High Definition Earth Viewing [HDEV] - image credit: NASA, UStream, HDEV Project


    »»» ¨ ISS HD Earth Viewing Experiment ¨ «««

    ¨ ¨ ¨ ver em fullscreen [F11]


    if you were floating above the Earth right now, this is what you might see

    in 2014, a robotic SpaceX Dragon capsule that delivered supplies to the Earth-orbiting International Space Station (ISS) also delivered High Definition Earth Viewing (HDEV) cameras that take and transmit live views of Earth

    pictured here, when working, is the live video feed that switches between four cameras, each pointed differently

    watch white clouds, tan land, and blue oceans drift by

    the featured live view will appear black when it is nighttime on the Earth below, but the space station's rapid 90-minute orbit compresses this dark time into only 45 minutes

    the present location of the ISS above the Earth can be found on the web

    if the video appears gray, this indicates that the view is either being switched between cameras, or communications with the ISS is temporarily unavailable

    as the HDEV project continues, video quality will be monitored to assess the effects of high energy radiation, which types of cameras work best, and which Earth views are the most popular



    Click here to enlarge


    NASA Image - HDEV Completed Flight Assembly



    Click here to enlarge

    HDEV Internal Electronics (image view: ISS Forward/Ram to left), image courtesy of HUNCH



    »»» ¨ ISS Science for Everyone ¨ «««

    the High Definition Earth Viewing (HDEV) experiment places four commercially available HD cameras on the exterior of the space station and uses them to stream live video of Earth for viewing online

    the cameras are enclosed in a temperature specific housing and are exposed to the harsh radiation of space

    analysis of the effect of space on the video quality, over the time HDEV is operational, may help engineers decide which cameras are the best types to use on future missions

    High school students helped design some of the cameras' components, through the High Schools United with NASA to Create Hardware (HUNCH) program, and student teams operate the experiment













































    in apod.nasa.gov/apod
    Última edição por belgica; 10-12-2019 às 17:41.
    passem bem,
    belgica

    it's good to work ... but it's not a reason to die for ...

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