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  • James Webb in orbit. just have to wait now

    From RichA@21:1/5 to All on Wed Jan 26 11:12:36 2022
    https://www.bbc.com/news/science-environment-60116475

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  • From StarDust@21:1/5 to RichA on Thu Jan 27 01:51:17 2022
    On Wednesday, January 26, 2022 at 11:12:38 AM UTC-8, RichA wrote:
    https://www.bbc.com/news/science-environment-60116475

    Mirrors have to be cleaned first with Windex ! https://www.youtube.com/watch?v=kL_zPY-4srY&list=PLmx7HMepeSoXU1Az7tDHcaodz4UdsPfex&index=103

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  • From Quadibloc@21:1/5 to StarDust on Thu Jan 27 12:57:21 2022
    On Thursday, January 27, 2022 at 2:51:19 AM UTC-7, StarDust wrote:

    Mirrors have to be cleaned first with Windex !

    If that were the case, we would already be sunk. Since the JWST
    is at the L2 point of the Earth-Sun system, it is not accessible for
    repairs by astronauts.

    John Savard

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  • From StarDust@21:1/5 to Quadibloc on Thu Jan 27 20:54:38 2022
    On Thursday, January 27, 2022 at 12:57:22 PM UTC-8, Quadibloc wrote:
    On Thursday, January 27, 2022 at 2:51:19 AM UTC-7, StarDust wrote:

    Mirrors have to be cleaned first with Windex !
    If that were the case, we would already be sunk. Since the JWST
    is at the L2 point of the Earth-Sun system, it is not accessible for
    repairs by astronauts.

    John Savard

    Cleaning robots, like the rumba, is the way to go!

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  • From MitchAlsup@21:1/5 to All on Wed Feb 2 19:41:53 2022
    There is a tank of 'some kind of gas' that can blow off the dust that will collect on the mirrors.

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  • From Pent@21:1/5 to MitchAlsup on Fri Feb 4 09:26:31 2022
    On 03/02/2022 03:41, MitchAlsup wrote:
    There is a tank of 'some kind of gas' that can blow off the dust that will collect on the mirrors.

    SOHO has been working for over 25 years and no one goes out there to
    polish the glass, unlike the James Webb it points towards the solar
    wind. Although various corrective optics were added to the Hubble to
    fixed the flaw they didn't wipe the mirror while there either, it's
    still limping along after 30 years.


    They all work in a hard vacuum.

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  • From StarDust@21:1/5 to Pent on Fri Feb 4 02:29:50 2022
    On Friday, February 4, 2022 at 1:26:36 AM UTC-8, Pent wrote:
    On 03/02/2022 03:41, MitchAlsup wrote:
    There is a tank of 'some kind of gas' that can blow off the dust that will collect on the mirrors.
    SOHO has been working for over 25 years and no one goes out there to
    polish the glass, unlike the James Webb it points towards the solar
    wind. Although various corrective optics were added to the Hubble to
    fixed the flaw they didn't wipe the mirror while there either, it's
    still limping along after 30 years.


    They all work in a hard vacuum.

    Hubble's optics is inside a tube, JWT is outside, exposed to the elements of space!

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