• Really cool news on Webb

    From kelleher.gerald@gmail.com@21:1/5 to All on Wed Dec 29 00:12:08 2021
    https://twitter.com/NASAWebb

    Hopefully the successful deployment continues.

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  • From StarDust@21:1/5 to kellehe...@gmail.com on Wed Dec 29 22:55:21 2021
    On Wednesday, December 29, 2021 at 12:12:09 AM UTC-8, kellehe...@gmail.com wrote:
    https://twitter.com/NASAWebb

    Hopefully the successful deployment continues.

    You're not gonna see pretty pictures like from the Hubble?
    JWT is an infrared telescope!

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  • From kelleher.gerald@gmail.com@21:1/5 to All on Wed Dec 29 23:13:01 2021
    Disregarding the 'big bang' overreach, the telescope will present a more detailed look at stellar evolution by having a more abundant range of choices. It may be possible to create a better narrative of stellar evolution and the birth of a solar system
    considering that these events are still occurring and they have a specific geometry attached-

    https://hubblesite.org/contents/media/images/2004/09/1487-Image.html

    https://apod.nasa.gov/apod/ap120226.html

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  • From kelleher.gerald@gmail.com@21:1/5 to StarDust on Wed Dec 29 23:06:22 2021
    On Thursday, December 30, 2021 at 6:55:23 AM UTC, StarDust wrote:
    On Wednesday, December 29, 2021 at 12:12:09 AM UTC-8, kellehe...@gmail.com wrote:
    https://twitter.com/NASAWebb

    Hopefully the successful deployment continues.
    You're not gonna see pretty pictures like from the Hubble?
    JWT is an infrared telescope!


    Good to see you are over your fascination with female tits and suckling infants, but seemingly have adopted the other nuisance and his "pretty pictures" taunt.

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  • From Quadibloc@21:1/5 to StarDust on Thu Dec 30 01:09:47 2021
    On Wednesday, December 29, 2021 at 11:55:23 PM UTC-7, StarDust wrote:

    You're not gonna see pretty pictures like from the Hubble?
    JWT is an infrared telescope!

    Now, that's not true. JWT isn't just going to do spectroscopy, it
    _will_ do imaging. So the images will be in false colors, that
    doesn't mean there won't be images.

    But it will be looking out at distant stars and galaxies, mainly
    in order to do astrophysics. No pictures of the planets or their
    satellites, their rotation or orbits. That is why I would be inclined
    to have expected the original poster to not be too interested.

    John Savard

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  • From Quadibloc@21:1/5 to Quadibloc on Thu Dec 30 01:29:18 2021
    On Thursday, December 30, 2021 at 2:09:48 AM UTC-7, Quadibloc wrote:
    On Wednesday, December 29, 2021 at 11:55:23 PM UTC-7, StarDust wrote:

    You're not gonna see pretty pictures like from the Hubble?
    JWT is an infrared telescope!
    Now, that's not true. JWT isn't just going to do spectroscopy, it
    _will_ do imaging. So the images will be in false colors, that
    doesn't mean there won't be images.

    But it will be looking out at distant stars and galaxies, mainly
    in order to do astrophysics. No pictures of the planets or their
    satellites, their rotation or orbits. That is why I would be inclined
    to have expected the original poster to not be too interested.

    A video I saw on YouTube included a picture from some random
    web site where a game show contestant seemed to be having
    trouble with the following question:

    Which of these is a country:

    Africa
    Europe
    London
    Taiwan

    The answer, of course, is "Taiwan", although if you're John Cena,
    you might be hesitant to say so. (Africa and Europe are continents,
    and London is a city.)

    Anyways, I searched for the source of the image - and in looking for
    it, I ran across the image on this page

    https://americasbestpics.com/picture/eZ83dt3C9

    which the original poster of this thread _really_ wouldn't like.

    John Savard

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  • From kelleher.gerald@gmail.com@21:1/5 to All on Thu Dec 30 03:11:03 2021
    The imaging supplied by Webb with a greater range of objects to image will hopefully expand the narrative where some supernova events do not represent the demise of the antecedent star, but a redistribution of mass into the creation of a solar system and
    therefore a metamorphosis from one state to another.

    http://www.sci-news.com/astronomy/science-remnant-supernova-sn1987a-02268.html

    Our own star, due to the residual geometry of these events, may have gone through this process along with supporting pre-supernova and post-supernova imaging.

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  • From StarDust@21:1/5 to kellehe...@gmail.com on Thu Dec 30 03:01:18 2021
    On Wednesday, December 29, 2021 at 11:06:23 PM UTC-8, kellehe...@gmail.com wrote:
    On Thursday, December 30, 2021 at 6:55:23 AM UTC, StarDust wrote:
    On Wednesday, December 29, 2021 at 12:12:09 AM UTC-8, kellehe...@gmail.com wrote:
    https://twitter.com/NASAWebb

    Hopefully the successful deployment continues.
    You're not gonna see pretty pictures like from the Hubble?
    JWT is an infrared telescope!
    Good to see you are over your fascination with female tits and suckling infants, but seemingly have adopted the other nuisance and his "pretty pictures" taunt.

    https://www.youtube.com/watch?v=F_dFUi4oQsw&list=PLmx7HMepeSoXU1Az7tDHcaodz4UdsPfex&index=84

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  • From Jos Bergervoet@21:1/5 to StarDust on Thu Dec 30 12:26:12 2021
    On 21/12/30 7:55 AM, StarDust wrote:
    On Wednesday, December 29, 2021 at 12:12:09 AM UTC-8, kellehe...@gmail.com wrote:
    https://twitter.com/NASAWebb

    Hopefully the successful deployment continues.

    You're not gonna see pretty pictures like from the Hubble?
    JWT is an infrared telescope!

    Yes, you will have to look at those pictures with a special
    infrared viewer! Better buy one now, before they sell out: <https://duckduckgo.com/?q=infrared+viewer+ebay&iax=images&ia=images>

    --
    Jos

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  • From Martin Brown@21:1/5 to StarDust on Thu Dec 30 21:19:47 2021
    On 30/12/2021 06:55, StarDust wrote:
    On Wednesday, December 29, 2021 at 12:12:09 AM UTC-8, kellehe...@gmail.com wrote:
    https://twitter.com/NASAWebb

    Hopefully the successful deployment continues.

    You're not gonna see pretty pictures like from the Hubble?
    JWT is an infrared telescope!

    It can still make monochrome intensity images or wavelength dependent
    false colour images. Just like the Hubble and radio telescopes do.

    One of the channels in many Hubble palette images SII is redder than
    Halpha almost beyond wavelengths that human eyes are sensitive to.

    https://www.skyatnightmagazine.com/astrophotography/astrophoto-tips/create-hubble-palette-astro-images-astro-pixel-processor/

    Many Hubble images are in artificial colours by design.

    I hope that unfurling the heat shield goes smoothly it is a very tricky
    piece of origami to perform at a distance. It won't work without it!

    --
    Regards,
    Martin Brown

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  • From kelleher.gerald@gmail.com@21:1/5 to Martin Brown on Fri Dec 31 01:57:14 2021
    On Thursday, December 30, 2021 at 9:20:00 PM UTC, Martin Brown wrote:
    On 30/12/2021 06:55, StarDust wrote:
    On Wednesday, December 29, 2021 at 12:12:09 AM UTC-8, kellehe...@gmail.com wrote:
    https://twitter.com/NASAWebb

    Hopefully the successful deployment continues.

    You're not gonna see pretty pictures like from the Hubble?
    JWT is an infrared telescope!
    It can still make monochrome intensity images or wavelength dependent
    false colour images. Just like the Hubble and radio telescopes do.

    One of the channels in many Hubble palette images SII is redder than
    Halpha almost beyond wavelengths that human eyes are sensitive to.

    https://www.skyatnightmagazine.com/astrophotography/astrophoto-tips/create-hubble-palette-astro-images-astro-pixel-processor/

    Many Hubble images are in artificial colours by design.

    I hope that unfurling the heat shield goes smoothly it is a very tricky
    piece of origami to perform at a distance. It won't work without it!

    --
    Regards,
    Martin Brown


    Everything seems to be going as planned, thank God-

    https://www.jwst.nasa.gov/content/webbLaunch/whereIsWebb.html

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  • From kelleher.gerald@gmail.com@21:1/5 to All on Sat Jan 1 01:41:44 2022
    Good to see the major milestone of the sunshield deployed-

    https://www.jwst.nasa.gov/content/webbLaunch/whereIsWebb.html

    Thanks to those who are promoting the capability of the telescope in terms of imaging.

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  • From Quadibloc@21:1/5 to Quadibloc on Sun Jan 2 22:04:01 2022
    On Thursday, December 30, 2021 at 2:09:48 AM UTC-7, Quadibloc wrote:
    On Wednesday, December 29, 2021 at 11:55:23 PM UTC-7, StarDust wrote:

    You're not gonna see pretty pictures like from the Hubble?
    JWT is an infrared telescope!

    Now, that's not true. JWT isn't just going to do spectroscopy, it
    _will_ do imaging. So the images will be in false colors, that
    doesn't mean there won't be images.

    Someone else mentioned that pictures from the Hubble are usually
    in the "Hubble Palette"; that is, monochrome _narrowband_ images
    for three specific spectral lines are combined, with one each as R, G,
    and B, to create a color image with exaggerated color.

    Presumably, the same thing will be done with the Webb telescope
    to form images.

    The Hubble palette involves a red Sulfur II line assigned to R, a red
    Hydrogen alpha line assigned to G, and a green Oxygen III line assigned
    to B.

    The gold-coated mirrors of the James Webb telescope will have no
    problem reflecting red light, in addition to near infrared and far
    infrared light.

    The spectrum of Oxygen III does not just contain one line. There are
    88,400 nm and 51,800 nm lines in the far infrared.

    The Near Infrared camera is sensitive down to 600 nm. Both the
    Hydrogen alpha line and the Sulfur II line are between 600 nm and
    700 nm, so they are within its range. However, only broad-band
    filters are noted as being included with the instrument.

    The Mid-Infrared Instrument does imaging from 5,000 nm to 28,000 nm.
    That will not be able to image using the Oxygen III lines I've noted.

    I was wondering if it would be possible for the Webb telescope, by using
    a different spectral line of Oxygen III, to "fake" a Hubble palette image.

    John Savard

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  • From Martin Brown@21:1/5 to Quadibloc on Mon Jan 3 12:11:25 2022
    On 03/01/2022 06:04, Quadibloc wrote:
    On Thursday, December 30, 2021 at 2:09:48 AM UTC-7, Quadibloc wrote:
    On Wednesday, December 29, 2021 at 11:55:23 PM UTC-7, StarDust wrote:

    You're not gonna see pretty pictures like from the Hubble?
    JWT is an infrared telescope!

    Now, that's not true. JWT isn't just going to do spectroscopy, it
    _will_ do imaging. So the images will be in false colors, that
    doesn't mean there won't be images.

    Someone else mentioned that pictures from the Hubble are usually
    in the "Hubble Palette"; that is, monochrome _narrowband_ images
    for three specific spectral lines are combined, with one each as R, G,
    and B, to create a color image with exaggerated color.

    Presumably, the same thing will be done with the Webb telescope
    to form images.

    The Hubble palette involves a red Sulfur II line assigned to R, a red Hydrogen alpha line assigned to G, and a green Oxygen III line assigned
    to B.

    The gold-coated mirrors of the James Webb telescope will have no
    problem reflecting red light, in addition to near infrared and far
    infrared light.

    The spectrum of Oxygen III does not just contain one line. There are
    88,400 nm and 51,800 nm lines in the far infrared.

    The Near Infrared camera is sensitive down to 600 nm. Both the
    Hydrogen alpha line and the Sulfur II line are between 600 nm and
    700 nm, so they are within its range. However, only broad-band
    filters are noted as being included with the instrument.

    The Mid-Infrared Instrument does imaging from 5,000 nm to 28,000 nm.
    That will not be able to image using the Oxygen III lines I've noted.

    I was wondering if it would be possible for the Webb telescope, by using
    a different spectral line of Oxygen III, to "fake" a Hubble palette image.

    Maybe if they can pick an epoch. Remember at serious cosmic distances Lyman-alpha is a long way from where you might expect to see it!

    This paper describes the Webb instrumentation in considerable detail.

    https://sci.esa.int/documents/34594/36271/1567258187281-JWST_SRD.pdf

    BTW Happy New Year to you all!

    --
    Regards,
    Martin Brown

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