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Thread: Astronomers Despair As SpaceX Starlink Train Ruins Observation Of Nearby Galaxies

  1. #11
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    Quote Originally Posted by Norm dePlume View Post
    This is going to get a whole lot worse.
    No it won't. The issue is already being addressed. This is a temporary problem and had the astronomers who scheduled the telescope time done their checking they would have known and been able to mitigate the effects. As it states in the article,

    Satellites crossing the plane of view of telescopes is not unheard of, and image processing tools can be used to remove the trails – although if any crossed the pixels of a star or galaxy, it can be more difficult.
    Also, it ruined ONE out of 40 exposures. Meh - that's good even on a perfect night.
    "What truly matters is not which party controls our government, but whether our government is controlled by the people. January 20th 2017, will be remembered as the day the people became the rulers of this nation again. The forgotten men and women of our country will be forgotten no longer."

    link

    Time will tell.

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  3. #12
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    Quote Originally Posted by scott View Post
    No it won't. The issue is already being addressed. This is a temporary problem and had the astronomers who scheduled the telescope time done their checking they would have known and been able to mitigate the effects. As it states in the article,



    Also, it ruined ONE out of 40 exposures. Meh - that's good even on a perfect night.
    There are 60 of these in place now. The plan is to put 42000 of them in orbit. It is blanket coverage, by design. It won't be a question of timing in the future, because there will be no time during which astronomers won't have to remove trails, and the odds of a trail intersecting their point of interest will be much, much higher. I consider that "worse". How is it temporary?

    On some great and glorious day the plain folks of the land will reach their heart’s desire at last, and the White House will be adorned by a downright moron.
    -H. L. Mencken

  4. #13
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    Quote Originally Posted by Norm dePlume View Post
    There are 60 of these in place now. The plan is to put 42000 of them in orbit. It is blanket coverage, by design. It won't be a question of timing in the future, because there will be no time during which astronomers won't have to remove trails, and the odds of a trail intersecting their point of interest will be much, much higher. I consider that "worse".
    They are only visible at night in any earth based device when they are not in the Earth's shadow.

    Quote Originally Posted by Norm dePlume View Post
    How is it temporary?
    Higher eventual orbits and reduced albedo coatings of the satellites will make them not much of a factor at all. Plus, they will be in predictable and steady orbits so correcting for them will be easy.

    Are you having a serious conversation or are you now going to say I don't know what I'm talking about? I really don't want to get into another argument about whether stuff I've done is questioned by you.
    "What truly matters is not which party controls our government, but whether our government is controlled by the people. January 20th 2017, will be remembered as the day the people became the rulers of this nation again. The forgotten men and women of our country will be forgotten no longer."

    link

    Time will tell.

  5. #14
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    What makes you think that Starlink satellites are going to "higher eventual orbits" or getting reduced albedo coatings?

    On some great and glorious day the plain folks of the land will reach their heart’s desire at last, and the White House will be adorned by a downright moron.
    -H. L. Mencken

  6. #15
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    From Space.com
    SpaceX and its leader, Elon Musk, reassured astronomers that once the satellites settled into place, they would stop masquerading as the stars they are named for. McDowell wanted to confirm the accuracy of Musk's statement, so he asked an email Listserv of amateur astronomers to wait for the first batch of Starlink satellites to reach their final orbit, then compare the brightness of specific satellites to the stars around them.

    Those observations started in July. McDowell hasn't completed an exhaustive analysis, but he said the preliminary results are concerning, with Starlink satellites regularly clocking in at magnitudes between 4 and 7, which is bright enough to see without a telescope. "The bottom-line answer is, you can consistently see these things," he said.

    The initial Starlink launch carried 60 satellites, but that's just a tiny fraction of what SpaceX has described as its long-term plan, of launching tens of thousands of the devices in orbit. "When you're talking about 30,000 satellites, and many above the horizon at any one time, that's what's new about this," McDowell said. "It's not going to be just the occasional interference, it's going to be continual."
    Albedo reduction is going to be limited, because a large part of the reflective surface on these satellites is their solar panels, and you can't just paint a solar panel black if you want it to function.

    On some great and glorious day the plain folks of the land will reach their heart’s desire at last, and the White House will be adorned by a downright moron.
    -H. L. Mencken

  7. #16
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    Quote Originally Posted by Norm dePlume View Post
    What makes you think that Starlink satellites are going to "higher eventual orbits" or getting reduced albedo coatings?
    Elon Musk's words.
    "What truly matters is not which party controls our government, but whether our government is controlled by the people. January 20th 2017, will be remembered as the day the people became the rulers of this nation again. The forgotten men and women of our country will be forgotten no longer."

    link

    Time will tell.

  8. #17
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    Quote Originally Posted by Norm dePlume View Post
    From Space.com


    Albedo reduction is going to be limited, because a large part of the reflective surface on these satellites is their solar panels, and you can't just paint a solar panel black if you want it to function.
    They are the size of a pool table. Do the math if you are concerned. If you want to just recite "concerns" as some sort of way to argue then have at it.

    I guess you know more about astrophotography and deep sky imaging than me. Post your pictures.
    "What truly matters is not which party controls our government, but whether our government is controlled by the people. January 20th 2017, will be remembered as the day the people became the rulers of this nation again. The forgotten men and women of our country will be forgotten no longer."

    link

    Time will tell.

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