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Comment by ragebol

6 hours ago

Yeah, I kinda get why astronomers are not particularly happy with satellite constellations.

And this is just the visible spectrum.

The situation is one order of magnitude worst in radio-astronomy.

It is fair to state that satellite constellations will certainly be the main obstacle to multiple major scientific discoveries in the next decade.

  • Opinion: We need to move our astronomical observation equipment off of Earth and onto other bodies, especially radio astronomy, which, unlike telescopes that operate in other wavelengths, is still affected by Earth's emissions in LEO/near-Earth space. We should put a radio telescope on the far side of the moon [0] to benefit from the thousands of kilometers of lunar material separating Earth's emissions from telescopes.

    [0] https://doi.org/10.1109/AERO50100.2021.9438165

    [1] https://en.wikipedia.org/wiki/Lunar_Crater_Radio_Telescope

    • Unfortunately, that seems to be the only solution.

      However, it has serious disadvantages. It will exclude the poorer from astronomical research, except within the limits enabled by whatever cooperation the richer will be willing to do with them.

      For the richer, that will make astronomical research much more expensive. When even USA, who claims to be the richest country, cuts a lot of the scientific funding, this makes likely a great reduction in the research targets that could be accomplished, even if a Lunar array of telescopes and radiotelescopes and communication relays for them were approved.

      While professionals might still be able to do some work, the amateurs will be able less and less to enjoy the sight of the distant Universe.

      There are already many years since I have become unable to see the sky that I enjoyed looking at when young, because it cannot be seen from the city where I live, due to light pollution (and high buildings). To see it again, I would have to go somewhere up in the mountains, far from a city or village, but I have not succeeded to do this recently. Even there now you can hardly look at the sky without seeing satellites, and it will only become much worse.

      Nowadays there are many children who have never seen even once the sky that our ancestors were seeing every night, so many passages from old texts that mention the sky are unintelligible for them.

      2 replies →

    • Our telescopes actually need the (or at least an) atmosphere to function.

      There are some classes of observatories, which you cannot build in space but which are still affected by satellites to some degree.

      4 replies →

    • > . We should put a radio telescope on the far side of the moon [0] to benefit from the thousands of kilometers of lunar material separating Earth's emissions from telescopes.

      Do you really think a starlink style installation won't be put in orbit of the moon before such a telescope could be funded?

      3 replies →

Not to disagree, but stacking a series of exposures with a sigma-clipped mean (or similar) should still get a nice image.

  • Exactly. It’s not that hard to remove the satellites. It’s almost easier than whining about it. But whining is more fun.

Computational photography has long been table stakes for astronomers. They just need to up their game on satellite rejection algorithms. Satellites look nothing like stars, and as such are pretty easy to remove with software. Pictures like this which leave them in are just there to make a point.

Doesn't matter. We, as a society, have said we're willing to give up nature in exchange for money machines the go brrrrr.