Mapping exoplanets with gravitational lensing

[Anonymous No.15172139]

Using the sun as a focusing lens it is possible to map exoplanets in other star system with detailed images of surface maps

Catch one is you need to align your receiver telescope exactly up to the point where the suns gravitational field bends the incoming exoplanets light in a intersection point. Something like 1.6 kilometers wide tube at the distance of 550 astronomical units from the sun in the direct opposite of where the exoplanet is in relation to the sun.

Anyone familiar with the matter on a engineering level? Is this idea viable like finding the exact coordinates in space where to position your telescope? Easier then it sounds when the prime methods of even detecting them is waiting for them to pass their hosts star in orbit. Which gives you a rough understanding where their exact coordinates are.

Keep in mind that aside from the already existing Falcons, if Starship delivers even half of what it promises access to space is already becoming dramatically cheaper. Thus a lot more hardware that can be feasibly deployed including the "daisy chaining" put forth by the PBS guy

https://www.youtube.com/watch?v=4d0EGIt1SPc

[Anonymous No.15172519]

>>15172139
Is it possible to do the aligning by zooming in from a less accurate position? Say you start in an approximate zone so you get the planet as a small, dim and blurry point of light, and you change positions to zoom and focus

[Anonymous No.15172539]

fake nasa soience

[Anonymous No.15172640]

>Is this idea viable like finding the exact coordinates in space where to position your telescope? Easier then it sounds when the prime methods of even detecting them is waiting for them to pass their hosts star in orbit.
A transit only tells you accurately where the planet is when it's crossing the star, because the angle of the orbit is not determined. Transits are not useful for this, it really needs direct imaging first for measuring the 3D orbit. This idea requires knowing the target far in advance and knowing it's orbit well. It will take decades before there are interesting targets.

There are also serious doubts as to whether the image fidelity will be useful.

https://arxiv.org/abs/1604.06351

>>15172519
No, there is no changing the magnification. The planet is behind the Sun when this happens, it's invisible unless it is exactly aligned. The field of view of this system is microscopic, it doesn't even cover the whole planet at once.

[Anonymous No.15172702]

>>15172640
There must be a field of light around the focus zone, even if blurry

[Anonymous No.15172821]

>>15172640
>The field of view of this system is microscopic,
the vid mentions something like 10 km patches of surface at time lol. To get the full picture the scopes needs to spiral out as they move along the long, long tube, thus gradually getting slices of all the visible terrain.

[Anonymous No.15172888]

>>15172539
lego is based tho, if a bit expensive

[Anonymous No.15173250]

>>15172640
>There are also serious doubts as to whether the image fidelity will be useful.
>https://arxiv.org/abs/1604.06351
>Geoffrey A. Landis
Isn't he the Venus blimp schizo?

[Anonymous No.15173793]

For reference this is what earth would look like from 100ly distance using this method

[Anonymous No.15173948]

>>15172139
Yes anton did a video on it.
You can launch a hypothetical light sail nano satellite and shoot it with a laser beam. It will get to 550AU in human lifespan.
(But no way to stop it there)

[Anonymous No.15174778]

>>15173948
you dont even need to go that autistic with lasers and nano. A ho hum gravitational slingshot around the sun will do it. As long as the sat can deal with the heat.

The biggest hurdle is finding the exact coordinates though. In addition to knowing where the exoplanet exactly is in relation to the sun you need to account its constant movement in orbit around its host. While at these distances even the distant star systems movement through space itself become a thing. Specifically since the magnification you get are small slices of the exoplanet, not complete overview shots a anon might think of. These are not static coordinates.

Honestly seems like a job for when space becomes industrialized enough that factory conveyers can churn out the scope sats in orbital dockyards to then spam the focal point with them. Gradually mapping out the entire thing. Only reserved for the best candidates humans are fairly confident of as real earth likes. By to date to my knowledge the "best" candidate is 11 day orbit rocky planet around a rather spergy red dwarf. Which in addition to the violent star risk is almost certainly tidally locked with god only knows if any magnetosphere. A far cry from earth 2.0

[Anonymous No.15174786]

Its just a big telescope. Like all telescopes if you get the angle wrong the tiniest bit you wont focus on the object, the rays are supposed to come parallel.

[Anonymous No.15174936]

>>15174778
Tbh antons video reference material weren't all that bothered by accuracy. They were saying it's a big ass region of space and confident that computers can ungarble whatever warped image we do happen to get.