No it won't. The orbit will be .05AU away from the star, and it's 4 light years away. That's 0.04 arcseconds. Do the math.
Quote from: Robotbeat on 08/31/2016 04:17 pmNo it won't. The orbit will be .05AU away from the star, and it's 4 light years away. That's 0.04 arcseconds. Do the math.Again, that's not how Einstein rings work. The image is as if the system was at the distance of the lens (in this case, the 700AU between the observer and the sun.)...
That's the same whether the target system is 4 lightyears away or 4 million.
Quote from: Paul451 on 08/31/2016 04:42 pmThat's the same whether the target system is 4 lightyears away or 4 million.However, tracking a target does scale with the distance to the target system. The ratio of skew distance is the distance-from-the-target-to-the-sun / distance-from-the-observer-to-the-sun. So for this example, it's 4.3somit lightyears / 700 AU. Or about 380. So to track a 14 million km wide orbit, you have to track 37,000 km.
So it doesn't sound such a tremendous deltaV (conservatively 1km/s ??) to track 37000 km span back and forth (or ellipse) on a 11.2 days period for a few orbits, say 3 or 4 ?
The solution is (mathematically) simple Along with the telescope, just launch half (0.44) the moon's mass along the Proxima - Sun line. Your telescope can then orbit round this with a radius of 37,000 km and a period of 11.2 days. Thus no propellant needed to maintain Proxima B in your FOV!
Project Orion is workable with sixty years old technology. It could reach 10% of the speed of light thus reaching Proxima centauri in 50 years. but of course politically it is unpalatable.
In another thread someone suggested using a lightsail to hide the star. That was an interesting idea. Could that help even if it were not even a thousandth of the distance there? That is still a long way. Im not sure how you would keep the lightsail between your telescope and star for any prolonged period of time. Perhaps both need to have escaped the solarsystem.
I do not believe antimatter repulses matter graviationally. you would need negative mass for that.
Quote from: Paul451 on 08/31/2016 04:48 pmQuote from: Paul451 on 08/31/2016 04:42 pmThat's the same whether the target system is 4 lightyears away or 4 million.However, tracking a target does scale with the distance to the target system. The ratio of skew distance is the distance-from-the-target-to-the-sun / distance-from-the-observer-to-the-sun. So for this example, it's 4.3somit lightyears / 700 AU. Or about 380. So to track a 14 million km wide orbit, you have to track 37,000 km.The solution is (mathematically) simple Along with the telescope, just launch half (0.44) the moon's mass along the Proxima - Sun line. Your telescope can then orbit round this with a radius of 37,000 km and a period of 11.2 days. Thus no propellant needed to maintain Proxima B in your FOV!Wait one moment... You want 37,000km diameter, not radius. In that case it's even easier; you only need 4^21 kg - roughly 5.5% of the moon or 4.5 times the mass of Ceres.