Researchers suggest an ion engine could get a telescope to the Solar Gravitational Len point 81 billion kms from Earth in 13 years, and thus allow high resolution imaging of nearby exoplanets. - eviltoast
Ion engines could take us to the solar gravitational lens in less than 13 years, suggests paper
phys.org
Sending an object to another star is still the stuff of science fiction. But some concrete missions could get us at least part way there. These "interstellar precursor missions" include a trip to the solar gravitational lens point at 550 AU from the sun—farther than any artificial object has ever been, including Voyager.