How far can stellar parallax measure?

1 Answer
Apr 10, 2016

Radio Telescope technology seems to be so advanced that detailed images made by visible-light wave lengths can generate data (including distances) on far distant stars at millions of ly..


There are limitations on parallax measurements on a single star. For far distant groups (galaxy and clusters), the parallax measurements might be within 0.001" precision, and the distance can be approximated.

For some details on the updated Radio Telescope Technology, relating to making of images by visible-light wave length (using 10 Radio Telescope Antennas, from Hawaii to Caribbeans) and drawing details on distance et al accurately, see the following reference.