Gravitational lensing stereoscopy
A galaxy cluster, such as RX J2129, sometimes produces two or more gravitationally lensed images of more distant galaxies. We attempt to regard pairs of these images as stereo pairs. While not successful due to the small disparity angles involved, we suggest that with the 1011 light amplification anticipated from the Solar Gravitational Lens (SGL), individual stars of the distant galaxy might be resolved, resulting in 3D images.
gr-qc↗