A newly discovered cluster-scale strong gravitational lens, with a rare alignment of seven background lensed galaxies, provides a unique opportunity to study cosmology. In a rare and extraordinary ...
Astronomers at the University of Chicago, MIT and elsewhere have used a massive cluster of galaxies as an X-ray magnifying glass to peer back in time, to nearly 9.4 billion years ago. In the process, ...
The collimating lens has a diagonal full field angle of 65°. The aperture stop is positioned on the first surface of the lens, with an aperture stop size of 10 mm and F-number of 2.046. The angular ...