The James Webb Space Telescope has successfully deployed the tripod that holds the observatory’s secondary mirror, in what is a critical milestone for the mission. Webb launched on Christmas Day ...

In another major milestone for the James Webb Space Telescope, a motor-driven tripod unfolded as planned Wednesday, moving a 2.4-foot-wide secondary mirror into position to reflect collected ...

This is the role of the 74cm-wide secondary mirror. Sitting out in front, it will bounce back into the heart of the observatory whatever the main mirror sees. James Webb telescope: Sun shield is ...

Next month, a 120-ton crane will be brought to the summit to remove the telescope’s larger components, including its 34-foot-diameter primary mirror — although Golwala said that without the ...

NASA confirmed on Wednesday that the secondary mirror on the James Webb Space Telescope has been successfully deployed. It means the team can now focus on one of the most crucial steps in the ...

The James Webb Space Telescope successfully completed the unfolding of its giant gold mirror on Saturday. This rounds out some of the greatest challenges and deployments for Webb since it launched ...

image: The round, gold coated secondary mirror that will fly aboard NASA's James Webb Space Telescope looks like a giant sun in this photo where technicians at NASA were securing it to a platform ...

Vera C. Rubin Observatory's 3.5-meter secondary mirror has been installed on the Simonyi Survey Telescope on Cerro Pachón in Chile. The glass mirror—made by Corning Advanced Optics and polished ...

The raw secondary mirror for the Extremely Large Telescope has been cast; now it will spend a year cooling before it is meticulously ground and polished into a precise shape for the megatelescope.

The secondary mirror travelled to space stowed on top of the main mirror, attached to three 26-feet-long (8 m) legs that form its supporting tripod. You may like NASA's James Webb Space Telescope ...

The sole secondary mirror that will fly aboard NASA’s James Webb Space Telescope was installed onto the telescope at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, on March 3, 2016.