50+ James Webb Space Telescope Mirrors Background. Building the james webb space telescope (gallery). The mirror has a diameter 2.7 times the size of the one on the the reason that the mirror folds on the telescope is that when deployed, the mirror is too large to fit inside of the 16 foot payload fairing during launch.

Mirrors Webb/NASA from c1.staticflickr.com

Performed in early march, this most recent test involved commanding the spacecraft's internal systems to fully extend, and latch webb's iconic 21 feet 4. James webb has a much bigger mirror than hubble. It will be the most powerful space telescope ever built.

Welcome to /r/jameswebb, the subreddit for nasa's james webb space telescope.

The james webb space telescope at the goddard space flight center in greenbelt, maryland. A telescope's sensitivity is directly related to the size of its mirror, which determines how much light the telescope can collect from the objects it observes. Earth science, heliophysics, solar system. All 18 segments of the webb telescope's primary mirror were installed recently at nasa's goddard space flight center in greenbelt, maryland.