Being 'secondary' is important for a Webb Telescope mirror
Wednesday, July 20, 2011 - 16:00
in Astronomy & Space
(PhysOrg.com) -- "Secondary" may not sound as important as "primary" but when it comes to the next-generation James Webb Space Telescope a secondary mirror plays a critical role in ensuring the telescope gathers information from the cosmos. The Webb's secondary mirror was recently completed, following polishing and gold-coating.