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Články z EurekAlertWebb Telescope's first primary mirror meets cold temperature specifications, sets program landmark

2. 3 2010 (06:00)

The James Webb Space Telescope reached a mission-readiness landmark today when its first primary mirror segment was cryo-polished to its required prescription as measured at operational cryogenic temperatures. This achievement sets the stage for a successful polishing process for the remaining 18 flight mirror segments.