Another #MirrorSeason milestone - #JWST's secondary mirror successfully installed! More: http://go.nasa.gov/1paWZ17 pic.twitter.com/gOEJVgedzN
-
@NASAWebbTelescp Why is the secondary mirror convex? Defocus the light? Thought it should converge at instruments.#JWST#MirrorSeason
@DirkNC Pretty standard Cassegrain design to have concave primary and convex secondary. More: https://en.wikipedia.org/wiki/Cassegrain_reflector … (1/2)
-
-
@NASAWebbTelescp Wow, cool! Didn't realize there was that much space behind the primary mirrors, looks so compact in images.#EngineerWinThanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.