Prep for Cryo Tests

The James Webb Space Telescope's Pathfinder (or test) backplane is prepped for cryogenic testing at NASA Johnson. The backplane is like the spine of the spacecraft and supports the mirrors and the instrument module.

 

Why does the telescope need to be tested cryogenically? Read more: www.nasa.gov/content/webb-conversations-freezing-nasas-we...

 

Credit: NASA/Chris Gunn

 

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