Webb’s Integrated Science Instrument Module (ISIM) and Science Instruments Complete the Second of Three Cryogenic Vacuum Tests.

  • Released Tuesday, March 17, 2015

The Webb Telescope completes a major test milestone designated CV2 (Cryogenic Vacuum test 2). This test examined the heart of the Webb Telescope, it’s full flight ISIM assembly. This test included all four of Webb’s science instruments (FGS/NIRISS, MIRI, NIRCam, and NIRSpec) with their associated warm electronics boxes and flight harnesses. The more than three month long test inside NASA Goddard Space Flight Center’s Space Environment Simulator subjected the structure and instruments to the vacuum and cryogenic temperature they will be operating in during the mission. CV2 is the first opportunity to assess the health and functionality of Webb’s ISIM as a whole at its cryogenic operating temperature.


Please give credit for this item to:
NASA's Goddard Space Flight Center

Release date

This page was originally published on Tuesday, March 17, 2015.
This page was last updated on Wednesday, May 3, 2023 at 1:49 PM EDT.


This visualization can be found in the following series: