Zakończono testy kriogeniczne JWST w komorze próżniowo-niskotemperaturowej
After over a year of planning, nearly four months of final cryo (cold) testing and monitoring, the testing on the science instruments module of the observatory was completed. They were removed from a giant thermal vacuum chamber at NASA's Goddard Space Flight Center in Greenbelt, Maryland called the Space Environment Simulator, or SES, that duplicates the vacuum and extreme temperatures of space. The SES is a 40-foot-tall, 27-foot-diameter cylindrical chamber that eliminates almost all of the air with vacuum pumps and uses liquid nitrogen and even colder gaseous helium to drop the temperature.
"We needed to test these instruments against the cold because one of the more difficult things on this project is that we are operating at very cold temperatures," said Begoña Vila, NASA's Cryogenic Test Lead for the ISIM at NASA Goddard. The ISIM, or Integrated Science Instrument Module is one of three major elements that comprise the James Webb Space Telescope Observatory flight system. "We needed to make sure everything moves and behaves the way we expect them to in space. Everything has to be very precisely aligned for the cameras to take their measurements at those cold temperatures which they are optimized for."
http://www.spacedaily.com/reports/NASA_marks_major_milestones_for_the_James_Webb_Space_Telescope_999.html
Wątek: James Webb Space Telescope (JWST) (Przeczytany 254315 razy)