"James Webb" completed the cryogenic test

On November 18, the 40-ton door of the Thermal Chamber A low-temperature chamber was opened at the Johnson Space Center. This event marked an important milestone in the history of the James Webb telescope. He successfully passed a key cryogenic test.

"James Webb" will conduct observations in the near and middle of the infrared range. For successful operation, its instruments must be reliably protected from any external thermal effects - primarily from the Sun, but also from the sunlight reflected by the Moon and the Earth, and the heat emitted by the telescope itself. For this, Webb will be equipped with a special heat shield the size of a tennis court. He will be able to maintain the working temperature of the telescope instruments at a mark below - 220 ° C.

The task of the cryogenic test was to ascertain the reliability of the instruments of the telescope in these conditions. Webb was placed inside the cell on July 10th. It took ten days to get all the air out of it and another month,to reduce the temperature to -236 ° C. After that, over the course of a month, engineers thoroughly tested all the instruments of the telescope. Previously, the high-tech stuffing Webb has already passed a similar low-temperature test, but without a bundle with a mirror.

During the time when the telescope was inside the camera, the Johnson center survived the impact of Hurricane Harvey, who caused a lot of trouble not only to specialists, but also to all people who were not indifferent to the space. Thanks to the efforts of the staff, the weather did not affect the test.

Now the mirror and tools of Webb will be delivered to California by Northrop Grumman Aerospace Systems. There they are integrated into the body of the spacecraft and install a heat shield. After that, the already fully assembled telescope will pass another series of tests simulating the conditions that will arise during the launch.

"James Webb" will be launched into space by rocket Ariane 5 from the Kourou cosmodrome in French Guiana. Recently, the launch date was postponed from November 2018 to the first half of 2019.

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James webbz complete cryogenic test

James webbz complete cryogenic test

James webbz complete cryogenic test

James webbz complete cryogenic test

James webbz complete cryogenic test

James webbz complete cryogenic test

James webbz complete cryogenic test

James webbz complete cryogenic test

James webbz complete cryogenic test

James webbz complete cryogenic test

James webbz complete cryogenic test James webbz complete cryogenic test James webbz complete cryogenic test James webbz complete cryogenic test James webbz complete cryogenic test James webbz complete cryogenic test James webbz complete cryogenic test James webbz complete cryogenic test James webbz complete cryogenic test James webbz complete cryogenic test James webbz complete cryogenic test James webbz complete cryogenic test James webbz complete cryogenic test James webbz complete cryogenic test James webbz complete cryogenic test James webbz complete cryogenic test James webbz complete cryogenic test James webbz complete cryogenic test James webbz complete cryogenic test James webbz complete cryogenic test