IT House January 13 news, today NASA James Webb Space Telescope official Twitter account released a message, said that it has been confirmed that all the fine-tuning motors on the back of the lens, are in normal working condition. At the same time, the official release of 18 main lens back motors and fine-tuning function demonstration animation.
As can be seen from the video, the back of the 18 hexagonal main lenses is a skeleton structure, with four motors installed, and the central one is a fixture. The lens is mounted on a metal mesh and supports rotation, pitch adjustment in all directions, translation, etc., enabling 5-axis adjustment. In order to counteract the microscopic deformation of the lenses themselves, the motor on the back of each lens can also make the lenses slightly distorted and adjusted.
IT House learned that the James Webb Space Telescope contains not only a main mirror composed of 18 lenses, but also a number of other small mirrors, which are also equipped with a fine-tuning motor, and the optical path is reflected back and forth to the sensor. The following is a demonstration of the process of calibrating lenses:
NASA estimates that the entire calibration process will take about three months, and as long as everything goes according to plan, the work will be completed in mid-April. Launched on December 25, 2021, the Webb Space Telescope may support up to 20 years of scientific research due to the precision of the launch process, but it all depends on the mirror working properly.