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The James Webb Space Telescope has begun multiplayer alignment

BingMag.com The <b>James</b> <b>Webb</b> <b>Space</b> <b>Telescope</b> has <b>begun</b> <b>multiplayer</b> alignment

After reaching the main milestone of aligning the Telescope with the force, the James Webb Space Telescope team began to develop the steps of aligning the Telescope with the guide tool (guidance sensor) (FGS) and three other scientific tools. This six-week process is called Multimodal Field Alignment (MIMF).

When a ground-based Telescope is moved between different cameras, sometimes during the day when the Telescope is not in use, the optical instrument is physically removed. The Telescope is taken out and a new instrument is installed on it. If the other instrument is already on the telescope, there is a mechanism for moving part of the telescope's optical instrument (known as a mirror) into the field of view.

But in Space telescopes such as the Web, all cameras see the sky at the same time. To change the target from one camera to another, the Telescope is adjusted so that the subject is in the field of view of the other instrument.

After the MIMF process, the Telescope provides the desired focus and clear images in all instruments. . In addition, scientists need to know the relative positions of all fields of view accurately. Last weekend, NASA recorded the position of three near-infrared instruments relative to the guidance instruments and updated their positioning in the software used to target the telescope.

At another milestone, the precision guidance instrument (FGS) recently achieved "precise steering" mode for the first time, locking itself on a guide star using its highest level of accuracy. Scientists have also been able to obtain dark images to measure the telescope's baseline detector response when no light reaches them. An operation that is an important part of tool calibration.

BingMag.com The <b>James</b> <b>Webb</b> <b>Space</b> <b>Telescope</b> has <b>begun</b> <b>multiplayer</b> alignment

Various web optical instruments that are leveled during the multiprocessing process.
Credit: NASA

The Web-based Infrared (MIRI) instrument will be the last to be leveled because it is still waiting for the cooling of the instrument to reach its temperature. Cool to its final operating temperature of less than 7 degrees above absolute zero. In the initial steps of multi-tool alignment, two cooling steps are turned on to bring the "MIRI" to its operating temperature. The final stages of the MIMF also align the Telescope with the MIRI.

Since all instruments can see the sky at the same time, they can even be used at the same time. With parallel scientific instruments, when one instrument is pointed at a target, the data of another instrument can be read simultaneously.

Parallel observations do not see the same point in the sky, so what is essentially a random sample of the universe Is, offer. With a lot of parallel data, scientists can determine the statistical properties of identified galaxies. In addition, for applications that want to map a large area, many parallel images overlap, increasing the performance of valuable web datasets.

  • The process of aligning the James Webb mirrors

Cover photo: Graphic design by the James Webb Space Telescope
Credit: NASA


Source: SciTechDaily

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