today I would like to mention new kind of telescope which is right now being build. It is quite amazing piece of human technology, The James Webb Sp Telescope.
Named after James E. Webb who was leading NASA about 50 years back. First they wanted this telescope to name Next Generation Space Telescope but then they decided to give James Webb the honor.
Above you can see how it should look like when we will launch it. It is telescope which should work instead of Hubble’s Space Telescope which even that it did great work, is not good enough right now. James Webb Space Telescope should have even better view in the vastness of Universe. Also more details which means that for example, we could get much more information about exoplanets, we could even start to analyze more of their atmosphere and learn more about stars and so on.
Still Hubble’s telescope has some time since James will be launched in 2018 in French Guiana. Here you can browse some pictures for sun shield testing, this is the part that is turned towards Sun and protects all the fragile tools that are on the telescope because in space, radiation could easily destroy transistors and other equipment.
The most kind of shocking part, which you can see above is the primary mirror. You can see that James Webb has upgraded a lot from Hubble. This mirror is actually too big so it had to be made from separate pieces, hexagons. It was quite fun to watch as they for months placed those plates on the structure. The mirror is made from beryllium because it is strong and light element and the top is covered in gold for protection from radiation. This kind of mirror is used on optical telescope and the bigger the mirror is the better the image which is formed. This is why they must be so polished, it is also important to have the working area clean so this is how the engineers usually look like:
There are few more instruments that collect the light in various spectrums. For now we must wait before they finish whole work, and there is nothing more to do than admire the work that Hubble has done for us (and is still doing (actually the work of engineers and scientists)).