Chapter 761： He will promise (on)

The giant magellan telescope (gimt), also known as the giant Magellan telescope, is an extremely large telescope that is scheduled to be put into use in 2022 and will be built at the Lascampanas Observatory in Chile.

Gmt was built in cooperation with the Australian National University by eight units including the Carnegie Institution of Washington in the United States. The main mirror with an equivalent diameter of 21.4 meters consists of seven sub-mirrors with a diameter of 8.4 meters. The budget cost is 625 million. The US dollar, the comprehensive resolution is equivalent to a single primary mirror of about 25 meters, which is 4.5 times the function of the largest optical telescope, and the imaging resolution will be 10 times that of the Hubble Space Telescope.

Large Magellan's lens diameter has set a new world record, becoming the largest diameter telescope in a single lens telescope. The machining accuracy must be less than 20 nanometers. The higher the precision, the better.

If the plan is successful, not to mention the clarity of the image, only the manufacturing technology of the lens will be completely upgraded to a completely new realm.

“The gmt plan has already been implemented and the lenses are also undergoing trial production.”

After introducing a situation, Xiao Fen said to Guo Tai: "Seven mirrors, plan to use each of them for four years to polish and polish."

"Maybe it's almost, maybe four years is not enough."

Guo Tailai nodded. He definitely has a say in processing and his judgment is good enough.

According to Guo Tailai's vision in the future, the plan is to create a mirror every four years, but after actually starting to manufacture, the first mirror took ten years.

The second mirror was driven by the risk of destruction. Production began in January 2012 and was not completed until 2019.

As Guo Tailai said, this is simply the difficulty of hell.

“It takes six months for the mirror embryo to smelt and rotate. When the mirror is formed, it takes three months for the furnace and the lens to slowly return to room temperature.”

Xiao Fen did not say much details. It is estimated that he will remember that it takes three months to cool the mirror.

Such a large diameter lens requires such high precision that there must be no sputum bubbles in the lens. It takes nine months for the mirror embryo to complete.

But this is normal.

"g, are you interested in joining this program?"

Xiao Fen En asked Guo Tailai: "Your polishing method may become the key to mirror production."

"I'll think it over."

Guo Tailai did not immediately agree, but said to consider first.

With a large diameter of eight meters, there is really no high-precision processing equipment that can process such a large lens at one time, and only a high-precision grinding machine polishes and polishes little by little.

Lodtm does make optical components, but the size of the workpiece being machined is limited.

Although the domestic lodtm has been improved by Guo Tailai, the largest one can only process workpieces with a diameter of two meters, which is impossible.

What I have to do now, but the large diameter high-precision lens of eight meters four, do not think about lodtm.

Needless to say, the processing equipment, even the measurement is very troublesome.

It can be measured directly on the lens, but in the end it is necessary to build a test tower to correct with optical measurement, a complicated mess.

Of course, there is another point, because the manufacturing process is difficult, so the cost of each mirror may exceed 20 million US dollars.

If you remove the raw materials for making mirrors and the process of processing lenses for nine months, the remaining polishing and polishing costs may be less than half.

The remaining half is more than $10 million, distributed within three or four years of manufacturing, and the annual cost is two or three million dollars, killing four million dollars.

In order to get into three or four million dollars a year, it’s worth it for a few years.

"g, if you join, you can recommend a partner to join the program."

Xiao Fen certainly knows that Guo Tailai will not consider the issue of processing costs, so he directly raised a condition that made Guo Tailai tempted.

"I need to think about it."

Guo Tailai said as he squirmed his fingers as if it were itchy.

This action was seen in the eyes of Xiao Fen and was recorded in my heart.

Xiaofenen did not force Guo Tailai to express his position immediately. He just smiled and said: "You think about it slowly. Just consider making a phone call later."

When the two were separated, Guo Tailai seemed to be still pondering, but the subconscious singer of the fingers also showed that Guo Tailai did have some itching.

Back to his place of residence, Xiao Fen first called his father and described the details of the two people's exchanges today, especially in the case of Guo Tailai, who was thinking about moving his fingers. The description is very detailed.

"He will promise."

After listening to Xiao Fen’s research, the old Finn laughed and gave a conclusion.

"why?"

Xiao Fen asked inexplicably.

Today's talks were arranged by the father. Let him pay special attention to Guo Tailai's performance as well as his father's account. Many things Xiaofen did not understand.

"You hit a high score when you played the game, but you obviously try a few more times, you can also play a better score, will you continue?"

Old Finn asked with a smile.

"Yes!"

Xiao Fen replied without thinking.

"g is the same."

Old Finn smiled and explained: "You can see this by looking at his previous research in the car.

From the beginning of the rx7 ultimate version, to Pagani zondat, then to Lamborghini chiron, then to Ferrari Agnelli, once and for all is hitting new records.

The same is true for motorcycles, the Terminator, and the Shenzhou motorcycle, which is hitting a new world record every time.

In essence, g is a person who likes to constantly improve and constantly improve. ”

"The same is true for processing."

Old Finn went on to say: "You see him from high-precision bearings until later high-precision CNC, large-format ultra-high-precision absolute plane, the peak is lodtm diamond lathe, but he never stopped to pursue the limit.

Speaking of it, I admire his spirit, but this is what we are very worried about! ”

"What does it matter to us to let him join this program?"

Xiao Fen asked inexplicably, but immediately after asking it, he reacted: "You mean, let him participate in this project, and then he manually processed it for a few years, involving most of his future time and energy. In the manufacture of high precision lenses?"

"Yes, this is good for everyone."

Mr. Finn said: "We don't want to tear the face directly to destroy the cooperation between the two sides, and we don't want to ruin the chance of getting g care. This is the best way.

Let him put most of his time and energy into the manufacture of lenses, then he has no more time to develop their own manufacturing.

A few mirrors add up to ten or twenty years, and by that time, his body and energy will not have this peak state.

Although we can't stop the development of China's processing industry, let them slow down and still be able to do it. ”