"Brother! Sister Miaomiao! I'm telling you seriously, you must not look at the sun! We don't have sunshades, and looking at the sun will go blind! In short! No one can look at the sun!"
Du Chen was shocked by Du Bin's question. The consequences of looking at the sun were too scary. If Du Bin hadn't asked him, he might have ignored it. No one could afford the consequences!
"What? Is it so dangerous? Why don't we just take this thing down!"
Ren Surong was also shocked by this question. She was so worried that she wanted to dismantle the astronomical telescope directly.
"Mom, that's not necessary. I'll just make a lens hood and not let anyone else use it!"
Du Chen comforted his mother. He also knew that his family was an ordinary one. If anything happened, it would be like going back to the time before liberation, so he was also prepared to take some precautions.
"Du Bin, Miao Miao, you heard what Chen Chen said. Don't use this telescope during the day! It's too scary!"
Ren Surong warned Du Bin and Ding Miaomiao. Thinking about it now, he still felt a lingering fear. There were people coming and going in the store. If someone was curious and used the telescope to look around, it would be a disaster if something happened.
Du Chen looked at the astronomical telescope in front of him, thought for a while, and found some leftover scraps from the second floor. He took out the tools and tinkered with them for a long time before adding a light shield to the barrel of the telescope. Although it was a bit ugly, it was much safer without the reflection of the light source.
After thinking about it, Du Chen took off the eyepiece again, handed it to Ren Surong, and then gave Ren Surong some instructions.
"Mom, please put this eyepiece away. Don't give it to anyone else except me. Only when I'm here can you use this astronomical telescope! It's safe this way!"
Du Chen spoke very seriously. He was not making a fuss because he had seen too many such cases around him in the past. Many of his friends or bosses he knew had just started to make progress in their careers, but because of a negligence, they were back to square one overnight. Some even ended up in jail. So Du Chen was more cautious in everything he did. He would not do anything illegal or risky. Although he would not make a fortune this way, at least he would be safe and stable.
"Is everything really okay now?"
Du Chen's mother was still a little worried.
"Don't worry, Mom. It'll be fine now! I even added a lens hood up front. Now you can't even see any light, so it's fine!"
Du Chen comforted his mother, and after doing this, Du Chen felt relieved.
"Chenchen, is it so dangerous?"
Ding Miaomiao also came to her senses at this time and asked Du Chen curiously.
"Let's eat first and talk while we eat!"
It had been more than half an hour since they came back from school, and Du Chen was hungry. Besides, they should take a rest after dinner, and Du Chen and his friends also needed a lunch break, so Du Chen suggested that they eat first and talk while eating.
"Yes, yes, yes, hurry up and eat first, it won't be too late after dinner!"
Ren Surong also realized that it was getting late and she had to eat quickly, otherwise she wouldn't have enough time for her lunch break.
At the dinner table, Du Chen explained to Du Bin and Ding Miaomiao while eating.
"Brother, Sister Miaomiao, the astronomical telescope we made is called a Newtonian reflecting telescope. It is the most widely used astronomical telescope at present. For example, the Hubble Space Telescope is also a reflecting telescope."
"The principle is that the light passing through the barrel is focused on the reflector at the bottom. The reflector is a concave mirror, which then reflects the light onto the eyepiece. In this way, we can see the object being observed. If you observe the sun, just imagine the intensity of the sunlight. If it is reflected by the concave mirror and then enters the human eye, it will either blind or become partially disabled!"
"So I'm not kidding, never go to look at the sun! It's very, very dangerous!"
After listening to Du Chen's explanation, Du Bin and Ding Miaomiao nodded to show that they understood.
"Chenchen, can we see the moon tonight?"
Ding Miaomiao asked Du Chen expectantly. After all, they had been waiting for almost a month before the astronomical telescope was finally completed.
"Of course it's OK if the weather's good, but I have to wait until you guys finish your evening self-study. I still have to adjust it a little bit after school because the focus imaging may not be clear right now. I'll adjust it in the evening. It'll be just right when you guys finish your evening self-study."
Du Chen thought about it and said to Ding Miaomiao.
"Ah, I thought I could watch it after school tonight!"
Ding Miaomiao was a little disappointed. She wanted to see the moon as soon as possible, but she didn't expect that she had to wait until after evening self-study.
"You three should eat quickly, then go to sleep. We can talk about the rest in the evening!"
Ren Surong looked at the three people who were chatting enthusiastically and immediately stopped them from chatting, asking them to finish their meal and rest quickly.
…
After more than half an hour of fine-tuning, Du Chen finally saw the moon clearly through the eyepiece. Even the craters on the surface of the moon were clearly visible. Du Chen felt a sense of accomplishment.
The astronomical telescope in front of Du Chen is taller than an adult. In order to facilitate movement, Du Chen asked Comrade Lao Du to help weld a pan-tilt base with steel pipes. The height can be adjusted by rotating it at will, making it convenient for observing the starry sky. Looking at the big guy in front of him, Du Chen feels a sense of accomplishment.
"Chenchen, have you finished your astronomical telescope?"
Ren Surong was watching from the side, and she was also curious whether she could see the moon clearly.
"Mom, come over here and try it! Try it yourself and see if you're satisfied with the results!"
Du Chen pulled his mother to the side of the astronomical telescope. Du Chen first took a look through the eyepiece and found that the moon was in the eyepiece, so he quickly asked Ren Surong to observe through the eyepiece.
"Mom, look! We can see the moon now!"
Ren Surong looked through the eyepiece with a mixture of doubt and disbelief. The scene she saw immediately shocked her. A cold, gray sphere appeared before her, punctuated by craters of varying sizes. Seeing it with her own eyes was completely different from what she'd usually seen on TV or in pictures. Only in the face of the universe did humans feel so insignificant and alone!
"Chenchen, is this the moon?"
Du Chen's mother asked Du Chen beside her in a low voice.
"Well, Mom, this is the moon!"
Du Chen answered affirmatively.
"This is incredible! So this is what the moon looks like!"
Du Chen's mother murmured to herself, "It was the first time I saw the vastness of the universe, and the desolate moon quietly floating in the darkness. The impact was unimaginable."
Du Chen's mother looked at it for a while, stood up, took a deep breath, and then came to her senses.
"Mom, how is it? Are you shocked?"
"Hmm! It's an indescribable feeling. I just feel like we humans are so insignificant!"
"Wife, what's wrong? What do you mean by humans being too insignificant?"
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