Is it okay to mistake Venus for the moon? If Tsuchiya wasn't right next to him, he would have thought it was some astronomical joke.
"Why can we see the moon through the telescope but not in the sky?" asked Tsuchima.
"Look more carefully, is that the moon?" Yushan Heren couldn't help but grin.
Tsuchima moved closer to the eyepiece again: "It's the moon, for sure. It's moving!"
"Is the moon you usually see so small?" Yushan Kazuto blinked.
Doma Mai suddenly felt something strange. The moon in her field of vision was indeed very clear, but it was still smaller than the moon she usually saw, and there didn't seem to be as many shadows as the moon.
Suddenly, Domama realized that this was an astronomical telescope, and what one saw through the astronomical telescope must be many times larger than what one saw directly with the eyes.
In other words, the moon in my eyes now is actually a... star!
"Have you figured it out?" Seeing Domama's slightly flushed cheeks, Yushan Kazuto couldn't help but smile.
"That scumbag senior didn't tell Koumeiro in advance." Doma Mai couldn't help but pout slightly.
"Can you blame me for this?" Yushan Heren shrugged.
"It's all your fault! It's all your fault!" Doma spoke repeatedly, but his voice seemed to be getting smaller and smaller, which made Yushan Kazuto laugh.
"That is Venus. It is dusk now, which is Changgeng Star." Yushan Heren said.
"Evergreen?" Domama blinked and moved away from the telescope.
Looking in the direction of the telescope, there does seem to be a somewhat dim star hanging in the sky.
"Isn't Venus the brightest star? Why does it look so dark?" said Domama.
"Nonsense, it's not completely dark yet!" Yushan Heren couldn't help but blink.
The sun is still hanging on the top of the mountain next to it, how dare Venus act rashly?
Tsuchima Mai suddenly felt that her IQ was crushed and she couldn't help but pout.
"Then why does Venus look like a crescent in the telescope?" Tsuchima couldn't help but ask.
"Venus and Mercury, like the moon, have phases of waxing and waning, but it's difficult to observe without professional equipment," said Yushan Heren.
"Then...then why do they have changes in profit and loss?" Tsuchima blinked slightly and continued
asked.
"Because the relative positions of the Sun, Earth and Venus change periodically, the hemisphere of Venus illuminated by the Sun that we see on Earth also changes periodically," explained Kazuto Hayama.
"Then? What is the specific cause of this phenomenon?" Doma Mai continued to ask.
"Go look up the information yourself." Yushan Heren said unhappily.
If I explain it myself, Doma Mai can ask three questions. Are we going to talk about everything from gravity to string theory later?
Tsuchiya couldn't help but puff out her cheeks slightly and continued to walk to the telescope to observe.
Although she couldn't see the vast starry sky now, just seeing Venus was enough to satisfy her curiosity.
"Scumbag senior, can I see the sun?" After observing for a while, Tsuchima Mai said on a whim.
"Okay." Yushan Kazuto responded.
"Really?" Tsuchima couldn't help but blink and prepared to aim the objective lens at the sun.
"Yes, but you can only see it once." Yushan Heren shrugged and said.
"What...what do you mean?" Tsuchima was a little confused.
"What it means is that after reading it, you might go blind." Yushan Heren shrugged and said.
Tsuchima couldn't help but glance at Yushan Kazuto and said, "Isn't this scumbag senior trying to trick Yuma-chan?"
"Have you ever seen an experiment of burning leaves with a magnifying glass?" asked Yushan Kazuto.
"Can a magnifying glass burn leaves?" Tsuchima's eyes lit up.
Chapter 1956 Equatorial Mount and Automatic Star Search
"Don't you know the focusing effect of convex lens?" Yushan Heren asked.
Something that a three-year-old child should know, but Tsuchima Mai didn't know, which made Yushan Kazuto blink slightly.
Doma Mai recalled carefully, and she seemed to have had a similar memory when she was young. At that time, there was someone who led Doma Mai to complete the experiment of focusing the convex lens.
But when Domama tried to recall, he felt a sharp pain in his brain and could not help but cover his head.
"What's wrong?" Seeing that Doma Mai suddenly looked in pain, Yushan Kazuto couldn't help but ask.
"No, nothing." Domama shook her head and said in a low voice.
Yushan and Ren couldn't help but blink slightly. The ground was buried, and it didn't look like nothing happened.
However, since the other party was unwilling to explain, Yushan Heren did not ask any further questions.
Tsuchiya blinked slightly, and her eyes gradually regained some clarity.
In fact, it’s not that she doesn’t want to explain, but it’s really hard for her to put it into words.
The memories in my mind are fragmented, with only a few blurry images.
She vaguely remembered a blonde woman who was similar in size to her now, squatting beside her, stroking her head and guiding her to complete the focusing experiment of the convex lens.
Even these few scenes were suddenly recalled by Doma Mai only after Yushan Kazuto mentioned the focusing effect of the convex lens.
Yui Doma didn't know the identity of the blonde woman in her memory, nor did she know the causes and consequences of the focusing experiment, and she didn't even know whether the experiment was successful.
Only a few images played back and forth in her mind. Tsuchima couldn't help but take a deep breath and continued to look through the telescope.
"Scumbag senior, Venus is really gone this time!"
I took a look at the scene in the telescope and this time there was really no trace of Venus.
"Because of the influence of the earth's rotation, the stars in the sky actually have diurnal motion, and their azimuth and altitude change over time, which is more obvious in the field of view of the telescope."
Yushan Kazuto walked to the astronomical telescope and slightly adjusted the angle of the telescope. Venus reappeared in Doma Yui's field of vision.
"If you want to observe a star for a long time, you can turn on the equatorial mount and use it to offset the impact of the earth's rotation." Yushan Kazuto said.
"Equatorial mount?" Tsuchima couldn't help but blink slightly.
"When shooting time-lapse images of the starry sky, an equatorial mount is often used. This telescope has a built-in equatorial mount function, so we can just turn it on." Yushan Kazuto said.
Tsuchima blinked slightly, raised her head and looked at the small panel beside her.
"Is this the function?" Tsuchima pointed to an icon that resembled a globe.
It’s just a little different from the globes we usually see. The globes we usually see are tilted, but this one is upright.
"Yes, that's it. Just click it and choose to open it." Yushan Heren nodded.
Tsuchima blinked and chose to open it.
After the equatorial mount was turned on, Venus in the field of view did not move any further.
In fact, this is the correction effect of the equatorial mount, which slowly moves the angle of the telescope to ensure that the observed stars always appear relatively still in the field of view.
The equatorial mount of this astronomical telescope has reached the eq6 level, which is enough to observe celestial bodies in deep space.
To be honest, it feels a bit overkill to use it to observe Venus.
"Can you see the other stars now?"
After watching for a long time, although Venus in its waning state is mysterious and magnificent enough, it is still a bit boring to keep looking at it.
"Senior scumbag, can we look at other stars?" said Tsuchimaki.
"It's not impossible." Yushan Heren blinked.
With the help of astronomical telescopes, some stars can be seen even during the day.
However, this is a huge test for star hunting.
After all, it is very difficult to see the stars with the naked eye during the day. Even super bright stars like Venus can only be seen at dusk.
If you use the traditional method of star searching, you need to use a finderscope, but there is basically no chance of seeing stars that are invisible to the naked eye using a finderscope.
However, nowadays, most mid-to-high-end telescopes are equipped with automatic star-seeking functions.
Of course, a large part of them are just a cover. The celestial bodies that can be found are very rare, basically just a few planets in the solar system and the moon.
However, the automatic star-finding function of this telescope is quite good. It can be connected to the matching star map software, and you can select the planets you need from the software to search and track. It can be said that this has achieved semi-intelligence to a certain extent.
Open your phone, download the accompanying star map software, turn on Bluetooth, connect to the telescope, and you’re ready to start star-hunting.
Yushan Kazuto chose a celestial unit called "bigdipper", which is actually the Big Dipper.
Because of its special shape and connections, the Big Dipper has special cultural meanings and names in many countries.
But perhaps the person who named it was not as romantic as the ancient Chinese, so he actually called the Big Dipper "big spoon", which is a bit too straightforward.
The telescope started to rotate automatically. Doma Mai couldn't help but blink slightly, waiting for the telescope to finish rotating before she started observing again.
"What do you see now?" Yushan and others
asked with a smile.
"The scumbag senior told me about the Big Dipper yesterday!" said Doma Mai.
Although it was a little dim, it was still barely visible.
After all, it is already dusk, and it is no longer the time when the sun is scorching and shining brightly on the earth.
If it is daytime, it may be difficult to see the Big Dipper clearly. Of course, if you observe the North Star alone, there is still a chance.
"Later at night, when the Big Dipper can be seen directly, you can observe it again. You may find an unexpected surprise!" Yushan Heren said with a smile.
"Really?" Tsuchima couldn't help but feel excited.
There will probably be some unexpected events, but surprises are not certain.
Because of the imaging principle of the telescope, the stars in the field of view are actually opposite to the actual starry sky in terms of up, down, left and right.
It’s just that the Big Dipper cannot be seen from Tujian now, so this phenomenon cannot be observed.
When the stars appear in the sky at night, Domama will probably be scared.
"Can we observe the North Star directly?" Tsuchima said with a slight blink.
"Yes, each star in the Big Dipper can be observed individually." Yushan Heren nodded.
In the starry sky view, there is a considerable observation distance between each star of the Big Dipper, so you can observe them individually by adjusting the magnification.
Chapter 1957 Do you want to observe the sun again?
However, after adjusting the magnification, some darker stars will appear in the field of view.
However, it is a bit difficult to observe the Big Dipper now, and it is even more difficult to see the stars with lower apparent magnitudes around the Big Dipper.
Pick up the phone, select the North Star as the target, and the telescope will automatically calibrate.
However, this time, the moving range was not as large as before. It was just that while moving, the eyepiece automatically rotated and was replaced with an eyepiece with a higher magnification.
As for the objective lens, it is not suitable to be replaced because of its large size.
However, the eyepiece is small in size and can be replaced very easily. Just rotate it slightly to switch.
Looking at the North Star becoming clearer in front of her, Tsuchima was a little surprised and began to observe it more excitedly.
"Can Yumi-chan also switch the stars by herself?" As she watched, Yumi-chan couldn't help but ask.
"Sure, just download the accompanying star map software and connect it to Bluetooth." Yushan Heren nodded.
"Stupid senior, please tell Komari how to download it!" Domama Mai took out her cell phone and said excitedly.
"Just scan the QR code on this cloth cover to download it." Yushan Kazuto took out the waterproof and sun-proof cloth cover that came with the telescope.
"The star map software is all in English, not Japanese, but it shouldn't be difficult for you to use it, right?"
Tsuchiya Mai blinked slightly. When she first heard it, she was still a little worried.
However, when he saw the operation screen of Yushan Kazuto before, there were patterns on the star map software, so Doma Yui was relieved.
After all, Doma's English is quite good, at least much better than Eriri's.
Even if you don’t know some English words, you can still guess their meanings through the pictures. If that doesn’t work, you can look them up in the dictionary or change a star.
