Xiao Dezi is an astronomy enthusiast and the host of Station B. He was browsing Goudong.com this day.
See if there are suitable astronomical telescopes available for purchase.
The astronomical telescopes that have a relatively good reputation are none other than Celestron and Midea, which are relatively well-known international brands.
The types of astronomical telescopes in these companies are quite rich. In addition to traditional refractor telescopes, there are also Newtonian-reflecting telescopes (Nitroscope), Schmidt Ka telescopes (Schka), and Maksutov Ka telescopes.
These types of Segrin telescopes (Macca).
A refracting telescope is a telescope that uses a lens that condenses the light of distant objects to produce a real image as the objective lens. It refracts the light from the distance and concentrates it at the focus. It is also easy to use and has sharp imaging. According to the optical design, APO is the best and is suitable for beginners.
Used by scholars.
The Niu mirror was invented and designed by physicist Xiao Niu. It is composed of a parabolic primary mirror and a planar secondary mirror. It has a simple structure and high image contrast. However, the primary mirror is easily affected by smoke and dust and is difficult to maintain. p>
Shika mainly uses a spherical concave mirror as the primary mirror to eliminate coma aberration, which is suitable for starfield and nebula photography.
Maka uses a thick half-moon corrected lens with a large curvature and a second reflector. The second reflector is very small. Compared with Shikar, it has better performance in observing planets.
However, it is also slightly heavier and has a diameter exceeding 90mm. The time to reach thermal stability will increase and requires thermal balance before use.
Each of these astronomical telescopes has its own advantages and disadvantages, that is, some are electronic and automated and are more expensive.
But as long as it is genuine, you can basically see the moon clearly.
"Celestron's Shika with automatic star finding device is a bit expensive. The standard version of Deep Space Professional Edition costs more than 50,000 soft coins."
Xiao Dezi frowned.
If he buys this, his wallet will be empty.
Although he himself has a little money, he has been working for several years and his monthly salary is 7,000 to 8,000 yuan, but it still has a certain financial burden on him.
After all, the Shikar telescope costing RMB 30,000 to RMB 40,000 is not something he can produce at once.
And you don’t have to pay rent. The rent here in the mountain city is not cheap either.
"Forget it, let's see if there are other brands or other types."
Xiao Dezi sighed.
I decided to continue searching for other better brands to see if there are any domestic brands to replace them.
It’s just that the current domestic brands of astronomical telescopes are more suitable for beginners. They are okay for viewing the moon and the sun, but they are not flattering if you want to see deep sky objects.
Because the accuracy of equatorial mounts from these manufacturers and the structure of the primary mirror are still somewhat behind those of these international famous brands, and the quality level is also uneven.
For example, the Pleiades star cluster, the Andromeda galaxy or some relatively bright star clusters, as well as some relatively dim celestial objects that require long exposure, are more difficult to observe with these domestic astronomical telescopes.
Therefore, professional deep space astronomical telescopes are needed, and the quality requirements are relatively high.
Although Celestron also has other models of Shikar telescopes, which are slightly cheaper, the configuration and performance are different.
For an astronomical enthusiast like him who is picky and has some experience, it is natural to buy one with good quality and better observation performance.
Otherwise it would be a waste of money.
Xiao Dezi manually entered the words "Shika Astronomical Telescope", and as a result, Goudong showed many types. Except for some officially certified ones, they were basically no-name brands.
So he switched to the store to search.
"Chongming Bird? Why does it sound so familiar?"
Xiao Dezi was suddenly taken aback and noticed this Chongmingniao official flagship store, which also had the official logo of corporate certification on it.
However, judging from the number of followers, there are only 5,000.
After clicking in, he found that the optical products on the shelves of this store actually had two astronomical telescopes, one Niu reflex and one Shika (equipped with automatic star finding device). They were the NGT-1 and SGT-1 series, both with
The equatorial mount can be connected to a mobile phone or computer to display observation images.
However, the former does not have an automatic star finding device. If you want to install it, you can contact customer service and you will need to pay extra. The same is true for other configurations.
The basic selling price of Niufan starts at 2233, while the basic selling price of Shika model starts at 22333.
Both astronomical telescopes use the company's latest honeycomb compound eye lens technology, which can achieve depth of field effects for starry sky observation.
The structure of Niufan is basically similar to those on the market, but Shika uses an optical astronomical lens structure system independently developed by Suiren Technology. You can voluntarily choose to increase the price, and you will have unexpected surprises.
"It turns out to be from Suiren Technology. No wonder it looks so familiar to me!"
Xiao Dezi thought about it. He also saw the launch of Huawei P5 mobile phone on the Internet yesterday. To be honest, this new compound eye optical lens also surprised him. If his wallet didn't allow it, he would have wanted to change it himself.
I have this old thing in my hand.
Because he has been using this phone for several years and wants to replace it.
But I didn’t expect that Suiren Technology also makes astronomical telescopes, and it seems to also apply the latest compound eye lens technology.
There are no promotions in this store, only a few pages of picture introduction, and almost no reviews. I guess the store has just opened and has just launched a new one, and I don’t know how it performs?
"How about buying it and trying it?"
This price is basically acceptable to him. With some combinations, even if it adds its own independent optical development system version, plus the express fee, it will only be 29,000. It is not nearly 50,000, or even 70,000 or 80,000 like Celestron.
So expensive.
After struggling for a while, Xiao Dezi decided to buy it and give it a try.
After all, the performance of the mobile phone lens displayed by Suiren Technology at the press conference was pretty good, so it should also be good on an astronomical telescope~
"Then place the order. Even if it's not good, you can return it within a week!"
Xiao Dezi gritted his teeth and decided to buy it in installments.
After placing the order, a message will be sent here.
[Hello, welcome to order the Chongming Niao Shika Astronomical Telescope (Optical System Independent Edition), now confirm your address and electronic signature, we will ship it to you as soon as possible within five days!]
Xiao Dezi clicked confirm without hesitation.
Then it enters the process of waiting for shipment.
At the same time
The products just launched in Chongmingniao’s Goudong store and Taomao store also attracted the attention of other product enthusiasts.
Of course, these products do not include colonoscopes, because colonoscopes are medical devices and relevant units are not allowed to sell them on e-commerce online platforms.
If you want to trade, you can generally only find it on the government's official website or the company's official website, as well as the database of medical intelligence devices that have been authorized by the government.
If you want to trade, you can only apply on the website of the government department, or directly go to the website of the medical device to contact the purchaser.
If it is the kind of endoscope that belongs to industrial testing such as circuit maintenance, it can be sold on major e-commerce platforms. However, the review and control of such medical device transactions in China are quite strict.
This is also to prevent certain potential medical risks. If some people seeking death use these medical devices to mess with them, it will easily cause life danger and also trigger a public safety crisis.
However, the laser confocal microscope is a scientific research instrument and can be sold online to a certain extent as long as the sales unit holds relevant corporate certificates.
Some enthusiasts, schools and even research units who are interested in biological research can purchase it.