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Anonymous users2024-02-06Beijing Galaxy Telescope Answer:
The gap between astronomical telescopes is very large, if you choose for your child, you can choose a low-end non-professional mirror (professional mirrors are very expensive, and they are generally used for professional observation). **Around 1000-2000 yuan, of course, if you are very passionate about astronomy and have high requirements for observation effects, you must choose a high-end telescope, refraction and reflection have their own advantages and disadvantages, mainly depending on what you want to observe, choose the best one for yourself;
The refractive aperture is relatively small, the focal length is relatively long, and the realization multiple is relatively high, which is more suitable for seeing the single planet and details, but it is easy to maintain, simple to operate, and the low-end refractor is relatively cheap, which is more suitable for beginners.
The reflective type has a large aperture, a short focal length, and a relatively low realization multiple, which is more suitable for seeing a large area of the starry sky, with a large observation field and no chromatic aberration, but it needs to be coated once every five years.
The realization multiples mentioned above are relatively speaking, the magnification of astronomical telescopes is directly related to the eyepieces, and the eyepieces that are standard with each model are different and cannot be generalized. For beginner astronomy enthusiasts, it is still recommended to choose the refractive type.
For entry-level astronomical telescopes, the Centron 80EQ (refractive type) and 130EQ (reflective type) are both good choices.
The 80EQ is a crater that can see the surface of the moon, Saturn, Jupiter, Jupiter's moons, etc., and can also view the scenery, and can see the trademark of the air conditioner for one or two kilometers. **Around $850.
130EQ can see the craters on the surface of the moon, Saturn's rings, Jupiter, Jupiter's cloud belts, Jupiter's moons, etc., and 130EQ is basically a civilian astronomical telescope that can shoot nebulae with the lowest aperture requirements after being connected to the camera. **Around 1500 RMB. The relative aperture of 130EQ is large, and the observation field is large.
You can go to the Galaxy Telescope Knowledge Zone to see, you can directly search for "Galaxy Telescope", there is a lot of relevant knowledge about the purchase, maintenance and use of telescopes.
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Anonymous users2024-02-05If you want to use it for children, you should buy Boguan or Xingtron's entry-level level. Phoenix, panda try not to choose, the quality is very poor.
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Anonymous users2024-02-04Founded in 1939, Yunnan North Optical Electronics Group, formerly known as the 22nd Factory, is the first optical factory in China, the birthplace of Chinese optics, the cradle and hometown of Chinese optics, and has created countless firsts in the history of Chinese optics. China's first telescope, the first artillery sight, the first infrared image tube, China's first low-light image intensifier, and China's first low-light night vision device have made great contributions to the development of China's optical industry.
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Anonymous users2024-02-03High-end, mid-range or low-gear? Trailblazer.
First of all, you have to know what you want to see, the planet Deep Space Hoshino? >>>More
It's not high, if it weren't for his automatic star search, it would be equivalent to a telescope of 500 yuan. Automatic star hunting isn't very useful, unless you're the kind of enthusiast who uses tens of thousands of dollars of equipment to shoot galaxies and nebulae all night. Every time you go downstairs for astronomical observation, holding a telescope for automatic star searching, you need to spend dozens of minutes to enter the time, enter the coordinates, align the north, horizontal placement, N star calibration and other complicated steps, in order to automatically find the star, and this low-end automatic star search theodolite accuracy is often very low, sometimes the automatic star search is not accurate. >>>More
Friend, after reading the ** you sent, I can tell you that the effect of these pictures is not reached, and it is not enough to see only a small bright spot, but it is almost, you can still vaguely see that there are two small edges and corners next to the stars, which is a graphic halo, but it is impossible to distinguish that it is a ring, such a telescope can only be used for sightseeing, at most you can see the lunar crater, if your main purpose is astronomical observation, such a telescope you will regret when you buy it! Break a leg!
I said, don't you want your own eyes, as long as the telescope is not standardized, the impact on the eyesight is great, not to mention the astronomical telescope, I advise you to buy a regular one, you can go to Wuhan Rongcheng Technology that telescope ** to see, how to say that it is still the most important thing in your body, not to mention whether there are materials, and the materials are not standardized, it is very difficult to make alone, it is a fine job, otherwise why would the telescope sell so expensive.
A large-aperture convex lens (with a long focal length) is used as the objective, and a shorter focal length (the shorter the better) is used as the eyepiece. If you want to multiply, put a concave lens between the eyepiece and the objective.