I d like to buy a telescope and help with advice

The refractive type is suitable for beginners, it is easy to operate, the diameter used by beginners is generally 70-90mm, it is easy to carry, and it is not easy to change the moving time axis. Although slightly higher, the imaging quality is excellent. For novices, the first Xingtran 80EQ, with a German equatorial mount, can be done within 1000, and the effect is not much worse than 90EQ, and the money saved can buy a 7 50 or 8 42 binoculars with surveys.

Reflectors are generally not recommended for novices, and for beginners, the reflective type has an advantage that it is lighter and has a shorter barrel than the refractive type of the same aperture, making it easy to carry. Moreover, the advantage of reflecting telescopes is that the images are clear and bright, and for the same money you can buy a telescope with a larger aperture than a refracting telescope.

However, compared to refracting telescopes, the optical axis of reflective telescopes is prone to change. Since the tube of the mirror is not sealed, it is easy to generate air flow in the lens barrel, so it should be taken outdoors 1 hour before observation to adapt to the outside air, etc. For novices, the mirror dimming axis is a difficult task, and the mirror requires a degree film, which is also not an easy task for novices.

The optical axis of the mirror is very unstable, the stars on the axis are sharp, there are serious aberrations outside the axis, and the main mirror of high-end ones such as Schmidt-Newton and Maksutov-Newton is spherical (rather than the parabolic one commonly used), and a glass-shaped Schmidt correction mirror is used at the front of the lens barrel to correct the spherical aberration.

The biggest advantage of reflection over refraction is chromatic aberration and **. Refraction has chromatic aberration due to different refractive indexes, and reflection can be avoided. The refractor can be reduced by using high-grade APO structure and ED glass to achieve almost zero chromatic aberration, but only this group of lenses (calculated according to 127mm) can easily cost tens of thousands of yuan, and the reflection of the same caliber is only two or three thousand yuan.

When I went to Wuhan to watch the solar eclipse last week, I wanted to buy a wide-angle eyepiece, and I ran most of Wuchang and didn't sell telescopes, I don't know if Hankou and Hanyang have any, so it is recommended to order online. It is very safe to contact the manufacturer directly or find a ** seller with a relatively high reputation, there will generally be no quality problems, and it is much cheaper than buying in the store. 80EQ is difficult if it is 1300 in the specialty store.

1000 yuan of the king of heaven telescope. I dare not say the effect I have to spend a lot of money to buy a good camera to shoot celestial bodies I hope you can choose the right one There are also many brands on the Internet, and tasco is also good, you can search for it

Panda 114 1000 bar.

The optical factory is out, this one is good.

Boguan is better than binocular, and astronomy is not very good.

1. For telescopes with the same specifications and parameters, the actual effect may be very different and cannot be selected.

2. The quality of the telescope depends on many external factors, such as cost, profit, and market strategy.

Wait, ** too high is not necessary to choose.

3. Do not buy binoculars with a wide range of zoom, there is a small field of view, serious imaging distortion, and optical axis.

It is easy to offset and many other problems.

Here's how to select a telescope:1. SturdinessTelescopes are mostly used outdoors The plastic shell is not very protective, and it is easy to shift the prism group due to excessive temperature change, so it is necessary to know the parallelism of the binocular visual axis.

As long as there is a slight deviation, using it for a long time can cause eye fatigue and discomfort, and even headaches.

I want to throw up. 2. Weight and feelThe telescope should not be too heavy, otherwise it will make people tired after a long time of use, make the hands tremble and unable to see the target clearly, and the telescope should not be too light, otherwise it is easy to operate and watch stably due to shaking. Swarovski with ergonomics.

The products all enjoy a good sense of balance and first-class feel, so that their optical performance can be fully exerted.

3. Magnification (should be between 8 times and 10 times).The telescopes are marked with the words 10x42'8x30, the former representing magnification and the latter representing the objective diameter. Looking at a bird standing at 100 meters with a 10x telescope is as close as seeing it at 10 meters with the naked eye.

The above content refers to the Encyclopedia telescope.

1. Aperture: The size of the aperture determines the size of the light collection force, and also determines the level of the resolution (the larger the aperture, the stronger the light collection force, the higher the resolution, because the resolution angle = wavelength effective aperture, so the larger the aperture, the smaller the resolution angle, that is, the smallest angle that can be resolved, then it will appear clear), so the choice of aperture should be considered.

2. Focal ratio: focal ratio refers to the focal length (I think you know it, it is often used when the camera is used) divided by the aperture, which determines the size of the field of view (the area of the sky that can be shown in your eyepiece) at the same magnification, if you want to see a large celestial body such as a planet, it is recommended to buy a large focal ratio, such as f 10 or even 20 (f refers to the focal ratio, which will not be marked on the telescope, you need to calculate it yourself, but it is very simple, the first sentence of the algorithm has been.) If you want to see deep-sky objects, it is recommended to use a small focal ratio.

3. Regarding the magnification mentioned by the landlord, this is actually not very useful. The magnification is related to the focal length of the eyepiece and objective lens of the telescope, and the general objective lens is fixed, so the magnification can be adjusted by changing the eyepiece. In any case, you don't need to consider the magnification of a telescope, which doesn't make much sense, and the magnification will also have a certain effect on the resolution of your telescope, because it will magnify the effect of atmospheric disturbances.

So I don't think landlords have to care about magnification.

The landlord seems to be a beginner, right? Then I recommend using a 90-130mm aperture refracting telescope or a reflecting telescope with a focal ratio of about 4-6, which is a universal telescope, that is, it will not be biased towards observing planets or deep-sky objects. The current brands of Xingtran and Innovent are very good, after all, the quality and coating of the lens affect the optical performance, which is very important.

The landlord can go to ** and wait for a place to see, and then make a decision.

If you buy a refractor, chromatic aberration is also very important, and it is more convenient to buy binoculars for ordinary use. Three or five hundred should be able to solve, and it is best to buy a brand with good evaluation. You don't have to deliberately pursue magnification, generally no more than 10 times, binoculars are too big, not easy to hold steady, easy to shake when observing.

If the telescope is a little bigger, you can buy an adapter for binoculars and set it up on a tripod to observe.

To put it simply, telescopes can help people see things and things that are not visible to the naked eye in the distance.

In fact, telescopes are used for many purposes, such as:

1. Meeting, drama, sports, outdoor activities, etc.

2. Bird watching. 3. Outdoor games on large fields such as football.

4. Tourism, mountaineering and leisure.