one,How to buy a applicable binocular Telescope

Three directions of the consideration of the two -Tube Telescope without external diameter, magnification, and lens quality:

CaliberTheThe size (diameter or caliber) of the objective mirror (lens in front of the Telescope), The double -Tube Telescope on the market is used to use it20mmto70mmThe diameter is more common, such as the label on the Telescope12 x25Of25The representative diameter is25mm(2, 5Cm.,,12It represents its magnification, the larger the caliber, the larger the volume, and the light power of the caliber and the Telescope(Brightness) Calling portrait (clarity)There is a great relationship,12 x 25and12x50Two dual -microscopy is also the same12DoubleBut the latter's brightness and sharpness must be higher than the former.

When you consider the diameter of the dual -Tube Telescope, there are nothing more than two options:

1. If you are ornamental concerts, various ball competitions, mountain climbing, outing travel, etc. to facilitate the use of priority, it is best to choose small and medium -caliber (35mmthe following) The model, the size of the size is also light, but it is inevitable that the brightness and resolution will be sacrificed.

2. If it is astronomical observation, night or long -distance observation, etc. with high brightness and high -solution image as the first priority, choosing a larger caliber will be ideal.Most of the binocular Telescope already has a tripod fixed -hole design, which can be fixed on the average camera tripod. It can not only reduce the burden on both hands, but also greatly improve the stability.

High and lowTheGenerally, consumers mostly consider the multiplier when choosing a Telescope. The higher the ratio, the better. In fact, it is not correct. The high rate does not represent the clearer image and the caliber is larger.The biggest advantage of the Telescope is that it is easy to carry and has high maneuverability. If the long -distance observation requires a higher power rate, it is recommended to choose a single -Tube Telescope effect.

lens qualityTheThis item can be considered the most difficult to understand in the average person. A two -Tube Telescope optical part is:1. object mirror.2. Eye mirror.3. Prism.Combined, let's talk about it first:

1. object mirror:That is, the lens closest to the target of the two -set lens barrel at the front of the two sets of goggles. The image is directly related to the quality of the objective mirror. Generally, most of the products are combined with two lenses.The Telescope uses three combinations, or uses itED, Fluorite and other special material lenses to reduce the effects of color differences.

2. Eye mirror: When using a Telescope, the lens group near the eyes is called the eyepiece (left and right eyes), Typical eyepiece is composed of three optical lenses. The vision of the eyepiece itself is about50Around the degree, the actual field of vision is to divide the eye mirror vision. If the same multiplier twin Telescope mirror, if you want to have a large field of vision, and maintain a good image around the field of vision, you need more lenses, more complex design to correctThe price is relatively improved.

3. Prism:If there is only a combination of objective mirrors and eyepiece, the imaging of you see is reversed, so a set of positive prisms need to be added on the light path between the objective mirror and the eyepiece.In the normal direction, the material of prism is generallybak-7glass, higher -level models will choose high refractive indexesbak-4The prism makes the image brighter.The two -Tube Telescope design must be used with a roof spine prism(ROOF PRISM), the production is more difficult, and the price is usually relatively high.

The above optical common sense, I believe it will help, the last three principles for your reference when you choose:

First, when you consider carrying convenient carriers and choose small models, the multiplier rate should not be too high, otherwise you may be disappointed because the brightness is too low.

2. You must understand what the purpose of using a Telescope?It is the best choice of one that suits you need.

3. Find a professional company to tell your purpose and budget in detail. I believe that as long as you are a professional company, you will definitely give you a satisfactory service.

Second, the tips for buying a bilateral Telescope

1. Trip tips for buying a long -range optical effect

Generally, when we buy a Telescope, we will see the same specifications of the Telescope. The price is very different. This is mainly because the lens of our Telescope is different because it affects the quality of the Telescope optics.The brightness of the general Telescope is the highest, and the brighter it means that it can see further.

The better the lens coating, the more transparent the lens, the darker the reflective.There is also a red film Telescope. The red film of the lens not only increases the brightness of the Telescope, but also makes the imaging more similar. Everyone can also choose this type of Telescope.

2Functional purchaseTips

The internal nitrogen of the Telescope has a water effect, and it can also prevent the fog of the internal lenses and the mold. This is mainly because the Telescope is seal, so this increases the durability of the Telescope.Talk about the advantages and disadvantages of different prisms of the Telescope, generally there arePorroPrism and prismroofPrism.PorroAlthough the prism is large, the structure is simple, the light transmission rate is high, and the imaging quality is good.androofThe prism, although the volume is small, but the structure of the prism is complicated and the light transmission rate is low.

3. Buy a Telescope workmanship and materialTips

1. 1.It is made all plastic.

2.It is mixed with plastic and metal, and its main parts are made of metal materials.

3..It is made of all -metal. This is the best durability of the Telescope in the three materials.

1. Who invented the first Telescope in the world

In 1608, Hans Lippershey, Midelburg, the Netherlands, created the world's first Telescope.Once, the two children played with a few lenses in front of Li Poore's shop. They watched the trend in the distant church through the two lenses before and after, and they were highly high.Li Populia picked up two lenses and looked at it, and the turbines in the distance were enlarged a lot.Li Poor ran back to the store and put two lenses in a Tube. After many tests, Hans Lee Polm invented the Telescope.In 1608, he applied for a patent for the Telescope he made and followed the requirements of the authorities.It is said that dozens of Telescope glasses in the town claim that the Telescope has been invented, but it is generally believed that Hans Lipor is the inventor of the Telescope.

The news of the Telescope invented quickly spread in European countries. After the news of Italian scientist Galileo learned the news, it made one.The first Telescope can only enlarge the object by 3 times.One month later, the second Telescope he made can be enlarged by 8 times, and the third Telescope can be magnified to 20 times.In October 1609, he made a 30 -fold Telescope.Garri used a self -made Telescope to observe the night sky. For the first time, the surface of the moon was discovered, covering the mountains and the cracks of the crater.Since then, the four satellites of Jupiter and the sunspot movement of Jupiter have been discovered, and the conclusion of the sun is turning.

Second, astronomical Telescope isWho invented

Almost at the same time, German astronomer Capeller also began to study the Telescope. He proposed another astronomical Telescope in "Kither". This Telescope consists of two convex lenses. Unlike Galileo's Telescope, it is wider than Galileo's visual field.But Capeler did not create the Telescope he introduced.This kind of Telescope produced for the first time from 1613 to 1617. He also created a third convex mirror with a third convex mirror in accordance with the suggestion of Cairple.EssenceSaisa made 8 Telescopes and observed the sun one by one. No matter which one can see the same shape of the sun sunspots.Therefore, he dispelled many people who thought that sunspots might be the illusion caused by the dust on the lens, and proved that the sunspots were indeed observed.When observing the sun, Shanya was equipped with a special Shading glass, and Galileo did not add this protection device. As a result, he hurt his eyes and was almost blind.In order to reduce the color difference between the refraction Telescope in the Netherlands, the color difference between the refraction Telescope made a Telescope with a length of nearly 6 meters in 1665 to explore the halo of Saturn. Later, it made a nearly 41 -meter -long Telescope.

Third, who was invented by reflecting Telescope

In 1793, William Herschel, the system made a reflective Telescope with a diameter of 130 cm in the diameter and made of copper tin alloy, weighing 1 ton.

In 1845, the reflex Telescope made by William Parsons in Britain, with a diameter of 1.82 meters.

In 1917, Hooker Telescope was completed in Wilson Observatory, California, USA.Its main reflexive diameter is 100 inches.It was using this Telescope that Edwin Hubble discovered the amazing fact that the universe was expanding.

Fourth, who invented the refractive Telescope

In 1930, the German Bernhardschmidt will reflect the advantages of refraction Telescope and reflecting Telescope (the refractive Telescope image is small but the color difference and the larger the size, the more expensive the reflected Telescope, the low cost, and the reflex mirror can be made very large.But the existence) combined into the first reflection Telescope.

After the war, the reflective Telescope developed rapidly in astronomical observations. In 1950, a Hale reflecting Telescope was installed on the Paloma Mountain.

In 1969, a 6 -meter -diameter reflex mirror was installed on Mount Pastulfv in the former Soviet Union.

In 1990, NASA sent the Hubble Space Telescope into the track. However, due to the mirror fault, the Hubble Telescope did not fully play its role until 1993 that the astronauts completed the space repair and replaced the lens.Because it can not be disturbed by the atmosphere of the earth, the image clarity of the Hubble Telescope is 10 times that of the image of similar Telescopes on the earth.

In 1993, the United States built a "Kake Telescope" with a caliber of 10 meters on the Monakia Mountain in Hawaii. Its mirror was composed of 36 1.8 meters of reflectors.

In 2001, the European Southern Observatory in Chile developed the "Very Large Telescope" (VLT), which consists of 4 Telescopes with a diameter of 8 meters. Its conservation capacity is equivalent to a 16 -meter reflected Telescope.

On June 18, 2014, the top of Cerro Amazones, Chile, was used to place the world's largest power Telescope "European Grand Astronomy" (English abbreviation E-art).Salo Amazon is located in the Atacama Desert with an altitude of 3,000 meters.E-In the Eye of the world, the "largest sky in the world", is nearly 40 meters wide and weighs about 2,500 tons. Its brightness is 15 times higher than that of a long-distance mirror, and its clarity is 16 times that of the Hubble Telescope.The Telescope costs 879 million pounds (about 9.3 billion yuan), which is expected to be officially put into use in 2022.

A group of Telescopes that were under construction began to impact the white giant brothers on the Monakia Mountain.These new competitors include the 30 -meter -caliber "Thirty Meter Telescope (TMT), 20 -meter -caliber Giant Magellan Telescope (GMT) and a 100 -meter -caliber (GMT).Overwhelming Large Telescope, referred to as OWL).Their initiative pointed out that these new Telescope can not only provide space pictures like a photo of the Hubble Telescope, but also collect more light.There are more understanding and see the planets around the distant stars.