Laser ranging Telescope is a measuring instrument that integrates the species observation and measurement of the laser rangefinder and the long -distance system., Human -machine interface modules and communication modules are composed of several parts.

one, Laser ranging Telescope principle

Laser ranging Telescope generally uses pulse method to measure distance.The process of the pulse method of the pulse method is this: the laser emitted by the ranging meter is accepted by the ranging meter after being reflected by the measured object. The ranging meter also records the time of laser round trip.Half of the speed of light and round -trip time is the distance between the rangefinder and the measured object.

In areas where accuracy requirements of outdoor sports and ballistic calculations are generally adopted/-1 Ordinary laser rangefinder about rice.

In areas where high demand such as construction, land measurement, power monitoring, and engineering measurement are generally used, high -precision laser ranging meters are generally used. At present0, 3 rice.

In addition, because the laser rangefinder needs to ensure the accuracy of the optical system and the laser system in a wide measurement, there is usually a blind spot. At present, the good range of ranging Telescope can be achieved.3, 5 Mi, the general ranging Telescope is 10 arrive 15 Mi is not waiting.

two, Laser ranging Telescope application range

Laser ranging Telescopes are widely used in terrain measurement, battlefield measurement, tanks, aircraft, ships, ships and artillery to target ranging, measurement of clouds, aircraft, missiles, and height of artificial satellites.It is an important technical equipment that improves the accuracy of tanks, aircraft, ships and artillery.Due to the continuous reduction of the price of laser ranging Telescope, the use of laser rangers has gradually begun to use in industries, which can be widely used in industrial surveying and controlling, mines, ports and other fields.

The ranging Telescope is a type of laser rangefinder, or a long -distance laser ranging meter.The measurement distance of the ranging Telescope is generally400-3000 rice.

The ranging Telescope, as the name implies, is also a Telescope, but it is just a laser ranging Telescope.Therefore, the ranging Telescope is divided into single -cylinder ranging Telescopes and bispenton ranging Telescopes.

Single -cylinder ranging Telescope is generally a few hundred- Thousands of yuan.The price of dual -Tube ranging Telescope is generally 10,000 yuan or above.

three, How can I choose a ranging Telescope that suits you?

Several important parameters of the ranging Telescope:

1, Measurement distance: This is the main indicator of the ranging Telescope. Only the Telescope can be measured at the farthest. The measuring distance of the Telescope is generally400-3000 Mi, this distance refers to a straight line distance from the measurement location to the measurement target.There is also an important indicator in the back, the horizontal distance (these two concepts must not be confused).The measuring distance of the ranging Telescope is generally theoretical measurement distance, which will be affected by the weather.So when you choose a ranging meter, you should choose the longest measurement distance than your actual requirements. 20% Left and right ranging Telescope.

2, Measurement accuracy: The accuracy range of the measurement of the distance mirror, the measurement accuracy of the ranging Telescope on the market is generally1 Mi, some of the measurement accuracy of high -precision ranging Telescope can be achieved 02 Mi, for example, Tuyad from the left YP-1000H PRO The measurement accuracy is achieved 02 rice.

3. Whether you can measure high: Whether you can measure the height, many rangefons have this function, so this ranginger can also be called a high meter.The other concept is the absolute height of the measurement target. Do not confuse these two concepts.

4. Whether you can measure angle: Whether the angle can be measured, many rangefinder with this function, so this ranging meter can also be called an angle meter.

5. Whether the target is absolutely height: unlike the concept of high measurement mentioned earlier, it refers to the height of the target itself. This is the function of the high -end rangefinder.

6. Whether the horizontal distance can be measured: The measurement distance mentioned earlier refers to the measurement location to the straight line distance of the measurement target, and the horizontal distance refers to the horizontal distance from the measurement location to the measurement target.These two distances are different.This is the function of the high -end ranging meter.

7. Whether continuous ranging: continuous ranging is very useful in many cases, so this function is also very important.

8. Whether it can be continuously measured: The function of continuous angle measuring angles will have this function on some high -end ranging Telescopes.

Understand the above distance mirror8 Big important functional parameters, you can choose according to your needs, because the ranging Telescope is a measuring Tool. Under the circumstances of economic conditions, it is recommended that you choose a full -range ranging telescopeUsed under work.

Telescope Buy Young Specialty Professional Profession

Telescope choice

Purchase by the environment

If you think of travel at sea or seaside, don't forget to buy a waterproof Telescope.

If you want to go out for tourism, you can buy a small Telescope with a small volume.

If you intend to go to the dangerous areas that can be seen from a distance but not to detect ", you should buy a high -multiples Telescope.

If you want to hunt or travel for a long time, it is best to buy a variable multiples Telescope, which shows how it uses it.Because the changeable Telescope can be gradually adjusted from the low multiplier to the high multiplier, the low multiplier and large field of view should be used for roughly when used, and then carefully observed with a high multiplier and small field of vision.

What are the terminals?

caliber

This is the most important factor when choosing an astronomical Telescope. The primary function of the Telescope is to collect light. No matter how much the magnifying magnification, the better the imaging.The diameter of the Telescope is to expect the glass diameter of the remote mirror or the main lens size, which is represented by millimeters or inch.The greater the diameter, the stronger the ability to collect light, the better the imaging.The larger the diameter, the clearer the details of the picture. For example, when observing a spherical nebula of a M13, a 4 -inch caliber Telescope needs to use 150 power supply, but the 8 -inch caliber Telescope also uses the same ones with the same ones.Power, but Nebula images are 16 times clearer than 4 inches.Even the stars under the weak light can be seen clearly.Considering that the user needs a long -caliber Telescope as much as possible, a large -caliber Telescope.The photos taken by a large -diameter Telescope have higher contrast, better resolution, and clearer.The Cyruster Telescope has "5 -inch caliber", "8 -inch caliber", "14 -inch caliber".

Discerning ability

This involves "Douas restrictions".The distinction between two tight twins, theoretically the ability to distinguish the Telescope is determined by 4.56 to remove the caliber of the Telescope.For example: a resolution ability with a diameter of 8 -inch is 0.6 (4.56/8 = 0.6) that directly affects the distinguishing ability of the Telescope is the caliber of the Telescope. Therefore, the larger the Telescope, the better the resolution ability.However, the ability to distinguish also depends on the influence of the atmosphere and the acuity of people observing objects.

Pupil diameter

The diameter of the pupil is a circular beam that appears in the case of a Telescope without eyepiece, which is represented by mm (millimeters).Calculate the diameter of the pupil, for example: a Telescope with a diameter of 8 inches (203mm), uses a zoom distance of 20mm eyepiece to place 102 times large, and the pupil diameter is 2mm (203/102 = 2mm).Or you can also use the focus of the Telescope to remove the diameter of the pupil with the focal length of the eye mirror.

Extreme Star et al.

Astronomers use a star and other systems to explain the level of bright stars. A star body is considered to have a certain star. The higher the level, the darker the star.The value of the stars) is about 2.5 times the stars. The darkest star body that you can see with your naked eye is about six -class stars (in the night sky). On the contrary, the brightest star is 0 and the stars (orEven negative values).See the darkest star body with a Telescope (the best time in various environments), that is, the extreme star, etc., the extreme star, etc. directly depends on the caliber of the Telescope.EssenceRoughly calculating the formula of Extreme Star is: 7.5 5 LOG (represented by CM).For example: The extreme star with a diameter of 8 inches is 14.0 (7.5 5 log 20.32 = 7.5 (5x1.3) = 14.0).The situation of the atmosphere and the visual acuity of the observer will have an impact on extreme stars.Shooting extreme stars is about two or more than visual limit stars.

Vision

The range you can see when you observe the sky through a Telescope is the field of view, which is represented by an arc angle.The larger the view of the field of view, the greater the observation range. The calculation formula of the perspective angle is that the perspective angle of the eyepiece used is except the finger of the magnification of the Telescope.For example: If the eyepiece you use is 50 degrees, and the Telescope used with the mirror and the magnification of the eyepiece is 100X, then the visual field of the Telescope is 0.5 degrees (50/100 = 0.5).Born manufacturers usually specify the corners of their eyepiece. In general, the larger the viewing corner, the larger the view of the field of vision, because the more you see when you observe the starry sky. In addition, the more, Using a low -magnification astronomical Telescope is wider than seeing the high magnification.

Ancient Chinese celestial observation instruments

armillary sphere

Age: Western Han Dynasty

Function: Hun Tianyi is the general name of Hun Yi and Xiangxiang.Hun instrument is a kind of instrument that measures the sphere of celestial body, and the image is an instrument used to demonstrate the phenomenon in ancient times.

Existing location: Nanjing Zijin Mountain Observatory

Brief

Dynasties: Yuan Dynasty

Function: Measure the location of the celestial bodies.The structure and use of Jianyi are simpler than Hunyi, and except near the Arctic Star, the entire sky is unobstructed, so it is called Jianyi.

Existing location: Nanjing Zijin Mountain Observatory

Ritual

Age: Yuan Dynasty

Function: Observation instruments with direct projection methods are very intuitive and convenient.

Existing location: Beicheng Star Watching Terrace, Zhaocheng Town, Dengfeng City, Henan Province

Daybish

Dynasties: spring and autumn Period

Function: It is the instrument when observing the Japanese filmmark. It is mainly based on the position of the day shadow to specify the time or the number of times at that time. It was a more commonly used chronograph instrument in ancient my country.

Existing location: National Museum

Watt

Dynasties: 20th century BC

Function: It is a astronomical instrument that measures the length of the daily shadow. It consists of two components: "Gui" and "table".

Celestial body

Dynasties: Qing Dynasty

Function: The ancient name of "Xiangxiang" was an instrument used to demonstrate the phenomenon in ancient my country.

Existing location: No. 138, Xizhimenwai Street, Xicheng District, Beijing

Discipline

Dynasties: Qing Dynasty

Function: Also known as the six -point meter or distance meter, it mainly uses it to determine the angle distance between 60 degrees between the celestial bodies and the diameter of the sun and the moon and the moon.

Existing location: No. 138, Xizhimenwai Street, Xicheng District, Beijing

Quadrant

Dynasties: Qing Dynasty

Role: Astronomers usually use quarrels to measure the meridian height of the sun and planets, and then determine the star coordinates of the latitude, the zodiac angle and the observation location.

Existing location: No. 138, Xizhimenwai Street, Xicheng District, Beijing

Equatorial latitude and latitude instrument

Dynasties: Qing Dynasty

Function: It is mainly used to detect the red meridians and redtties of celestial bodies.

Existing location: No. 138, Xizhimenwai Street, Xicheng District, Beijing

Huangdao Jingwei

Dynasties: Qing Dynasty

Function: It is mainly used to measure the eczema and latitude of the celestial bodies and measure the twenty -four Solar terms.

Existing location: No. 138, Xizhimenwai Street, Xicheng District, Beijing

Horizer Jingwei

Dynasties: Qing Dynasty

Function: It is mainly composed of four parts of the ground, the elephant limited ring, the column, and the spare mirror, which is used to measure the horizon coordinates of the celestial bodies.

Existing location: No. 138, Xizhimenwai Street, Xicheng District, Beijing

Horizon

Dynasties: Qing Dynasty

Function: During observation, the lines of the lines at both ends of the celestial body and the horizontal surface are perpendicular to the center on the plane, and the horizon can be set.

Existing location: No. 138, Xizhimenwai Street, Xicheng District, Beijing

Dynasties: Qing Dynasty

Function: It is one of the eight large copper cast astronomical instruments made in the Qing Dynasty and an important astronomical observation instrument in ancient my country.It is mainly used to determine the scales of the celestial bodies, rookie, and true sun.

Existing location: Beijing Guguanxiangtai

Water Yunyi Elephant Channel

Dynasties: Northern song Dynasty

Function: Large automated astronomical instruments that are driven by leakage hydraulic, which integrates astronomical observations, astronomy demonstrations and time -reporting systems.

Existing location: China History Museum

Astronomical Telescope

Astronomical Telescope choice

getting Started

The brand suffixes such as Star Tron, Biguan and other brands are basically an entry-level Telescope. The price is 500-2000 yuan.The sky body is more suitable for beginners.

intermediate

The price of Cinda Xiaohei, Sirius painter, Mide NG90, etc., the price is 2000-5000 yuan. The optical performance and the stability of the bracket are not bad. Generally, it has an automatic star search function, which is suitable for amateur astronomical enthusiasts with some economic conditions.

advanced

Star Tron C8, 8SE, Cinda SC8, 16 -inch DOB and other Telescopes, the price is more expensive, more than 10,000 yuan, it is a weapon for observing deep space such as planets and nebulas, suitable for fever and professional astronomical enthusiasts., Worker.

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Astronomical Telescope accessories

eyepiece

In addition to the effect of astronomical Telescope, the Eyepiece cannot be ignored except for most of the objective mirrors or main mirrors.Choose proper eyepiece to use the performance of the Telescope as much as possible.

Sun filter

Based on parallel plane glass or synthetic resin, the filter plate with metal steaming electricity is installed in front of the material mirror, reflective lens barrel, or Schmida Casserin, as a light reduction.You can use large -caliber observation and do not hurt your eyes, but you should pay attention to the cutting of the filter board when cutting.

Filter

Planet observation with the filter with appropriate colors can increase the contrast on the surface of the planet, so that we can see more surface details.When observing the moon, medium -density filter can reduce the light of the moon, so that we can observe comfortably.

Baro mirror

Putting Baro mirror between the objective mirror and the eyepiece can increase the magnification.The usual Baro mirrors increase the focal length of the object mirror by double or 3 times to 5 times.This is a convenient accessory, but the cheap Baro mirror may affect the image.

Spare prism

The sclineing prism is to reflect the Telescope light shaft of the long mirror by 9 0 degrees with a prism.The larger Telescope will use the reflex mirror surface. One is lighter, and the second is better than the prism.

Star -seeking mirror

It is used to facilitate observer to find a low -twice Telescope used when observing the celestial bodies. First of all, it is necessary to adjust the Telescope with the light shaft of the star -seeking mirror to each other.Essence

Longitude and latitude instrument

It is a type that can move in horizontal and upper and lower directions freely.The structure and usage are very simple, but the tracking of the stars moved by the day and weekly movement is difficult. Two micro -movement rods are operated, otherwise the stars will run away from the field of vision.

Hoshino Equator Instrument

Tracking the celestial bodies that move due to the day and weekly movement, the simple method is to use the equatorial ceremony tablet, which is indeed much more convenient than the latitude and weft instrument.

The top ten astronomical Telescope in the world

1. Gana column large Telescope

The diameter of the mirror surface is 10.4 meters long, consisting of 36 custom mirror hexagonal components, and the installation requires accurate to a range of 1 mm.The establishment of this guy can be said to be burning money, and early investment is as high as $ 175 million.

2. Kak Telescope

Located on the top of Monakia, Hawaii, it is two exactly the same Telescope. They are composed of 36 mirror hexagonal components. The overall mirror diameter is 10 meters, each mirror diameter is 1.8 meters, and the thickness is only 10For centimeters, the mirror surface is highly accurate by active optical support system.

3. Large -scale Telescope in southern Africa

It is composed of 91 mirror hexagonal components. The overall mirror is actually effective in diameter of 10 meters.The Telescope can detect the weak light of the moon distance like a candlelight, and the Telescope was first put into use in 2005.

4. Hobbie Enley Telescope

It is composed of 91 mirror hexagonal components. Each mirror diameter is 1 meter, which is continuously sorted by a small computer control motor.The overall mirror diameter can reach 11 meters, and the actual available is only 9.2 meters.

5. Large dual -Tube Telescope

Large binocular Telescope is referred to as LBT, which is composed of two tightly adjacent 8.4 diameter Telescopes. They can work separately. When the merger work is like a single, larger Telescope.

6. 6 Telescope

The diameter of the Telescope is 8.2 meters, which is a optical/visual infrared Telescope. It has three characteristics: first, the mirror is thin, and the high -precision tracking can be achievedThird, the cylindrical observation room is used to automatically control ventilation and air filter to achieve the best conditions for the exclusion of heat flow.

7. The European Astronomical Observatory is a big Telescope interference instrument

Located on the mountains of Chile, Mount, Chile, consisting of 4 8.2 meters diameter Telescope, each one can operate separately, or forms a very large Telescope interference instrument.This combined astronomy observation can detect cosmic light 4 billion times more visible than the human body.

8. Gemini Telescope

The Telescope located in the northern hemisphere is coordinated with other Telescopes in Monakia, Hawaii. The Telescope located in the southern hemisphere is located on Mount Siro Parana, Chile.Place the Telescope in two hemispheres for easy observation of all -weather systems.

9. Multi -mirror Telescope

Located on Hopson Mountain, Tunson City, Arizona, it is an art -level building. It does not have the dome structure of the traditional observatory.Soon the Telescope cooled down, and then improved the observation efficiency.

10. Magellan I, II Telescope

Two Telescopes are 200 feet apart, located at the height of the Atkama Desert in Chile.The 6.5 -meter diameter mirror of the Telescope floats on a high -pressure oil film, and its friction is small, and even children can promote this 150 -ton Telescope.

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Daily full -food glasses

What do you do

Its core part is a lens and must use a professional light reduction or light reduction film.The light reduction sheet has materials such as metal membrane, polycarbonate, polyester fiber soft tablets and other materials.The ideal Solar light reduction has a maximum transmission rate of 0.0032%(three in 100,000). At the same time, ultraviolet and infrared rays should be effectively filtered.

How to do

Materials: 1 scissors, several double -sided glue, 1 copper sheet paper, 1 floppy plate, 1 pencil

Cut the floppy disk and cut it with scissors into three parts;

Paper folding back for later use;

Draw a 20mm*38mm rectangle of 20mm*38mm.

Use scissors to buckle the interior, and stick a circle of double -sided glue four windows and four windows inside.

Then put the removing things in the soft disk; there is a trick here, first tear off the double -sided glue on the side, put the plate on the side without tearing the double -sided glue, keep the windows all overwritten.Stick up;

Turn off the double -sided glue on the other side and press the two sides to tighten them;

Properly trim the surroundings to facilitate beauty.

How much

Generally, about ten yuan.

Astronomical/Star Guanzi Software

1. Virtual Astronomy Museum (Stellarium)

Calculate the astronomical phenomenon of specified time.The virtual astronomy museum is a more commonly used Tool for astronomical lovers. It is an astronomical phenomenon used in a computer. We can adjust the time and place in it, and then predict the astronomical phenomenon of the day according to the orientation prediction or calculation. For example, you have an astronomical Telescope.You have already seen the moon, you want to find Saturn for a day, but how do we know if there are Saturn Jupiter in the past few days?Virtual Astronomical Museum can do it.

2. Star map

If the virtual astronomy museum is a software predicted before departure, then this star map is used to refer to the astronomical situation at the scene. This is an application on the mobile phone. Apple Android has to download.AR mode, you can use your phone directly to see the star or constellation above your head.

3,Spacengine

4D simulation universe software.Strictly speaking, it is a game, a "Spacengine" on Steam.This game is an astronomical simulator made by Russia's astronomer and programmers combined with massive astronomical real data. It can be said to be the 4D version of the virtual astronomy museum because it has 3D simulation space and VR mode. We can call it first or third.Traveling in the universe.We can not only see some details of the planet, but also some planet's data.

4. Skyview Free

Intuitive and rich information, SkyView allows you to easily start watching the stars; no Wi-Fi or experience search stars, constellations, planets, galaxies or satellites, arrows will guide you to move forward; point your device to the celestial bodies or constellations, and then click to understandIts name and key fact.

5. Skywiki -The World of Astronomy at a Glance

From the daily planet movement to the full food, everything is an astronomical figure; read the latest space news from the source of NASA, and check the daily astronomical photos with information titles; see the upcoming incident, from the moon phase and the meteor rain to the planet connection, and and connect the planet, and and the planet connection, and and the planet connection, and and the planet connection, and and the planet connection, and also connect to the planet, and and the planet connection, and also connect, and connect the planet, and and the planet connection, and connect, and connect the planets, and connect, and connect the planets, and and the planet connection, and and the planet connection, and connect, and connect the planet, and and the planet connection, and connect, and connect the planets, and and the planet connection, and and the planet connection, and and the planet connection, and connect the planet, and and the planet connection.Add them to their personal calendar.

6. Lunescope Moon Viewer

This beautiful, focusing tools suitable for those who want to remain consistent with the moon; observe the moon from your position, you can use a 3D perspective to rotate or move according to time; get daily rising and landing time, phase, track data, Crescent and visibility percentage.

1. What is the principle of night vision Telescope

1. principle

The microscopic night vision mirror (the same is true for the Telescope) to put the faint light, so under the circumstances that there is no light at all, the microcomio is not seen.

2. Principles of infrared night vision Telescope

This is the real military night vision mirror, There are two types of infrared night vision mirrors, one is active, the other is passive, and the active type is the night vision emitting a bunch of infrared rays. Essencequilt The dynamic type is to transform the infrared rays from the object itself into visible light. If there is no infrared source (most things that can generate calories can become infrared, such as creature, vehicles, flames, etc.), passive infrared night vision mirrors can not be seen. And active infrared night vision mirrors can be seen under any circumstances.

Second, night vision Telescope purchase

1. Active infrared night vision instrument applicable people: only at night.The main point of buying: The second generation is much better than the first generation. It is best to choose the second -generation night vision instrument.Try to choose the night vision instrument of your eyes, which is high, and it is much more comfortable to use than a single Tube.

2. Passive infrared thermal image instrument suitable for people: ultra -long night vision distance.The main purpose is to discover the goal, not to see the key points of the target details.

In summary, you must first know your needs. If you use it mainly at night, try to choose the night vision or thermal portrait.There are no two functions a volume, each with its own strengths.This can be practical.

Third, how far can night -view Telescope be seen

Many consumers do not understand this layer of concept. They believe that they can be seen one kilometer or two kilometers like ordinary Telescopes. In fact, these two products are not a concept. They are different.Observation.The principle is different, so when you look at the so -called parameters of the night vision instrument, don't believe in the indicators on the parameters. The most observation distance of the manufacturer's farthest observation generally has a large error and no reference value.Therefore, you cannot determine that the night vision is far away according to the parameters. The situation of the infrared auxiliary Lights is different. The distance of the situation of the infrared auxiliary light is different.In fact, this is very simple, but it is still difficult to explore than novices just exposed to this night vision instrument.Below I will talk about, under what circumstances can the night vision be seen?Under what circumstances is it close?

1 The night vision instrument observes a distance in the case of all black and light light

1) The distance from the micro -light observation is generally based on 1/4 The moon is based on the conditions of the weather. 50-400 Mi, if the weather is darker, or if the environment is harsh, its micro -light observation distance will be closer.At present, even the night vision instrument of more than tens of thousands of yuan can not be observed in the micro -light to reach 400 Above me.The second -generation night vision instrument can only be achieved 200 Du Mi, usually 1000-3000 The night vision around the yuan, its micr -light observation distance is 50 About meters.

2) In addition to the quality of the night vision instrument, the full black observation distance was seriously affected by the infrared lamp distance.At present, the infrared lamps equipped with the night vision instrument are average 50 About meters.Second generation The night vision can be observed under the observation of all black 100 About meters.In our actual use, there are very few all black conditions.For the second -generation night vision instrument, it is basically not all black when used outdoors.For a generation of night vision instruments, I said earlier, even darker, even if it was all dark.

2 The night vision instrument observes far and near the situation when the infrared is turned on and does not turn on the infrared.

At present, the night vision on the market, each model is different from the far exterior of the infrared and does not turn on the infrared.

What to think of the Telescope multiples

The multiples of the Telescope are the previous number, and the latter number is a plympite diameter.These two numbers have no specific effect, which is two separate parameters.

For example:20X22 Represents the multiplier 20 Be more, the aperture diameter is 22mm Essence

The larger the Telescope multiples, the better, the better

The multiple of the Telescope is theoretically inversely proportional to the visual field of the Telescope. The higher the multiple, the smaller the view.Therefore, the multiples of the Telescope are not too large.50mm The diameter binocular Telescope, if it is here 20 The double is basically the limit. If the multiple is large, the field of vision is too small.It is basically impossible.

Common multiplayer of the Telescope

Common7 Double 8 Double 10 Times. 12 The higher or even higher Telescope does not have technical difficulty, but if you do not need a tripod, you will be able to see anything.

Maximum multiples of the Telescope

1 There is a standard multiple range of holding Telescope, that is, 7 ~ 10 Between times, the range of this multiple is obtained through long -term practice.

Because the higher the multiple, the better, while increasing the multiples, it will also cause problems such as narrow vision and jitter.

2 , "The highest", in fact, the highest ones are 20 Double, 16 Double, 12 More, but there are no such products. What are such products?They are all deformed and low -end, rely on multiple to seduce products of consumers who are not familiar with Telescope.

Shipped Telescope purchase suggestion

Watching the scenery, double Tube6 ~ 8 The best, the eyepiece 32 ~ 42 Between the backblasses.

In the case of stargazing, double Tube8 ~ 12 The best, the eyepiece mirror 42 ~ 50 Between the backblasses.

Paul mirror is not recommended, because the same caliber, the gyrolasses are much lighter than Paul mirror, which is more suitable for handheld and shake.

Not recommend50 The above is also considering the weight, 50 Even if the above ridge is needed 1kg If you hold it, it will inevitably shake.

What to think of the Telescope parameter

The magnification of the Telescope: that is, the magnification (multiple) of the Telescope is a magnifying multiple through the Telescope observation target.It is equivalent to observing objects at 100 meters with the naked eye. Its value is equal to the ratio of the focal length of the object mirror to the focal length of the eyed mirror.

The caliber of the Telescope:Here refers to the diameter of the objective mirror. It is usually expressed by mm. For example, 7X50, then it means that the diameter of this Telescope is 50mm.

The focus method of Telescope:In general, there are two types, one is the intermediate focus, that is, by rotating the focus wheels in the middle of the mirror body, the appearance of the two eyepiece is gradually clear.There will be a separate coke wheel on the right eye mirror of some Telescopes. This is because the eyes of the two eyes may not be the same vision, so you can adjust the right eye alone.The coke wheel, open the right eye after the left eye is clear, and then open the right eye. After the right eye mirror is adjusted to adjust the right eye mirror alone, the eyes are clearly debugged, and the intermediate focus wheel can be adjusted uniformly.

The other is to focus separately, that is, close the right eye to debug the eye mirror of the left eye alone. After the debugging is clear, close the left eye to adjust the right eye mirror alone. After debugging the clear debugging, you can enjoy the beautiful scenery.

Prism system:Now the mainstream Telescope prism system uses two basic designs: ROOF prism or Porro (also translated Porro, Poparo, Baoluo) prism.

The roof spine prism system is that the optical structure is relatively light and compact, and it is more suitable for outdoor sports portable products; the disadvantage is that the light losses are more and the imaging is relatively darker (but with the development of coating technology, the imaging effect of the Telescope of the roof structure is greatly great.Improvement), high requirements for assembly accuracy, difficulty in manufacturing, and expensive prices.At the same time, the appearance is much more complicated than the Paul prism, and it is difficult to process. In addition, it is difficult to be more difficult to assemble and maintainability, so the cost is high.

Paul prism is also called right -angled prisms. It is a traditional classic design. The more common design is composed of two exactly the same right -angle prism. The advantages are simple shapes, light transmission and brightness will have good effects, easy to process and assemble, disadvantages, disadvantagesIt is relative to the roof prism, with a large weight and volume.

Prism material:In terms of prism materials, in the current sales market, the internationally commonly adopts the brand sign of the German Shawt Company. The two common materials used in Telescope prisms are BK-7 (Shawot Company, and my country's factory approximate material brand number For K9) or BAK-4 (Schart Corporation, the similar material brand of my country's factory is K7).

BK-7 or BK-4 are both economic and efficient design that have been tested in history. In comparison, BAK-4 glass has a high refractive index, eliminating the internal light scattering loss.Essence

Nearly focal distance:That is, the distance between the observed object can be seen. For example, the near focal distance is 3 meters. Then the object is blurred within 3 meters, and the focus can be seen clearly by focusing 3 meters away.

Pupil diameter:After the light is converged by the eyepiece, the diameter formed by the spots formed after the eyepiece.For the optical equipment used by the naked eye, the light must be used to enter the retina imaging after the pupils. Human pupils are about 3mm during the day and the maximum of about 7mm at night.When observing it with optical equipment, the bright spots formed by the lighting of the eyepiece will be projected on the pupil. Therefore, the larger the diameter of the pupil, the greater the brightness of the imaging.

The calculation formula of the diameter of the pupil is: p = d / m where P represents the diameter of the pupil, D represents the diameter of the object, and M represents the magnifying multiple.

Pupil distance:It refers to the distance between the last lens of the eyes and the eyepiece when it can be seen clearly.Many binocular Telescopes are designed to grow out of the pupil Telescope, mainly because it is comfortable to use, and the viewing of the scenery is brighter, especially users wearing glasses, can not take off their glasses, and some ordinary pupil Telescopes.It is difficult to use.

Telescope Vision:Highlight the sky range that can be seen in the remote mirror or twin Tube Telescope.The field represents the maximum range that can be observed through the Telescope. Usually, it is expressed from an angle. The larger the viewing field, the larger the observation.The field of view is generally represented by the vision (observable width) and an angle of view. There are three common methods: one is to directly use angle, such as Angle of view: 9 ; the other is a thousand thousands;The visual range of the rice, such as Field of View: 158m/1000m; the third is the thousands of feet used by some countries abroad, which is actually similar to the second, such as Field of VIES: 288FT/1000Y.

Relatively brightness:The relative brightness is calculated based on the formulas such as multiple, caliber, etc. The current simple calculation method is the Square of the diameter of the pupil.

Far mirror resolution:The actual resolution of the Telescope generally does not exceed 20 ", mostly within 10", and the resolution of the naked eye is 60 ". Therefore, the naked eye that can be seen through the Telescope cannot see clear objects.

Telescope coating:Optical coating: This is the lowest -level coating. The price is cheaper. Generally, it is a mirror -surface shelter film, generally plating mirror.

Full coating: All lenses are plated with single -layer membranes.This will increase the pass rate of light from 50 % to 80 %.

Multi -layer coating: At least one film is plated more than one layer of membrane.

Full mirror multi -layer coating: This is the most advanced coating.It indicates that all mirrors are made of multi -layer coating, which can increase the pass rate of light to 90-95 %.

Wangyuan mirror eye mask:Divided into rotation and folding.