Astronomical novice is choosing a telescope?Or is it a binocular telescope?this is a problem

How much is the mystery of the universe? Buy a telescope and let your eyes tell you in person!

Telescope purchase guide

As the vacation season is approaching, many people consider buying telescopes. Maybe you have seen advertisements for telescope in newspapers, directory or TV shopping channels. There is a type of advertisement that may be said:

"The mystery of the universe is close at hand, bringing you a close -up experience of observing the mysteries of the universe. Use this practical learning tool to study the sun, the moon, the planet, the star, the comet, etc.!"

This statement is very tempting for the novices of astronomical, goodwill or grandparents. They want to provide a tool for cultivating children's future space consciousness. With this tool, children can "discover the miracles of heaven."

However, it is a pity that most of the telescope sold in the mall looks very cost -effective, and they often end with thorough failure. Important precautions:

gain

Generally, merchants often vowed to promise that its telescope has an unusual magnification, but it should be noted that almost any telescope can provide you with a 500 magnification. In most cases, the magnification mentioned in the advertisement far exceeds the actual maximum value of the telescope. The result is often a large and blurred image.

For example, a 2.4 -inch refraction telescope never exceeds 120 magnification (the empirical law is 50 times per inch aperture). In fact, the most valuable view may use half of the actual magnification (60 times).

Illustration: Carson JC-1000 2.4 inches 60 mm refracted telescope kit. Casen JC-1000 telescope is a simple beginner telescope designed for astronomical use. The focal length is 800mm. Using a short-focal eyed mirror can increase the magnification, and the telescope will not be too long. Picture source: Bhphotovideo.

Illustration: Saxon 102/500 AZ3 Pioneer refracted telescope. This short tube telescope is equipped with a 102mm multi -coated color disappear mirror with a focal length of 500mm. Give away a series of accessories: a Prover mirror, a red dot mirror, and a upright prism for the ground viewing. The oscilloscope is equipped with a latituder stand. The entire component is only 6 kg. Picture source: saxon.

stability

Another common problem is the installation of telescope. For most ready -made instruments, it is often light and unstable. Install the bracket on a shaking tripod in turn. A telescope can have the best optical components in the world, but if the base is too poor, it cannot be fixed in the appropriate position, it is useless.

Illustration: Star Trun Heavy Manual Morneity Triploid Trilet is very suitable for providing a stable observation platform for small and medium -sized telescopes, sights or large astronomical twin tube telescopes. This manual latituder bracket has a full 360 ° rotation, a standard 1/4 "-20 device installation bolt, and a dual-slow action cable with a large knob to find and track the ground or celestial objects. By the 45 -second adjustable height, and an attachment tray, it is also used to fix the legs in place to obtain greater stability. Source: Bhphotovideo.

Of course, people who are unfamiliar with the telescope (often refer to children with space thinking) want to drive the telescope at the highest magnification multiple. As a result, a magnificent vague image will be obtained, and because of its design defects and instability, this image will not be maintained in the visual field of the telescope.

Before you realize these, this "practical learning tool" has been placed in the cabinet or attic, and it can no longer see it!

If you still want to buy a telescope enthusiastically, there are some product tips below:

Go to your local bookstore or newspaper and browse various astronomical magazines, and the famous manufacturers will advertise for astronomical telescope. Many astronomical museums across the country offer "how to use telescope" courses. It usually helps potential buyers and those who want to make full use of existing tools.

Contact the local astronomical society to participate in a star party or other activities. In such activities, you can see a variety of telescope and talk to experienced people. This gathering is the ideal display room of commercial telescope and homemade telescope.

Try this.

I have a suggestion that many potential telescope buyers, especially those astronomy novices, don't expect to hear the merchant say: Before using the telescope, first consider the advantages of the twin bonus telescope.

Some people think that the binocular telescope is a bit like a degraded version of the telescope, but in fact, for some aspects of the sky, the dual -tube telescope is the best instrument.

Illustration: Nikon's 8X42 Monator M5 dual -tube telescope improves Monator 5 design, provides a wider field of vision, provides a more immersive observation experience, while maintaining the comfort and performance of the Monator series. Ultra -low -color dispersion glass, anti -reflective multi -layer coating and media coating, phase correction roof prisms provide bright and highly contrast images, with realistic colors and minimum colored edges. Picture source: Bhphotovideo.

Both vision provides our central image processing system (brain) to confirm the function of two eyes. In fact, we have increased the signal -to -noise ratio through two eyes. The brain filter out the random pulse signal of each eye, let us see the real object. As a result, the enhancement contrast (about 40%) and the ability to see the dark object. A good binocular telescope is excellent for beginners. As for which type of telescope to choose, it seems like asking, "What kind of dogs should I buy?" Everyone has his own preference.

Double tube telescope prompt

The most suitable for watching stars is the 7 × 50 "night vision". Although my personally favorite is the 7 × 35 binocular telescope, it can provide a wider field of vision. The first number represents the amplification multiple of the binocular telescope (7 times), and the diameter of the second digital mirror (35 or 50 mm).

Illustration: AOMEKIE Adult Ocean Double Tube Telescope, micr -light night vision, 7 × 50 military waterproof fog fog mixer bak4 prism lens, used to navigation rowing fishing fishing water sports hunting. Picture source: Amazon.

Find a reputable store, where there is a series of good binocular telescopes, and find a proficient shopping guide. He can tell you the advantages and disadvantages of all models. Persist in allowing you to browse 5 or 6 sets in a certain price range. This largely depends on your feelings: the hands and eyes have comfort, and the binocular telescope with controlling devices in the correct position seems to be able to provide a good balance between economic and performance.

The two -tube telescope is easy to use and cheap, which helps us understand the constellation and familiarize the many charming deep space celestial bodies.

When you hold them steadily (you can also put them on a tripod), they will let you see the lunar meteor pit, Venus's half -moon body and Jupiter's satellites. If a bright comet appears, there is no better device than a twin tube telescope for the overall view of the head and tail of the comet. In the Milky Way, you will see countless stars. Because the binocular telescope does not provide upside -down views (most of the telescope is the same), the binocular telescope is particularly convenient when comparing the star chart and the star itself.

Because the dual -tube telescope requires the minimum installation and disassembly time, the cold winter night will not stop you from enjoying even a short outdoor activity.

In the end, it is not the most unimportant point that the practical experience provided by the dual -tube telescope will allow any beginner to get more satisfaction when the first telescope is preparing to buy the first telescope.

By: Joe Rao

Fy: Wu Wei

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