How to choose a telescope: tips and reviews

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2019-09-21 22:20:27

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The Flight of a bird, the scarlet sunset, a full moon or a distant star is able to permanently attract the gaze, much to the delight and awe. The world around us is filled at once wonder and mystery, if you pay attention to them. Unfortunately, modern life often becomes monotonous in the race for material goods and far goals, it is time to stop, look around, to notice and appreciate the beauty of life. Adults, absorbed in many cares, forget how to look at the sky, although as a child, dreaming, they were in it for hours.

Man with a telescope

But there is a simple method at least temporarily to escape from the trap routine. Buy telescope/spotting scope, which arms of the human eye better to see the world, focus on the countless and varied its details. You can even make a telescope with your own hands, but still to enjoy all the features of this optical device, it is better to buy it in the store.

A Little history

Astronomers and dreamers have always wanted to see the vault of heaven closer look, however, for the first time this has been possible only in the XIII century. In 1268, the Englishman Roger bacon after a series of experiments with mirrors and lenses created the prototype of all modern telescopes. His invention was not developed as the technology of manufacturing of optics was still too low.

Almost two and a half centuries later, in 1509, the genius of Da Vinci designed and drew details the telescope is equipped with two lenses, described its principle and designed the advanced for its time machine for high quality grinding of the lens, but humanity was not yet ready to make that invention.

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For a real breakthrough took a century. In 1608, the great Galileo designed and created with your own hands a telescope with a thirtyfold increase, although optical devices were increased to a maximum of three times. A similar leap in capabilities allowed the scientist to make a series of dizzying discoveries: sunspots and rotation, satellites of Jupiter, phases of Venus, craters of the moon, individual stars of the milky Way. Galileo first began to mass-produce the telescope, they were short-lived due to a paper case, but still quickly began to spread across Europe, with a special hunting bought them sailors.

Galileo Galilei

In 1611, written by the astronomer Kepler, the book “Dioptrice” was shown a telescope, which was called “Keplerova system” and markedly superior optical capabilities of the invention of Galileo. Pipe but Kepler had one obvious drawback: it turned the image 180 degrees. For astronomers this flaw did not play much importance, but for travelers and explorers it became critical.

Johannes Kepler

To flip the picture back, you were required to install another lens that made the telescope big and too bulky. This problem was completely solved in 1850 by Italian Ignazio Porro. He invented a special system of mirrored prisms that inverted the image without the use of additional lenses.

Types of telescopes

The Union During the range of optical devices was very poor. Perhaps the most popular was the telescope Turist 1, 2, 3 and so on, which was released Lektorsky a plant located in the Moscow region. Today, Russian consumers can choose among hundreds of models of spotting scopes from dozens of foreign and domestic manufacturers.

However, a large selection sometimes causes difficulties. The buyer is confused in the abundance of models, characteristics, and incomprehensible terms. To little to navigate the vast range, you need to understand what type of telescope there are. They can be classified according to several characteristics.

Optical system:

  • Mirror-lens system. It is responsible for the image of the combined system of mirrors and lenses. Pros: the image quality is better, brighter, less distortion. Cons: high price, fragility of the mirrors.
  • Lens system. It has only lenses. Pros: cheapness, durability. Cons: worse image.

The presence of Zuma.

  • Increases constantly.
  • Magnification can be adjusted.

According to the location of eyepiece:

  • Eyepiece and the lens lie on the same axis.
  • Ocular axis at an angle to the lens axis.

Material body:

  • Metal. Durable, but heavy.
  • Plastic. Lighter, but more fragile.
  • Rubberized materials. Convenient to use.

According to the diameter of the eyepiece and multiplicity. These two key characteristics, first of all, indicate in the marking of the telescope. The diameter located at the entrance of tube lens determines its light gathering ability, and therefore – the clarity, brightness, color rendition and image detail.

The Multiplicity telescopes usually ranges from 15 to 100 times. But 15 times – a rather weak increase, which is what little children for fun. And optical devices with the hundredfold increase very expensive and massive, at home or traveling to be inappropriate, theirit is advisable to use for serious research. The optimal multiplicity of the considered values in the range of 30-60 times.

Some of the telescope are connected to modern digital cameras, it allows not only to observe but also to photograph all caught in the lens. Such optical devices are expensive, but for lovers of photography costs are fully recovered with pleasure, which gives the opportunity to capture increased world.

Telescope and a camera

Accessories

Buying a telescope, you should not forget about the selection of necessary and useful accessories, which include:

  • Convenient carrying case and bag. Telescope – a rather fragile devices, so they need to be protected from shocks, dust, water. Reliable box and special sturdy suitcase for travel will prolong tube life. Shoulder bag is convenient when exploring the city or the forest, the device is relatively safe, it can quickly get.
  • The Tripod. It allows you to comfortably carry out observation without fatigue of hands and shake of the picture.
  • Adapters for connecting to an external digital device.
  • Tools for lens cleaning.
  • Light filters for observing too-bright objects.
the Telescope in the mountains

Buying Tips

There are a number of tricks to help choose the store good the telescope and to avoid very high-quality products.

  • Some manufacturers, especially those sin unpronounceable Chinese labels, write on their optical devices, very large values of multiplicity at fairly modest diameter of the eyepiece. It's either outright deception or such a pipe will be too small for the normal observation, the diameter of the exit pupil of the eyepiece.
  • When buying must examine the body of the instrument. There should not be cracks and gaps. The spotting scope is completely sealed, caught in the air or moisture leads to condensation on the lenses and distort the images.
  • Quality optics can be estimated by the appearance of the lenses. Serious manufacturers have applied to the lenses antireflection layer, which removes the glare coming from the bright objects. If this layer is, lenses are colorful, and the reflection in them becomes fuzzy, blurred.

Selection Criteria

To choose a good spotting scope and then do not regret about the choice, not just well-versed in the specifications or have enough money. The choice you need to comply with the relevance and reasonableness. This will help three questions:

  1. Who is spotting?
  2. What is it For?
  3. Under what conditions will it be used?

Hunting, travel, entertainment

  1. Designed for hunters, travellers and enthusiasts to explore the world.
  2. To Observe the animals and birds located far ground objects, with the players or singers in stadiums and concerts.
  3. Pipe, most likely, have to wear. Tough: dust, water, dirt, blows.
spyglass of the hunt

Conclusion. For these purposes it will fit a telescope with an increase from 30 to 60 times in rugged, but light enough so she doesn't have to involve camping or hunting.

Child

  1. For kids and Teens who are eager to know the world or want to learn how to make a telescope.
  2. Look at all around.
  3. Children Usually do not particularly care about things, so you need to be prepared that the child will drop the pipe, throw it in a pile of other toys, to forget in the rain or use as a hammer.
Child with a telescope

Conclusion. It is better to buy an inexpensive spotting scope in a rugged housing with a low multiplicity. You can buy a kit and assemble the pipe with the child. This will help him to understand the structure and working principle magnifying device. And in fact, many children first knowledge about optical laws get by reading the story of Dragoon “Telescope”, in which the pipe is assembled from fragments of mirrors, magnets, buttons and nails.

Original gift

  1. For the person who appreciates the rare, beautiful things.
  2. Maybe the device will rarely be used, it will decorate.
  3. Gentle conditions.

Conclusion. The multiplicity, strength of the body, the diameter of the lens – performance is secondary. In such a tube the main thing – its appearance and beauty of the case. There are many spotting scopes with original design. Alternatively, try to find becoming rare Soviet products. For example, a telescopic spyglass "Tourist 3" will be a great gift for the connoisseur of vintage things.

Telescope Tourist 3

Photographer

  1. For the professional photographer.
  2. For high-quality photography of various objects.
  3. Usually, experts are sensitive to their tools, so it is unlikely the telescope will fall or get caught in the rain.

Conclusion. Need spotting scope with excellentoptics, non-distortion, reliable tripod, with mandatory able to connect to the camera. Ratio device and the diameter of the eyepiece depends on the expertise of the photographer.


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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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