Best Telescopes. Comparison

▷ The best telescopes. Comparison

Telescope – Reviews, Analysis and Buying Guide

Whether you are a novice amateur or professional astronomers, our guide will help you find your way in buying a good telescope for your needs and, possibly, economically. The guide also contains a review of the most popular telescopes by buyers, including those currently available on the market. According to reports, in fact, they are the ones that stand out for the best value for money. The most popular are especially the telescope ESSLNB 883 835, from the affordable cost and also suitable for amateur astronomers novice, and the SV20 Svbony, belonging to the same band but characterized by slightly higher performance.

The 8 Best Telescopes – Ranking 2020

astronomical Telescope

1. ESSLNB Astronomical Telescope with Adjustable Tripod

▷ The Best Telescopes. Comparison

The astronomical telescope produced by the British company ESSLNB, is one of the best-selling models thanks to its unique characteristics. It is in fact a cheap telescope but, unlike the other models available at low prices, is distinguished by a range of accessories of all respect and for good performance offers and for its versatility; in fact so is ideal for astronomical observation as for bird watching and nature observation.

It is thanks to these features and the competitive price that buyers consider it one of the best telescopes of 2020; according to their opinions, in fact, it is a nice tool, better equipped than comparable models from other firms, lightweight and extremely functional. Among the various accessories supplied it is also a special filter to improve the observation of the moon, an adapter for the smartphone, a Barlow lens 3x and a small map of the constellations.

Versatile: With this telescope you can have fun not only to observe the moon and the stars, but you can also use it for bird watching and nature observation.

Ben equipped: The range of accessories includes a 3x Barlow lens, an adapter for the C-type smartphone, a filter to improve the observation of the moon during the brighter phases, a mirror at 45 °, an optical viewfinder, two eyepieces Kellner , a tripod and a map of the constellations.

Price: One of the reasons for his great success with the buyers, of course, is that it is available at an easily affordable for anyone.

For newbies: The performance of the telescope are good, but it is still an economic model so do not expect miracles. It is recommended especially for beginners.

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refractor telescope

2. Svbony SV25 Telescope Children Adults 420 / 60mm

▷ The Best Telescopes. Comparison

The refracting telescope Svbony SV20, instead, is slightly higher than the model discussed above, in fact mounts an optic with a diameter of 80 mm with a focal length of 400 millimeters, against 70-360 mm optical possessed by ESSLNB telescope.

It is equipped with adjustable photographic type aluminum tripod, durable, yet lightweight, two 1.25-inch interchangeable eyepieces Kellner, one 9 mm and one 20 mm in diameter, a 3x Barlow lens, one zenith mirror angled at 90 °, a viewfinder 5 × 20, an adapter for the smartphone, a map of the constellations and the instruction manual.

As the ESSLNB previously examined, also the Svbony SV20 is a versatile telescope, also useful for the observation of nature, for birdwatching and for sporting events; slightly higher performance comes at a higher cost, however, also it has a flaw with regard to the instructions, which are present only in Chinese and English.

Optics: The optics are of good quality and also higher than the telescope ESSLNB: the lens diameter is 80 millimeters, in fact, and the focal length of 400 millimeters.

Accessories Kit: Even Svbony telescope has a large range of accessories, similar to that possessed dall’ESSLNB; the only exception is the filter for the lunar observations, of which the SV20 is devoid.

Versatile: If subjected to comparison with the model discussed above, even the SV20 is characterized by a wide versatility of use, from astronomical observations up to those naturalistic, birdwatching, concerts and sporting events.

Instructions: Unfortunately, the instruction manual is written only in Chinese and English, so installation and setup for different uses are complicated to execute.

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3. Celestron 822025 Telescopio 130EQ

▷ The Best Telescopes. Comparison

Even the Celestron 130 EQ is a reflector telescope short tube Newtonian, but is characterized by a qualitative level which is considerably higher than both models examined previously. The American company, after all, is well known for high production standards of its telescopes, very popular especially in business.

The telescope Celestron 130EQ, in fact, has a Star-Pointer seeker integrated optics of 130 millimeters in diameter with a focal length of 650 millimeters, thanks to which you can clearly distinguish the cloud bands of Jupiter and even the rings of Saturn.

Even the materials are of excellent quality, the tripod is made of steel instead of aluminum, is also equipped with an equatorial mount CG-3 to the German, prepared for the motorization of an axis. The kit of accessories includes a 20 mm eyepiece with magnification factor 33x and one 10 mm with 65x factor.

High quality Celestron: The brand is one of the most famous in the production of telescopes. This American company, in fact, is particularly appreciated for the high quality and reliability of its observation instruments.

Excellent materials: The quality level as can be seen from the materials of manufacture; the tripod is made of solid steel and is also equipped with an equatorial mount arranged to be driven about an axis.

Excellent Optical: 130 mm in diameter and a focal length of 650 millimeters, with these assumptions can safely push to Jupiter and Saturn, although not physically.

Heavy: It’s solid and sturdy but heavy, so moving it will require attention and even a little ‘fatigue; also the performance, as superiors, are, however, entry level type.

Buy on (€ 243.17)

professional Telescope

4. Celestron Telescope CPC Deluxe HD 1100 Electronic

▷ The Best Telescopes. Comparison

If you are looking where to buy a new professional telescope, buyers

advise the CPC Deluxe HD 1100, also produced by the firm Celestron, of course, and therefore qualitatively superior in all respects.

Among the various professional models sold online, the Celestron HD 1100 is one of the most expensive, but in the opinion of the experts is also the best telescope between the different available in the highest bracket. It has a focal length of 2,800 mm with ratio f / 10 is equipped with servo motors and NexStar computer with integrated GPS and alignment system for the stellar coordinates, including a database containing those of more than 40,000 objects including stars, nebulae, planets, comets and satellites.

The CPC Deluxe HD 1100 has only one flaw: the high price, but it is the best the market can offer; no coincidence, in fact, is the same used by the late Stephen Hawking for the observation of the stars.

Professional: To a trained astronomer can be no better instrument of CPC Deluxe HD 1100, a high-quality professional telescope, featuring a view nothing short of superb.

Motorized and computerized: It can be controlled either manually or through the integrated servo motors; the latter respond directly to the computer which transmits the signals for the movement according to the astronomical coordinates of the object to be observed.

The preferred by Stephen Hawking: The brilliant scientist owned a Celestron CDC Deluxe HD 1100, he used regularly to his personal astronomical observations.

Price: The cost has to be considered on par telescope, namely “astronomical”, but ultimately it is a tool of the range at the top specifically designed for professionals.

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reflector telescope

5. Seben’s Star-Sheriff 1000-114 Reflector Telescope with EQ3 “Big Pack”

▷ The Best Telescopes. Comparison

With the reflecting telescope EQ3 Star Sheriff 1000-114, manufactured by Seben, back in end products intended for amateur, as amply testified also affordable.

Unlike other amateur models with which we put in comparison, the Seben telescope has the advantage of possessing a view of all respect: with a mirror from 114 mm in diameter that refers to a focal length of 1,000 millimeters. Furthermore, it is prearranged for the assembly of different and additional accessories, such as servomotors for the movement and the adapter for SLR cameras, particularly useful for those who practice astrophotography.

It also has a wide range of accessories which includes four high-performance eyepieces of different sizes, with its protective case, a reverse lens, a Barlow and more. The only flaw is totally insufficient instructions, which dissuaded from buying their own beginners that is targeted.

Optics: Except for the Celestron telescopes, of course, between different amateur models examined in our guide, the Seben is characterized better optics, with a focal length that reaches 1,000 millimeters.

Big-Pack: The Seben is has a range of accessories consists of fifteen different elements, including high-performance four eyepieces of different sizes, each complete with protective case.

Prepared for additional accessories: Not only is designed for installing actuators, but it is also full of adapter for SLR cameras.

User Manual: Instructions are inadequate and too imprecise, and have caused many beginners to return after purchase; so it is recommended to those who have at least the basic knowledge to assemble it and make it work properly.

Buy on (€ 194,99)

Children Telescope

6. OUTERDO Astronomical Telescope, Zoom HD Monocular

The OUTERDO was appreciated especially for its low price, it is the cheapest among all those examined in our guide. It could not be otherwise, moreover, since it is a telescope for children.

Being a low-cost model is made with synthetic materials, even if the ABS Premium of the main body has a good resistance. The tripod is made of aluminum, however, and unlike the first models examined, is not adjustable in height. The range of accessories, however, is provided according to the standards of this price range, then it includes the two eyepieces, the filter for lunar observations, the viewfinder and the zenith mirror.

The buyers consider it a good telescope but on condition that you take it for what it is: an educational toy is intended primarily for children ages 6 and up, totally inadequate for the needs of an amateur astronomer.

Economic: The price is how much lower can hope to find, but it is perfectly in line with the performance offered by the telescope, which is designed for children aged six years and older.

Standard accessories: Unlike other toy models, the OUTERDO is a telescope in effect and therefore equipped with the standard accessories: Aluminum tripod and two interchangeable eyepieces with magnification 18x and 60x

Light: Thanks to the main body made of ABS acrylic premium quality, the telescope OUTERDO is strong and also very light, easy to handle for a child.

Toy: Of course it’s a toy telescope; If desirable to really satisfactory astronomical observations, you will have to spend quite a different figure.

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newtonian telescope

7. Celestron NexStar 130 SLT Telescope, Steel, Tube Optical Newton

Once again, the Celestron company proves to be a favorite brand buyers, this time with the Newtonian telescope NexStar 130SLT that, as the more experienced will easily guessed from its name, belongs to the series of computerized telescopes company.

130EQ As discussed above, even the 130SLT is an entry-level telescope, but even if it is based on the same 130mm-650mm optics, is placed in a category above; it integrates the Star Pointer-seeker, servo motors with adjustable nine different speed of rotation and the computer NexStar complete TheSky, with a database of over 4,000 objects.

As you can guess from the specifications, however, the price is up to the none the less offered, accessible even for amateur astronomers, especially for the most demanding who prefer to invest a little more to get a higher-quality yield. The only flaw is the range of accessories, reduced to only two eyepieces.

Top quality: This time it is not only the brand, but also the type of telescope; the NexStar 130SLT fact, despite being an entry level model, is equipped with servo motors and computers.

Software TheSky: The renowned Celestron viewing software, even in its basic version, it comes with a respectable database: more than 4,000 objects including planets, nebulae, stars and comets.

Motorized: Framing the desired celestial bodies is a breeze, thanks to the computer that controls the servo motors directly; of course you can use it manually.

Shortly equipped: The included accessories is nothing short of basic and only has two eyepieces, Barlow also be purchased separately so if you do not already own.

Buy on (€ 629.99)

Computerized Telescope

8. Celestron NexStar 6SE Telescopio

The choice of a good catadioptric telescope, also passes from a reliable construction and a practical and versatile pointing system. In this context, the proposal Celestron manages to have his say, with a mechanical suitable for both enthusiasts and amateurs who want to start exploring the heavens.

To simplify your search, you enter a SkyAlign, great for those who place and proceed to the quick identification of a planet or a star thanks to simplified triangulation system. A side panel helps to manage the various parameters, with a view E-lux 25mm (60x) effective and bright.

Rounding out the list of qualities strong this item, we think the single arm Nexstar SE frame, resting on a tripod stable and comfortable for outdoor exits.

Reliability: The tracking system uses the SkyAlign technology, useful to find the right position of a star, with a magnificent combination of management also for those who have a thorough knowledge of the sky.

Transport: Despite having a strong structure, the model Celestron 6SE is a good companion of observation to take outside the home. The main body and the tripod area can be disassembled in a few minutes, adapting well even at low temperatures.

Design: The telescope is an effective mix of mechanical, optical and software. The Celestron experience in creating a solid object and with which to enjoy the views of stars and distant planets, marries technology with a robotic arm to good yield.

Software: The program contained on the CD does not present among the options the Italian language, an obstacle for those unfamiliar with the language too, and that limits partially the possibilities to benefit from these opportunities and digital resources.

Buy on (€ 1199)

9. Celestron NexStar 8SE Telescope Compact

The model Celestron NexStar 8SE, meets opportunity and a style that brings together both newbies, both celestial exploration enthusiasts. The features that characterize rely on a versatile mechanical and quality, with a view well protected from dust and temperature changes.

The long focal allows to scan the sky, benefiting from a luminous efficiency of objects brought into focus, but without affecting so heavy on the magnitude and the overall footprint. One aspect which then results in an excellent portability. The mechanized system, thanks to tracking SkyAlign, helps to make the right coordinates, managing tracking from three stars as a reference.

In addition, the hand control software can be upgraded easily and gives the user an additional resource with which to explore and adjust computer-movement and shots. The tripod pairs well during the observations, with a good success also in the process of filming and photographic shots.

Dimensions: With its 15 pounds of weight, the model NexStar 8SE realizes a union between substance and practicality. Easy to assemble, can accompany you also during outputs outside the home, with a tripod that is stable.

Practicality: The motorized stand is combined with Celestron optics goodness, in a mix that gives sharp images of celestial bodies is framed, both of landscapes and terrestrial fauna.

Price / quality: Designed for those who want to start making a quantum leap, the Celestron telescope has a set of tracking and observation functions that do not disappoint, with the addition of a solid line and proportionate to the cost required.

Buttons: emerge problems related to fixing and positioning of the controls. Fatigue panel a little to find the right place once removed from its seat.

Buy on (€ 1875)

Eyepieces for telescopes

If you are interested in expanding the range of accessories of your astronomical observation instrument, it is essential to start from the first to the telescope eyepiece.

Again the company Celestron offers the best products, in this case the eye belonging to Omni Series; the CE93316 has a focal length of 4 mm and is particularly suitable for the observations of bright objects and contrasted with a very high magnification factor.

The barrel diameter is 31.8 mm, and is threaded to allow mounting of the filters, also it is equipped also with rubber hood and protective caps.

Buy on (€ 36.53)

An ancient instrument of millennia

The star gazing is a practice that man does for thousands of years now, first with the naked eye and then with the help of rudimentary telescopes have become increasingly sophisticated over time and with the technological evolution. The passion for astronomy is one of the most beautiful and educational pastimes that there may be, but for a beginner it is hard to disentangle the coordinate calculations and maps of the constellations, so it is equally difficult to know which telescope to buy according to their needs, especially considering the price of these instruments.

The cheaper models start from 70-80 euro to rise, in fact, and all the copies sold at a lower figure are nothing more than mere toys, made of super telescopes with cheap materials that offer performance standards and are designed especially for children, to introduce them to the study of astronomy.

Understanding how to choose a good telescope, therefore, it becomes vital to avoid making a wrong purchase, regardless of the expense.

The refractor telescopes

First you have to decide which of these features give priority, if the sharpness and clarity of the images, or the bulk of the instrument, so as to identify the most suitable type, reflector or refractor.

The amateurs, for example, prefer the refractor telescopes for the first reason, namely for the high yield in terms of sharpness; the lenses, in fact, enhance the brightness and return and a clear image with good contrast, thus they are ideal observation of the Moon and the other planets. Their flaw, however, comes out when you point the telescope at a star, maybe a binary system, or to a nebula. In that case the exaltation of the brightness results in a net loss of contrast, and hence of sharpness; a binary star system, therefore, instead of being perceived distinctly will be seen as a single speckle of light from the oval shape.

The further problematic aspect of the refractors is given by the focal length of the lenses and the size, which increase more ranging heavily affect the overall dimensions of size, weight and on the purchase price. A refracting telescope with a 150 mm lens diameter can cost more than 600 euro, especially if it is motorized, while a model with lens 70 or 80 millimeters in diameter with manual pointing can oscillate from 80 to 150 euro approximately, depending on the brand and level of accessories.

The latter are not always included in the package, especially the medium-high end tend to be extremely spartan in this respect models, so as the case must take into account a possible additional spending to expand kit of filters and eyepieces, in so as to increase the range of possible observations.

The Newtonian telescopes

The reflector telescopes however, that from this moment we will call Newtonian to avoid confusing them with refractor telescopes, are characterized mainly by size and weight, because the system allows mirrors to reduce the size of the main body without sacrificing the focal length.

Newtonian telescopes are preferred by those who have little space available and those who like to make observations of the night sky from remote areas, and then look for a light and compact, easy to carry. The limitation of this type of telescopes is given by a considerable reduction of captured brightness, and are therefore less accurate observation of celestial bodies such as satellites and planets, but just for this reason, however, make it much better observation of the stars and nebulae, which can capture in all their variety of contrasts.

Also in this case the price varies depending on the size of the optics, the focal length and the presence or absence of additional accessories, such as servomotors for the movement and the computer with the database of the coordinates for the pointing. In this case the figure may vary from 200 € of the cheapest models up to 5,000 Euros and more than professional models, with a focus on range from 350 to 700 Euros approximately, where you can find excellent Newtonian telescopes also suitable for beginners, complete servo motors and computers.

Who invented the telescope?

The properties of lenses have been known since the earliest antiquity, when they were used primarily to concentrate the sun’s rays and light the fire. The ancient Assyrians had set up telescopes and very rudimentary telescopes already four millennia ago, to use them in observing the night sky, while the Roman Empire lenses were used primarily as optical correction tool, and magnification.

Subsequently, during the XIII century, the Franciscan friar Roger Bacon devoted himself largely to the study of discovering the lens refractive property and paving the way for the emergence of modern telescopes; the first of which was developed in the seventeenth century German naturalized Dutch optician Hans Lippershey.

Creating Lippershey was rough, though, as based on the same models of telescopes and telescopes archaic era, dating back to the Assyrians, hence its model was penalized by a coarse optical performance and a poor image resolution. It was at this point that Galileo interjected improving the instrument, obtaining credit for having perfected and, as a result, “created” the telescope as we know it today.

How is a telescope?

First we must make a difference between the optical and electronic telescopes, such as the telescope just as an example. Optical telescopes are popular of course, because they are used not only by astronomers but also by amateurs, enthusiasts and visitors, while electronic ones have high costs and are therefore intended mainly for research institutions and universities. Optical telescopes can in turn be of three different types: the refracting telescopes, reflecting telescopes, also called Newtonian, and the catadioptric telescopes.

All three types are united by the fact of possessing a cylindrical tube as the main body, to which the differences are relative only to the optics. The refractors for example, inside the tube possess a series of lenses that precisely exploit the phenomenon of refraction to postpone the enlarged image and inverted again in the right direction toward the eyepiece.

The reflector telescopes, however, are characterized by a shorter tube and wider than that of the refractors, inside which is placed a circular convex mirror which concentrates and sends the image directly to the eyepiece, without letting it pass through other lenses .

The catadioptric telescope is similar to the spotlight, but additionally has a correcting lens that improves the performance and sharpness.

How does a telescope

The operating principle of a telescope varies depending on its type. In optical telescopes, for example, the lenses are used for capture, focus and concentrate the light and then send it back to the eyepiece, or one capture tool images. The latter can be a camera or, in the electronic models, a CCD sensor or a spectrograph.

The totally electronic telescopes, however, have a principle of operation similar to that of optical telescopes only that the lenses are replaced by parabolas which serve to capture, focus and postpone the radio waves, X-rays or gamma rays, to the relative receiver depending on the type of telescope; then radio antenna, the spectrograph and sensors for radiation X and Y.

In optical telescopes, there is a further differentiation, but the principle of operation of the base remains the same. We have already mentioned that the refractors using different lenses in order to exploit precisely the effect of refraction in order to restore an image that is not only enlarged and focus, but is also visible in the right direction and not upside down.

The reflector telescopes, however, are devoid of lenses and on the bottom of the cylindrical body, usually wider and shorter than that of the refractors, possess a circular convex mirror. The latter reflects the portion of the sky towards which is directed, by concentrating on a second zenith mirror that refer directly to the eyepiece.

There are also optical models with mixed schemes, ie endowed both of mirror both of corrective elements, lenses or slabs, such as for example catadioptric telescopes; the advantage of combining both optical systems is that it can greatly reduce the size of the telescope without going to affect the focal length of the instrument.

How to point a telescope

Also pointing a telescope depends on the type of instrument and the presence or absence of electronic components. The telescopes must be manually focused with the help of the viewfinder, the latter can be mounted separately from the eyepiece or integrated with the same, but in any case is placed parallel to the main body of the telescope. In this way it facilitates the pointing object in view, it is the Moon or another planet.

Taking into account the Earth’s rotation, therefore, bulleted items will be in constant motion with respect to the observation point, which therefore must be continually compensated with small and continuous manual corrections.

Some telescopes, however, are equipped with a microcomputer and servo motors, so they can carry out both the pointing and all subsequent corrections in a simple manner, inputting directly into the computer coordinates of the object to be observed.