Spherical aberration is an optical phenomenon where light rays passing through a lens or curved mirror fail to converge at a single focal point. Light rays striking different parts of a lens are refracted at varying angles, causing them to focus at multiple points along the optical axis. Spherical aberration results in distorted or blurry…
The Zhumell Z8 Dobsonian telescope features an 8” parabolic primary mirror that captures a substantial amount of light and produces crisp, bright images free of visual defects like spherical aberration. You’ll also get two fully multi-coated eyepieces: a 2” 30mm eyepiece for wide field views and a 1.25” 9mm eyepiece for higher magnification. With the…
The Zhumell 76mm AZ Reflector is one of the most affordable reflectors on the market. It comes in well under a hundred dollars, but the quality is up there with other higher-end telescopes. This is not a terrible drug store quality telescope, this is a scope built by people who know how to make some…
Chromatic aberration is not a significant problem for reflecting telescopes, which use mirrors to form an image. Reflecting telescopes use mirrors to collect and focus light, relying on reflection rather than refraction. This makes them free from chromatic aberration, which is the most serious aberration that affects any optical telescope. Mirrors are simpler than lenses…
Mars is a fourth planet from the sun. Mars is visible through a telescope, making it an attractive target for amateur astronomers. Even a small telescope with a diameter of 60 mm (2.4 inches) can provide a view of Mars, including its reddish hue, polar ice caps, and darker regions. The best time to view…
Venus is the second planet from the Sun. Viewing Venus through a telescope is a popular activity for amateur astronomers due to its brightness and proximity to Earth. You can observe Venus’s crescent shape as it moves away from the Sun with a small telescope. Higher magnification can help reduce Venus’s bright glare, although surface…
The largest member of its family, the Zhumell Portable 70mm AZ Refractor is the ideal grab-and-go telescope for taking with you everywhere you go, especially for camping vacations, treks, and backyard gatherings. Its small body easily fits within the provided nylon duffle bag, and you can be prepared to observe in just a few seconds….
The smallest in its family, the Zhumell Portable 50mm AZ Refractor is the ideal grab-and-go telescope for taking with you everywhere you go, especially for camping vacations, treks, and backyard gatherings. Its small body easily fits within the provided nylon duffle bag, and you can be prepared to observe in just a few seconds. You…
Viewing Mercury with a telescope is possible but challenging due to its proximity to the Sun. The Sun’s glare often obscures Mercury. Mercury can be seen during its greatest elongations, when it appears farthest from the Sun’s glare. Telescope with at least 60 mm (2.4 inches) in aperture is recommended to see Mercury. Observers will…
Zhumell’s 60mm Refractor Telescope can gather enough light to see Jupiter, Saturn, the Orion Nebula, lunar craters, and more. Additionally, you’ll always be prepared to observe passing comets and other astronomical occurrences like the “Blood Moon” with the Zhumell 60mm AZ Refractor Telescope. It is always easy to get started with the Zhumell 60mm AZ….
It is not possible to see the American flag on the Moon with a telescope, even with the most powerful telescopes like the Hubble Space Telescope. Telescopes lack the necessary angular resolution to distinguish an object as small as the flag or a landing site on the Moon’s surface. The largest optical telescopes in the…
This article covers a brief description of telescopes of 2-16 inches available on the market. Whether you want to buy a telescope for your kids or for astrophotography or just to view planets and galaxies, this article may guide you to the best option you are looking for. You will also be able to compare…
What is a 16-inch telescope? A 16-inch telescope, also known as a 16-inch reflector or Ritchey-Chrétien telescope, is a large optical instrument designed for astronomical observations in the visible and near-infrared regions of the electromagnetic spectrum. The primary purpose of a 16-inch telescope is to collect light, allowing for the observation of faint and distant…
What is a 15-inch telescope? A 15-inch telescope is a large optical instrument with an aperture of 381 mm (15 inches), allowing it to gather a significant amount of light for enhanced resolution and magnification capabilities. The focal length of a 15-inch telescope typically ranges from 1500 to 2000 mm, with an example like the…
What is a 14-inch telescope? A 14-inch telescope is a powerful optical instrument designed for observing celestial objects in the night sky. It features a significant aperture that determines its light-gathering power and resolution, enabling astronomers to capture clear and detailed images of stars, planets, galaxies, and deep space objects. The telescope’s focal length is…
What is a 12-inch telescope? A 12-inch telescope is a powerful optical instrument designed for amateur astronomers to observe deep-sky objects with enhanced clarity and detail. It features a 12x magnification power, making celestial objects appear larger and more defined. The telescope’s primary function is to capture bright and contrasty images of outer space through…
What is a 11-inch telescope? An 11-inch telescope is a robust astronomical instrument that boasts a substantial aperture of 279mm, enabling exceptional light-gathering capabilities and high-resolution imaging. The telescope’s computerized control system streamlines object location and tracking, making it user-friendly for novice stargazers. The focal length of an 11-inch telescope is influenced by the aperture…
What is a 10-inch telescope? A 10-inch telescope, such as the Orion SkyQuest XT10g, is a versatile optical instrument designed for observing a wide array of celestial objects, including planets, stars, galaxies, and nebulae. With its substantial light-gathering power, it offers exceptional performance in capturing high-quality images for astrophotography, particularly of deep-sky objects like galaxies…
What is a 9.25-inch telescope? A 9.25-inch telescope, known for its large aperture size, boasts a significant light-gathering ability and high resolution in observing celestial objects. The aperture of this telescope, approximately 25 inches in diameter, allows for a maximum magnification power of around 120x to 250x, with a theoretical limit of 463x, making it…
What is a 7-inch telescope? A 7-inch telescope is a versatile and powerful optical instrument that offers exceptional performance in observing celestial objects. With a price range that caters to both beginners and seasoned astronomers, this telescope is a popular choice for stargazing enthusiasts. Its 7-inch aperture provides superior light-gathering ability, making it 126 times…
What is a 5-inch telescope? A 5-inch telescope is a type of telescope with an aperture (the diameter of the objective lens) of 5 inches (127-130 mm). It is considered a medium-sized telescope, ideal for amateur astronomers and kids. A 5-inch telescope is a powerful optical instrument designed for observing celestial objects in the night…
What is a 4-inch telescope? A 4-inch telescope is an amateur telescope with an aperture size of 4 inches or approximately 100mm. The diameter of the objective lens or mirror in a 4-inch telescope is typically around 4 inches, which is smaller than larger telescopes, resulting in a narrower field of view. The focal length…
What is a 3-inch telescope? A 3-inch telescope is a type of small-size telescope that has an aperture (the diameter of the objective lens) of 3-3.75 inch (76-94 mm). The aperture size determines the light-gathering power and resolution of the telescope, with larger apertures collecting more light and providing clearer images. 3-inch telescopes are ideal…
What is a 2-inch telescope? A 2-inch telescope is a type of refracting or reflecting telescope that is used for both terrestrial applications and astronomy. The 2-inch measurement refers to the diameter of the telescope’s main optical component, which is either an objective lens or a primary mirror. The significance of the aperture in a…
GSkyer 80mm AZ Refractor is an entry-level scope with an 80 mm short focal length. Lightweight and compact size have made it a grab n go telescope. As a beginner scope, it will give fair views at this price range though with some flaws. For better views, you may need to add some accessories too….
Orion Skyscanner 100mm Telescope is a ‘grab n go’ telescope of small size and lightweight. It offers high-quality Newtonian reflector optics. Skyscanner 100mm is the best telescope at this low price range. This is designed especially for beginners. But experienced sky gazers also can buy it for an amazing experience at cheaper rates. Advantages and…
Celestron AstroMaster 114EQ is a beginner’s telescope. It offers an amazing experience to novice astronomers with high-quality optics. The fast and easy setup system provides no hassle to the users. Fully coated optics makes the image sharp and have high contrast. Advantages and Disadvantages of Celestron AstroMaster 114EQ Advantages Disadvantages Technical Specifications of Celestron AstroMaster…
The invention of the telescope is often attributed to Hans Lippershey, a Dutch spectacle maker. Lippershey applied for a patent for his telescope design in 1608, as noted in Lorch’s 2004 study. This marks one of the earliest recorded instances of a functional telescope. However, the creation of the first practical refracting telescope is credited…
Telescopes have opened the door to many new observations within our universe, providing us with loads of interesting facts. These interesting facts include innovations in technology, discoveries in science, and observations of celestial bodies. Facts About the Invention of Telescopes Facts About the History of Telescopes Facts About Space Telescopes Facts About Modern Telescopes Facts…
SkyWatcher FlexTube 200P is a great telescope for both beginners and experienced astronomers. It offers maximum aperture at this price range with a sturdy user-friendly mount. The collapsible tube is a great upgrade as it makes this heavy scope amazingly portable. Its high-quality optics make the observers joyful. Advantages and Disadvantages of SkyWatcher FlexTube 200P…
Apertura DT6 Dobsonian telescope is a great beginner 6’’ telescope at an affordable price. This Newtonian reflector provides high contrast sharp images to create awesome night sky memories in the mind of amateur astronomers. This is the smallest Dobsonian scope in the market with high-quality optics and construction. Advantages and Disadvantages of Apertura DT6 Dobsonian …
Celestron Omni XLT 150 EQ Telescope offers a Newtonian reflector with a rigid German equatorial mount. A large aperture, fast focal ratio, and broader views allow serious astronomers to observe the details of the Moon and planets of our solar system and deep sky objects. The sturdy focuser accepts larger eyepieces allowing a range of…
SkyWatcher StarTravel 102 AZ3 Telescope is a pretty good scope for experienced sky gazers. It is not preferable for children or beginners as it includes a lot of controls. Without prior knowledge, it may seem hard for novice users. The small size & light weight has made it an easy ‘grab & go’ scope. Full…
Explore Scientific 10″ Truss Tube Dobsonian is well-known for its high quality and relatively low cost among amateur astronomers. The unique truss design makes the scope lightweight and portable. It is able to collect 1500 times more light than the bare eyes. The entire design ensures minimal weight with maximum rigidness. High altitude bearings and…
Celestron SkyProdigy 6 Telescope is a perfect scope for a beginner as it takes unbelievably less time to set up (only 3 minutes), and gives more time for observation. It makes the first experience of a beginner hassle-free and allows observing myriads of sky objects with just a smooth hand controller. The combo of Schmidt-Cassegrain…
SkyWatcher FlexTube 250P (10″ Collapsible) Telescope is a reflector Dobsonian scope. It offers a 10’’ large aperture with 1200 mm focal length, patented Tenson Control Handle, and portability at a modest price. The flexible features have made it a reliable and great grab-and-go telescope for beginners. Advantages and Disadvantages of SkyWatcher FlexTube 250P (10″ Collapsible)…
Celestron Advanced VX 700 Telescope is designed exclusively for ‘experienced astronomers’ or sky gazers as it provides high-contrast planetary views. It offers a complete package of Maksutov-Cassegrain optical tube, robust advanced VX equatorial mount, and a sturdy steel tripod. Advanced mechanisms and software provide stunning high-quality views and images. Advantages and Disadvantages of Celestron VX…
Celestron 7×50 Cometron Binocular is a brilliant addition to the binocular series for beginner skygazers. This lightweight and durable optical instrument comes with high-quality optics at an affordable price. You can scan the sky with these binoculars to see a particular constellation or cluster. Also can be used in bird watching, wildlife observation and marine…
The Celestron 80LCM (Lightweight Computerized Mount) is the cheapest scope among the GoTo mount series of this brand. Quality optics, portability, advanced software, and automatic features have made this scope attractive to beginner skygazers. Advantages and Disadvantages of Celestron 80LCM Advantages Disadvantages Celestron 80LCM Technical Specifications Accessories for Celestron 80LCM What can you see with…
Fig 1: Celestron Travelscope 70 (Ref: Amazon) Celestron Travelscope 70 is another cheaper scope from Celestron brand though most of the users do not want to name this nothing more than a toy. Though it is sold as a terrestrial scope and for astronomical observation also, it does not do well in any of the…
Orion StarBlast II 4.5 equatorial is one of the cheapest and most available telescopes worldwide. Besides, it is a great beginner telescope at an affordable price. It is user friendly and of great quality which makes the user a hobbyist astronomer and makes cravings for more. The StarBlast line is the largest part of Orion…
Fig 1: Orion Astroview 6 Equatorial Reflector Telescope Among the 16 beginner telescopes reviewed, Orion Astroview 6 Equatorial Reflector Telescope was named one of the “Jack of All Trades” telescopes and was voted as the best telescope of the year, especially for the amateurs. This telescope is the only reflector within this price range which…
Fig 1: Celestron Omni XLT 102mm Refractor (Ref: Amazon) If you are a passionate star gazer you need a telescope that satisfies your mind. As a beginner you can start with some other cheaper 4-6 inch beginner telescope. But they will not be able to cheer you up with the views of the deep night…
ED glass is renowned for its extraordinary properties that set it apart from traditional optical glass. The abbreviation “ED” signifies Extra-Low Dispersion, indicating that this glass has a substantially lower propensity to scatter different light wavelengths, a phenomenon known as dispersion. This unique characteristic of ED glass is instrumental in mitigating chromatic aberration, often referred…
I take you all the way through the process of making a small newtonian It really isn’t that difficult and with a little bit of know-how and a few parts you can make yourself quite an impressive little telescope in the newtonian style. This is a three part series and in the first part I…
You just need a little guidance. There are lots of wonderful things that beginners can find with just a small telescope or a pair of binoculars If you are new to the whole hobby of astronomy and telescopes you are probably wondering what kinds of things you can see with just something basic like a…
I simply cannot believe they are actually doing this! Orion is releasing a new line of telescopes that are simply astounding. They are Truss-tube dobsonians and the line has three sizes of telescope: A 36 inch, a 40 inch and a 50 inch! Hard to believe. These have got to be the absolute largest aperture…
Orion has a wonderful store right on the Amazon.com website Amazon’s Orion Telescope Store Enjoy the comfort, security and great pricing of Amazon.com Orion telescopes sell a wide range of telescopes, binoculars, and accessories for astronomical and terrestrial use. One of the great things about the company is that they very much cater to all classes of…
Edwin Hubble was an American astronomer known for his significant contributions to the field of observational astronomy and his role in establishing the field of extragalactic astronomy. Hubble’s work revolutionized our understanding of the universe and its origins, and he is widely regarded as one of the most influential astronomers of the 20th century.Hubble’s career…
A Detailed Insight Into the 8-Inch and 6-Inch Telescopes Like binoculars and the corrective lens, telescopes let us see things using our eyes. For practical usage of telescopes, it is always advisable to keep away any corrective lens before viewing through the telescopes. There are many different telescopes, each designed for a specific purpose. For…
The primary mirror is a part of a reflecting telescope that collects and focuses light from distant objects. Knowing the design and material of a mirror is fundamental to understanding a telescope’s abilities, as the primary mirror is responsible for capturing and manipulating light to form images of distant celestial objects. The primary mirror’s primary…
How Galileo’s Telescope Created the Modern Science of Astronomy Galileo challenged conventional views of the universeby observing by observing objects in the sky then applying the laws of mathematics and logic to what he saw. He turned the telescope into an important tool of understanding the universe we live in. Before Galileo turned his telescope…
There are different types of telescopes available on the market depending on different features. Here we will discuss the tube assembly and light path of five types of telescopes. Fig 1: tube assembly and light path of five types of telescopes The image shows how they are different in assembly and lightpaths and they have…
William Parsons, also known as the 3rd Earl of Rosse, was an English astronomer, naturalist, and engineer who made significant contributions to the field of astronomy through his telescope discoveries. Parsons built his own telescope, the “Leviathan of Parsonstown,” which was the largest known telescope of its time with an aperture of 1.8m. Using this…
A refractor telescope is a type of optical telescope that uses a refracting lens. Refractors are made of glass or plastic, to gather and focus light from distant objects. The light is bent as it passes through the lens, forming an image at a specific point, which is then magnified by the eyepiece. Refractor telescopes…
Brass Telescopes You might have seen an old-fashioned telescope-type object used by navigators or the captain of a large wooden ship in documentaries on the 17th or 18th-century events. This is possibly the Brass telescope we are going to discuss now. This is the kind of thing you get by inheritance. It symbolizes legacy and…
James Gregory was a Scottish mathematician and astronomer, born in November 1638 in Drumoak, near Aberdeen, Scotland. He is best known for his description of the first practical reflecting telescope, now known as the Gregorian telescope. James Gregory made important mathematical discoveries, including infinite series representations for various trigonometric functions. Despite his significant contributions to…
Astronomy Project For Kids: How to Make Constellation Cups We sometimes think that astronomy is a field only for the elders. But we already know about many astronomers and star gazers, who started their journey in astronomy at an early age of life. Here we will describe an amazing astronomy project that you can do…
To make a Dobsonian telescope, start by researching designs and choosing a mirror size based on your budget and light gathering needs. Sketch a design, prepare a materials list, and cut plywood or MDF pieces for the mirror and rocker boxes. Assemble the boxes, ensuring the mirror box is light-tight, and build a mirror cell…
The Advantages of a Rich Field Telescope (RFT) A Rich Field telescope is a somewhat perplexing term. Therefore, what does this imply?What is a Telescope with a Large Field of View? They are low-magnification telescopes with a wide field of view. These binoculars provide se benefits, including viewing large sky areas.There are methods for studying…
The finderscope is a part of a telescope that helps locate and center celestial objects in the primary telescope. Knowing the design and function of a finderscope allows astronomers to accurately and efficiently locate celestial objects. The finderscope is a secondary telescope mounted atop the Optical Tube Assembly (OTA), designed specifically to help astronomers locate…
Resolving power of a telescope refers to the ability of a telescope to detect the small details. This article will explain this term so that you can grasp it easily and provide a lot of photographs and drawings. Firstly, let’s look at a double star. What is resolving power? It is the ability of a…
Refracting and reflecting telescopes differ in their method of collecting and focusing light to form an image. Refracting telescopes, or refractors, use a lens, while reflecting telescopes, or reflectors, use a mirror. The image formation process differs, with refractors using the lens’s refractive power and reflectors using the mirror’s curvature. Chromatic aberration is a problem…
Christiaan Huygens was a Dutch mathematician, astronomer, and physicist who made significant contributions to the field of telescope design. He invented the Huygenian eyepiece, a type of compound eyepiece that reduced image distortion, and built refracting telescopes with improved optics and a focal length of 67 meters. Huygens’ telescope designs and innovations allowed for better…
Astronomy as a Hobby – Guide There’s something inspiring and awesome about stargazing that makes you reflect on our lives as humans on Earth. Simply viewing starts at night can deepen your sense of awareness, but having the right tools can also be helpful to increase your knowledge and wonder about the solar system. That…
A telescope is an optical instrument designed to observe distant celestial objects. Telescopes have types, each with specific setup requirements and basic operational principles. Eyepieces are crucial components of telescopes, allowing for magnification and focus adjustments. Use a telescope by following a step-by-step guide tailored for beginners. Setting up a telescope requires preparation and attention…
Buy Used Telescope and Accessories from eBay; Check out the deals. eBay is a great source to get telescopes. Here we have enlisted the different second-hand telescopes and accessories available on eBay. This list will help you get the idea and the direct link of the products regarding telescopes without finding them arbitrarily on eBay…
Sir Isaac Newton invented the reflecting telescope in 1668, a significant contribution to the field of optics that impacted the development of telescopes during the scientific revolution. His main innovation was the use of a concave mirror to gather light, which helped combat chromatic aberration and revolutionized telescope technology. Newton’s reflecting telescope design, known as…
Johannes Kepler was a German astronomer, mathematician, and natural philosopher known for his work in astronomy, optics, and the invention of the Keplerian telescope. Kepler’s telescope design, known as the Keplerian telescope, used a convex lens for the eyepiece and a concave lens for the objective, providing higher magnification and a wider field of view…