Why Are Telescopes Tubes

Randall Edwards

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Why Are Telescopes Tubes
surce: stellafane.org

Telescopes are an essential tool for astronomers, allowing us to observe distant stars, galaxies, and even planets. Telescopes come in many shapes and sizes, but the most common type is the tube telescope. This type of telescope is used for both visual observation and astrophotography, and has been around since the late 19th century. The tube telescope consists of a lens or mirror, a tube, and a mount. In this article, we will explore why telescopes are tubes and why this design is the most efficient for astronomy.

The Advantages of a Tube Telescope

The main advantage of a tube telescope is its stability. When a telescope is mounted on a stationary base, it is less prone to vibrations and other external factors that can distort the image. This is especially important when doing astrophotography, as any slight movement of the telescope can lead to blurred images. Additionally, the tube design helps to reduce weight, which makes the telescope more portable and easier to transport.

Another advantage of the tube telescope is its ability to store light. When light passes through a lens or mirror, some of it is reflected off the surface and lost. This is known as the “light loss” effect. By enclosing the lens or mirror in a tube, the light can be stored and used more efficiently. This allows astronomers to observe more faint objects in the night sky.

The final advantage of the tube telescope is its affordability. Telescopes with a tube design are usually less expensive than those with other designs. This makes them ideal for amateur astronomers who are just getting started in the hobby.

The Disadvantages of a Tube Telescope

The main disadvantage of a tube telescope is its size. The tube design makes the telescope bulky, which can be difficult to transport and store. Additionally, the size of the telescope can limit the field of view, which can make it difficult to observe faint objects in the night sky.

Another disadvantage of the tube telescope is its lack of flexibility. Telescopes with other designs, such as the Dobsonian or Newtonian, can be used for different types of observations. However, the tube telescope is limited to visual observation and astrophotography. This makes it less versatile than other types of telescopes.

Finally, the tube telescope is more prone to deformation. As the telescope ages, the tube can become distorted and the image quality can be affected. This is especially true if the telescope is not well maintained or is exposed to extreme temperatures.


The tube telescope is the most common type of telescope used by astronomers today. It offers several advantages, including stability, light storage, and affordability. However, it also has some drawbacks, including its size, lack of flexibility, and susceptibility to deformation. For these reasons, it is important for amateur astronomers to consider all of the pros and cons before purchasing a telescope.

How Do Telescopes Work | Earth Lab

Greg Foot explains the inner workings of a telescope. Science has come a long way since the first two lens prototype invented back in 1608. Subscribe for more awesome science: bit.ly/SubscribeToEarthLab 1 space.com/21950-who-invented-the-telescope.html 2 astro.uchicago.edu/vtour/inside/stats.html 3 gtc.iac.es/gtc/gtc.php 4 space.com/22505-worlds-largest-telescopes-explained-infographic.html 5 …

Why are telescopes in tubes? The tube is an important element of your Newtonian telescope: It holds all the optical parts in alignment, it shields the optics from. The unique look of a carbon fiber telescope tube is a clear sign that you take your astronomy equipment seriously and value quality and attention to detail. You can request a quote by., Why Are Telescopes Tubes.

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