Barlow Lenses of a telescope

Barlow lenses were invented and developed by Peter Barlow and consequentially bear his name. The lenses are not only used in telescopes but also in microscopes to serve the purposes of medicine, science, etc. this type of optical lens is usually used in combination with other different types of optics as well as optical systems. The result of such use is a substantial increase of the focal length of the system where Barlow lenses are used. Barlow lenses are widely used in telescopes. It is a very efficient way of increasing the magnification of your tool. The lens is simply…

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Telescope aperture or Focal length?

Every telescope can be chosen on the basis of two criteria because one of the main characters that will be taken into account is either aperture or focal length. Aperture in a telescope is the objective length diameter when it is referred to a refracting telescope or the primary mirror when it is referred to reflecting telescope. So, if you switch to greater focal length, it is clearly better to observe remote objects in space such as the Moon, planets, etc. or if you require better observation of DSO (deep space objects) such as galaxies getting a device with greater aperture figures is better.

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Telescope mounts types

There are several telescope mount tripods that can be purchased today. Every type serves specific needs and purposes and suited for certain individuals depended on their level and ability to use the tool. All of telescope mount tripods differ in price and have different features. There are four major types of mounts that can be found on the market today. Each mount has its specific name, so that will be much easier to distinguish them among each other. The range of these types can be defined as follows: Alt-Azimuth Equatorial Mount Dobsonian Mount (which is named after Mr. John Dobson)…

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Moon rises. It`s stargazing time!

Moon is the best object for beginner observers and not only for them. Its close location to the Earth allows stargazers to use not too expensive telescopes and even binoculars. Moreover, you can see the biggest sights with the naked eye. Therefore, can you imagine that having a powerful telescope, you can see the famous base of astronauts and traces of their rovers on the Moon’s surface? The Moon viewing can open to you many surprising and even strange things, like these: (here will be the photos) Lunar phases A month of the Moon continues 29 days. This time is…

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Telescopes types: optical schemes

There are three different types of telescopes: reflector, refractor and catadioptric. Each type has its own advantages and disadvantages and suitable for different cases. This article is going to help you to understand, which is suitable for you. So, let`s see, what`s better: telescope reflecting or refracting, or catadioptric, maybe? Refracting telescopes A refractor, or a lens telescope, is the oldest type of telescopes. It was invented in 1609 by Galileo Galilei and was updated in consequence. Firstly, a refractor used two lenses: convex as an objective and concave in an eyepiece, that caused spherical and chromatic aberrations. This scheme…

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