Posts Tagged ‘magnification’
September 20th, 2011 | 
Author: One of the things that initially surprised me when I bought my first telescope, the company was apparent from visual and real (or actual) field.
If you look through his telescope, is the area of sky they see as the real (or real) field. The field of view (FOV) of the telescope is determined by the design of the telescope eyepiece.
To calculate the field you must first find the value of the field. Each eye has its own value of the field, provided by the manufacturer of the eye.
Next, calculate the magnification. To do this, divide the focal length value of the telescope by the focal length of the eyepiece. For example, if your telescope has a focal length of 650 mm (that is the case of a Sky-Watcher Explorer 130 P) and the eyepiece has a focal length of 10mm, the magnification of your telescope 650/10 = 65.
Finally, the apparent field divided by the increase in the actual field / get real. For example, if the eyepiece has an apparent field of 50 degrees and a magnification of 65X, the current field of view 50 degrees / 65X = 0.77 degrees.
If the eyepiece has an apparent field of 55 degrees and a magnification of 65X, the current FOV is equal to 55 degrees / 65X = 0.85 degrees.
Therefore, the larger the apparent field of view, the greater the actual field / real. Note also that the reduction increases, a wider angle to get further increases.
If you do not know what the apparent field eyepiece, you can estimate the actual field / property using the following formula:
42/Magnification
Therefore, for the example above, we 42/65 = 0.65 degrees.
This is only an estimate, but good enough, you get an idea of how much of heaven will try to get through one eyepiece of the telescope.
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“Mono” only way. With the help of telescopes, you can zoom in slightly for a better view of distant objects. Monoculars are also known as a half-pair of binoculars.
Monocular telescopes require the use of prisms and lenses to view distant images. Normally, the images appear reversed in a telescope. The two prisms will help correct the orientation. Monoculars are mainly used to display images in two dimensions.
Monocular telescope was first used in the collection of military and other. But now they are made available to the general public. You can easily order them to online stores or other retail stores. Their use is no longer limited to professionals, many children and other adventure seekers use them, and they can be used as a gift.
Monocular telescope may be of different types. Of them belong to the most popular hunting at night or telescopes. So if you like adventure or hunting, then these telescopes are a must for you. Some of the activities you can enjoy the use of telescopes, star gazing, bird watching or hiking. You can also use it for watching sports events.
If you compare with other telescopes, monocular optical devices, you will see that their prices are very reasonable. Increasing competition among competitors has allowed almost all of us who buy telescopes. You should visit the different stores, if you want to find telescopes at low prices. You need a proper investigation of the technical data and know-how of the product before you decide to buy the product.
Monoculars are very useful and serve the requirements and needs of all enthusiasts. Sometimes people use the visual mediation monocular to see distant objects. If it requires a high magnification and bright image next to some good resolution to see the objects, then it is best that you opt for telescopes and more sophisticated and upscale. Today, smaller versions, called Pocket telescope is used for less severe applications.
Monoculars are essentially a combination of telescopes and binoculars, but they are much smaller than one of them.
If you see monocular feel that this is a simplified version of the telescope and to a degree that’s true. The only difference is the expansion and stabilization necessary to identify the scope is much higher than that of a monocular telescope.
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Premier Celestron Scope was built primarily for beginners, as its name implies. The simplicity of it should not be confused with a lack of performance because it is enough to help children and even adults love their importance to observe the night sky.
Weighing six pounds, the Celestron Scope First is compact and portable.
Scope has a first mount Dobson style, which allows easy navigation and smoothly in all directions. The tube is a Newtonian, and that means a shorter focal ratio and a wide field of view. The glass is applied to optical images of the production components that are neat and clean. Celestron is known for producing quality and scope of First abound.
One of the reasons why the Premier Celestron Telescope Scope 21024 is suitable for beginners, because there is no assembly required. As simple as it is to use the features to read the manual carefully to maximize the product. This manual contains clear instructions that will help improve the appearance of the universe.
To prevent damage to your telescope, never point the sun room to prevent heat buildup inside. Do not use a sunscreen can eventually damage your eyes or break the telescope from the heat.
With two eyepieces Celestron Scope First: a 20mm and a 4 mm. Celestron sells an accessory kit that over magnification eyepieces and clearer picture of the object. For beginners and children, the first range is a great way for users to start observing the night sky. Even those with experience will enjoy the ease and portable.
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