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Advantages and Disadvantages of Telescopes

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One of the first advantages of reflecting telescopes is their cost. Refracting telescopes use lenses instead of mirrors. These lenses are considerably expensive and time-consuming to make. Reflecting telescopes use mirrors that are easier and less expensive to make. One of the next advantages of reflecting telescopes deals with aberration. Aberration refers to faint colors that appear around certain celestial objects such as Jupiter and the moon. Reflecting telescopes usually don’t have as many problems related to aberration as refracting telescopes do. All though numerous advantages of reflecting telescopes, they do have a few disadvantages. One of the first disadvantages deals with maintenance. The mirrors used in reflecting telescopes need to be recoating after a few years in order to function properly. These telescopes are also very susceptible to damage if you handle them roughly. Refracting telescopes use lenses that don’t need to be recoated like mirrors. Refracting telescopes have lenses that are fixed in the optical tube. The second mirror used in the telescope will create a central obstruction. This will cause light to be scattered in reflecting telescopes, which will result in the image losing contrast.
Coma refers to a defect in the design that causes stars to appear to be comets when you view them at the edge of the field of view. This is especially a problem with reflecting telescopes that have smaller focal ratios. Reflecting telescopes require much more maintenance and are more susceptible to damage caused by rough handling. The second mirror used in the telescope will also cause light to be scattered which will result in the viewed image losing some of its contrast. Know that you know what’s best and what’s not, you will start taking good care of it if you have it or if you planning to have it.
Now that you know the differences you can buy it and take care of it and call on your friends to enjoy the wonders that you will be seeing together. They will also appreciate that you thought of them and return the favor in the near future.

Advantages and Disadvantages of Telescopes  20111114774.7401 Advantages and Disadvantages of Telescopes


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