What telescope is the best one for me?
Although there may not be a definitive answer to the question, the choice can be narrowed down. First examining the available options, and then matching one telescope design to the desired applications may achieve this.
Quite often, the purchase of a first telescope is based on little or no information. Unfortunately, the consumer usually ends up with an inadequate telescope. That is, it will not perform to expectations due to its size, poor optical quality, and inadequate mounting. They are very frustrating to use, and can quash any interest the user may have in exploring the night sky. Generally, these are the typical telescopes found in department stores or camera shops. On the other hand, some people “bite off more than they can chew” when purchasing a first telescope. That is, they may purchase a scope that is too big and cumbersome, or too complicated. Invariably, in both circumstances, the telescope often ends up collecting dust in a closet. To help avoid either of the previous scenarios, consider the information and guidelines listed below when searching for a first scope. Although it is true that larger telescopes will amplify the sky-glow in light-polluted areas more so than smaller scopes, they will also amplify the light emitted from the object itself more, thus providing a better view. Essentially, image contrast is the key issue. Larger telescopes can utilize special filters (known as Light Pollution Reduction filters) more effectively than smaller telescopes, the contrast between the sky background and the object is further improved.Larger telescopes will amplify the sky-glow in light-polluted areas more so than smaller scopes, they will also amplify the light emitted from the object itself more, thus providing a better view. Essentially, image contrast is the key issue. Furthermore, because larger telescopes can utilize special filters (known as Light Pollution Reduction filters) more effectively than smaller telescopes, the contrast between the sky background and the object is further improved. What objects do you want to observe?For those who are interested primarily in viewing the brighter objects, such as Jupiter, Saturn, and the Moon, a small telescope is adequate. For example, a 70mm diameter refractor will provide a pleasing view. If fainter, deep space objects, such as galaxies, nebulae, and star clusters are the objects of choice, a telescope with greater light-gathering ability (larger aperture size) is needed. In such instances, common choices by the novice are 4.5" to 6" diameter reflectors, or 90mm to 100mm diameter refractors, which will provide better views. Overall, however, all things being equal, the larger the aperture size, the brighter and more detailed the object will appear.
9.12.08
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