Refracting telescopes are the type of telescope we think about, when we use the word - telescope. There are many benefits to buying a refracting telescope. As you read this article, you will discover more about these benefits, and will be able to make a decision on whether to buy refracting or go for reflecting telescopes.
Refracting telescopes operate with lenses. This is the Galileo telescope, and works with light entering an objective lens, traveling through the telescopes tube, and meeting your eye through the optical lenses.
There is something to note about refracting telescopes, and that is that there is a limit with how big a telescope you can buy. Over 150mm objective lens sizes, the price becomes much more expensive than a reflecting telescope.
So, if you want to go for a larger sized telescope, then you may find price verses performance is better with reflecting telescopes. However, there are some benefits of refracting telescopes, which make them much better than reflecting telescopes.
A refracting telescope is all enclosed. And here is where many benefits can be found, over reflecting telescopes. Being closed to the elements, you will find that refractors are much more reliable and maintenance free.
With reflectors, you have to […]
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It is actually quite easy to make a timeline with regards to the invention of the telescope as well as how it has evolved over the years. Much has been written about the telescope and good records have been kept with regards to new technologies and inventions. Basically, the telescope timeline looks something like this:
1609 - Galileo first invented the telescope. Though it was crude, it still did the trick and allowed him to look into space for the very first time other than with the naked eye. Galileo’s telescope was a reflecting one causing light to bounce off a mirror when looked at through a lens.
Mid-1600’s - Johannes Keplar came up with the idea of a refracting telescope that would widen the field of view as well as improve the quality of the image. He did this by changing the shape and the placement of the lenses, but doing this caused little circles of color that would surround bright objects - chromatic aberration.
Late 1600’s - As the century began to draw to a close, telescope makers were realizing that with a bigger lens, you could see much more. With a bigger lens, the […]
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If you are new to astronomy and are clueless as to how to use your telescope, rest assured, you are not alone. However, it’s really not that difficult learning how to use a telescope. It just takes a few adjustments and knowing what equipment your telescope has. You must be familiar with the pieces of the telescope and how each of them work. The rest is easy.
The first thing you will need to know in learning how to use a telescope is does your telescope have a polar axis or not. A polar axis is intended to track. A telescope without a polar axis is merely a point and look, or what is called Alt-Az. Alt means altitude and Az means azimuth, where Alt is the distance above the horizon, and Az is the direction in a circle around the horizon. If you have an Alt-Az mount, just skip the polar alignment step.
If you have a polar axis meaning that your telescope is intended to track the stars, then find north, and make sure the polar axis is approximately lined up in that direction. It does not have to be too accurate, but make […]
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