They may be more expensive as large high-quality lenses are more costly to produce, The cheaper lenses are more susceptible to aberrations, They have very high initial cost relative to the reflector telescope.Īll refractors telescopes suffer from an effect called the chromatic aberration that produces a rainbow of colors around the image, One way to reduce this problem is to use the multiple compensating lenses to counteract the effects of this kind of aberration. There are not reflections or interruption of the light path, there is near permanent optical alignment, minimum maintenance, and long focal ratios can mean the use of longer focus, simpler and eyepieces, R efractor telescopes are rugged after the initial alignment their optical system is more resistant to misalignment than the reflector telescopes.
![refractor telescope refractor telescope](https://images-na.ssl-images-amazon.com/images/I/713CrMjolAL.jpg)
Advantages of Refracting Telescopesīecause of their simple design, they are generally easy to use and more reliable as their optics are permanently fixed and aligned, They are superior revolving power per inch of aperture and superior performance in inferior conditions and they have image steadier. The basic refracting telescope has two lenses, The first lens is called the objective lens which is a convex lens that bends the incoming light rays to a focal point within the telescope, The second lens is called the eyepiece which takes the light from the focal point and spreads it out across the retina of your eye, It makes the object seem much closer than it really is. Refracting telescopes use lenses to bend the light to a specific focal point such that the object will be magnified to the viewer, It is the simplest type of telescope and the most recognizable, Its design is very simple, It is essentially a tube with a lens at each end. The telescope is an instrument used to see the objects that are far away, They are used to view the planets and the stars, Some of the same optical technology that is used in the telescopes is also used to make the binoculars and the cameras, There are three main types of telescopes which are the refracting telescopes, the r eflecting telescopes & the catadioptric telescopes.
REFRACTOR TELESCOPE UPDATE
The disadvantages are mainly to do with the hassle of operating in space, It is much more expensive, so, you can’t have such a large telescope, If things go wrong, It is much harder to repair them, You can’t update the instruments, So, they quickly become out of date, Also with the modern technique of Adaptive Optics, ground-based telescopes are catching up with the HST. The advantage of using a telescope in space is that you don’t have to look through the Earth’s atmosphere, For very detailed observations the atmosphere is pretty murky and horrible, You have probably seen HST pictures, and they are much more detailed than you can get from the ground.