Reflecting telescopes are used for a long time now. They were first invented in the 17th century and are sometimes called a reflector that has led to confusion with the reflecting and refracting telescope. The refracting telescope precedes the reflecting telescope but it’s rarely used and most telescopes that are used these days are the reflecting form.

This is because refracting telescopes suffer from chromatic aberrations, a result of the various refractive indexes on the lenses in these telescopes. What it means is that around each picture, color fringes appear. While it can be reduced, it is simpler to utilize a reflecting telescope.

Design Considerations

The first reflecting telescope to solve the problem of chromatic aberrations was a telescope that was invented by Sir Isaac Newton. The Newtonian design for reflecting telescopes is still in use today and is one of the simplest designs of modern telescopes available today. It’s also one of the most affordable telescopes. Anyone is deciding to make their own telescope could put together a reflecting telescope of this kind.

The Cassegrain or Classic Cassegrain telescope is also extremely popular and it is in part because of its compact design. This is accomplished by folding the optics in the telescope. While the design does lose some light gathering power, it has a benefit with a closed tube which stays clean at all times.

Most professional telescopes follow the Ritchey-Chretien design. It’s an offshoot of the Cassegrain design and has two hyperbolic mirrors. This design characteristic differs from the Cassegrain, which uses one parabolic primary mirror instead. This type of telescopic lens is ideal in photography.

Another reflecting telescope which is used is the Yolo. One of the problems associated with this telescope is astigmatism. This can lead to double vision and particular blind spots. It can be corrected however and an advantage of this telescope is the fact that this eliminates the problem of coma, a problem prevalent in many telescope designs.

Based on your certain needs, there are several types of reflecting telescopes that could fit your specifications. For amateur telescope building and astronomy, beginning with a Newtonian telescope is a good place to begin. It is also the most affordable kind and a great starting point when you are just starting to explore the world of telescopes. When you have ignited your passion, there are various other designs which you can try out for star gazing and wide field observation.

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