![]() They need time to adjust to the temperature if being taken from inside a warm house to outside in the cold, or else the image suffers.Although more advanced refractors do not suffer from this. Some cheaper refractors can suffer from something called chromatic aberration which is distortion around the edge of the image.They generally provide good quality and performance in relation to price.The lenses do not require any recoating as the mirrors occasionally do in reflector telescopes and no alignment or “collimation” is needed. They require the least maintenance of any of the three types of telescope.They are usually portable and light to carry, so good as “grab-and-go” telescopes.They are the easiest to use of the three telescope types.In particular, the lenses have improved so the tubes can be shorter, and lighter materials have become more commonly used so they are less heavy.īoth these things together mean that the performance of refractors has improved in relation to size and weight, as well as cost. However, in recent years refractor telescopes have become more popular again as technological advancements have improved their performance in relation to price. In the following decades, their popularity fell as other kinds of telescope emerged. When amateur astronomy first became a popular hobby in the 1960s they were the best-selling type of telescope. Refractors were the first types of telescope invented in the 1600s. They feature the classic telescope tube that is narrower at one end where you look through and see what the other end is pointing at.Ī refractor telescope uses a lens system to capture light. This is what distinguishes it from reflector telescopes that use mirror systems, and catadioptric telescopes that use a combination of mirrors and lenses.įor most people, especially beginners, the internal lens/mirrors system might seem unimportant but refractors, reflectors, and catadioptrics do have different characteristics that may make them more or less suitable for different telescope buyers. ![]() Refractor telescopes (often also called just “refractors” or “refracting telescopes”) are the type that most people picture when they think of a telescope.
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