In this post we’ll attempt to answer the question ‘What is a Refracting Telescope?’ without going into too much detail and confusing the beginner.
In simple terms, a refractor telescope uses a glass lens at its end to gather light, and as it travels through the telescope, the light bends. The light then bounces off a small mirror into the eyepiece, where the viewer sees a larger, sharper image of the object they’re looking at. Another name for this type of scope is a “dioptric telescope.”
“Refracting” literally means to bend, and the first models of telescope were refractors. When a wave of light passes through a lens and changes direction, this is known as refraction. Galileo and others who designed the original technology found this method to be the easiest to make. Although Galileo Galilei is the name always associated with early telescopes he wasn’t the first to invent one. He was in Venice in May 1609 when he heard of an invention by a Dutch spectacle maker from Middelburg called Hans Lippershey who had tried unsuccessfully to patent a refracting telescope. Galilei constructed his own version of this design based on Lippershey’s invention and has gone down in history as the inventor.
Scopes used on rifles and other guns are refractors, as well as the small telescopes you find at general department stores. This type of scope tends to be tiny, but it’s perfect for looking at the moon and planets within this solar system.
The benefits of choosing a refractor over any other type of scope start with the placement of the lens. It’s sealed off, so you don’t have to worry about cleaning it often, if ever. Also, images seen through the telescope are sharper and steadier thanks to the tube being immune to changing temperatures and climates.
There are very few large-scale refractors used for research because of the disadvantages these scopes carry with them. Few and far between, these drawbacks are the reason that most refractors are for commercial use and small observatories. The largest refractor telescope is at Yerkes Observatory, and measures in at 102 cm.
Chromatic abberation is one of the most common downfalls; light wavelengths bend differently, and because of this, you may see a rainbow effect around the object you’re viewing through the lens. Refracting lenses don’t allow ultraviolet light through them at all, and the thickness of the lens determines the clarity of the other lights that pass through. Also, the glass lens itself will eventually dip thanks to its own weight because it can only be supported by its ends.
What is a Refracting Telescope – Prices
Prices on these scopes vary, but considering the difficulties they present for makers of large scopes, the versions available to the public tend to be within a reasonable price range. For those looking to set up a scope in their backyard for clear nights, roughly $200-400 will get you a great quality starter scope. If you have more to spend, you can look into computerized telescopes, ones with tracking devices, larger lenses, or higher magnification rates. The prices depend on the maker and the technology.
The beginner lenses generally measure 60mm, 80mm, 90mm, and offer very clear pictures regardless of their small size. Telescopes come with a tripod to set them on, usually with a rotating ball at the center for easy navigation. You can buy a finderscope, which is essentially a miniature telescope that sits on top of the main scope and helps you focus in on the object you’re viewing. It makes observing objects at a distance much easier, and much more accurate.
Overall, if you’re looking to view the moon’s surface or planets when they are within range, a refractor telescope is a perfect purchase for you as a beginner.
- Maximum times: 350 times, you can clearly see the circular island on the moon! Eyepiece sr4mm only = 700/4 = 175 times (suitable for astronomical observation), eyepiece only h12.5mm = 700 / 12.5 = 56 times (very suitable for long distance shooting), eyepiece only 20mm = 700/20 = 35 times (very suitable Sightseeing, watching games, concerts)
- Fully multi-coated lenses with bright images: 400mm focal length, 70mm aperture Occer telescope, high-resolution full-multi-coated lens coating, excellent transmittance, can clearly observe objects, and even make objects more Easy to shoot. Moreover, these astronomical beginner telescopes have a finderscope, which can help you quickly aim at the target, and then you can use the telescope to observe
- Easy to set up: High-power astronomical telescopes can be installed quickly without additional tools. Absolutely suitable for beginners. In addition, the refracting telescope is designed with screws that can adjust the tightness of the focusing mechanism
- Adjustable tripod: The telescope comes with an adjustable aluminum tripod, which can be used in many different viewing positions, and the inner color box packaging is more decent
- U-shaped theodolite, smooth movement, easy to use, equipped with finderscope, to help users quickly determine the position of the celestial body, easy to use
- Amazon Kindle Edition
- English, Neil (Author)
- English (Publication Language)
- 284 Pages - 09/28/2010 (Publication Date) - Springer (Publisher)
- ★【PROFESSIONAL ASTRONOMICAL TELESCOPE】This professional telescope comes with 4 sides green film objective lens, imaging clear, with high light transmittance, reduced objective lens to light absorption, reflection and scattering, image quality is good, day and night can seen clearly. A perfect astronomy gifts for astronomy lovers. The telescope is a perfect Christmas or birthday gift for kids or beginner astronomers.
- ★【QUICKLY LOCATE THE TARGET】This travel telescope equipped with adjustable theodolite tripod, the height is adjustable, flexible positioning, and it built in 48° forward prism, finderscope, which will let you find the target more easily and quickly. And it equipped with a storage tray which provides convenient space, makes more stable and comfortable for observation.
- ★【EQUIPPED WITH 2 EYEPIECES】This astronomical telescope equipped with 2 eyepieces (10mm+25mm), which provided medium and high power magnification, different magnifications for different targets, it allows you to view wide variety of objects, such as bird watching, viewing the sun and the moon, environmental monitoring, watching the planet, etc.
- ★【HIGH DEFINITION IMAGING】This reflector telescope with high quality glass lens, full surface multi‑layer coating film, effectively improve the optical performance of the lens, which makes it has a high degree of imaging reproduction, real and sharp.
- ★【ADJUSTABLE TRIPOD】This telescope allows for many different viewing positions with a adjustable aluminum alloy tripod and a carry bag, the telescope and tripod can fit inside the bag for easy traveling and storage.
Last update on 2021-10-17 / Affiliate links / Images from Amazon Product Advertising API