Meade Telescope-Beginners and Beyond by Eriani Doyel

The Meade Telescope was first created in 1972 with the idea of designing telescopes and accessories that everyone, from beginners on up could use to enhance their knowledge and understanding of the skies. In 1977, the company designed and manufactured its first two “in-house” models-reflecting telescopes and offered them to the public. When the orders poured in, they quickly became aware that they had not made enough and all orders were put on back-order. The company offered the eager Meade telescope customers a refund in a hand-written note explaining the situation. Since that time, they have remained one of the top telescope manufacturing companies in the world.

If you are a beginner, you may be wary of purchasing your first telescope. The prices range from under fifty dollars to the thousands. A good beginning telescope like the Meade telescope will have all of the basic functions and be easy to operate even for the most inexperience astronomer. The most basic telescope in the Meade family is the Meade DS-2130ATS, which is a reflective telescope (uses mirrors to gather light and reflect images) and it offers very good clarity and detail.

The NG/NGS Series offers a reflective Meade telescope with computer capabilities and a manual mount that makes it easy to move and adjust. Another beginning level telescope is the AZ series. These are refractor telescopes (use curved glass lenses to collect light and images for viewing) that are great not only for deep space viewing, but also for terrain on the earth. The final series in the Meade Telescope family is the EQ series. These telescopes have large apertures for the best quality viewing. Aperture is the most important factor in how well a telescope can collect and display images.

You can find 12 different series in the Meade Telescope line of beginner and specialty scopes. They also have kits for those who want to personalize their scope for their needs. For instance if you would like to view earth terrain, or if you are interested in space photography there are kits that you can order with all of the Meade telescope equipment you will need in the kit. They have special lenses and other accessories like mounts, stands, and so on and so on. They make it very easy to get into the astronomy hobby at any price level. Check out the reviews and their site to make the most informed choice.

Eriani Doye writes ideas for the home and family. For more information about Meade Telescopes, visit telescopecom.com.

What is a Reflecting Telescope?

by Alexander Sutton

A reflecting telescope is one of two kinds of optical telescopes, refracting and reflecting. A reflecting telescope uses a single or combination of curved mirrors which reflect light to form an image. The reflecting telescope was invented in the 17th century as an alternative to the refracting telescope. The reflecting telescope was made to correct the server chromatic aberration that was part of working with a refracting telescope. Reflecting telescopes also create other aberrations, but they allow for a very large diameter which is helpful with research telescopes. The reflecting telescope comes in many designs which improve image quality. Reflecting telescopes are often referred to as “catoptric” telescopes.

There are many technical considerations to be aware of when using a reflecting telescope. Various aberrations are caused by the reflecting telescope, such as that the inner and outer zones of the telescope may not share the same focus. Spherical aberration can be eliminated with non-spherical mirrors.

Other aberrations are also common with reflecting telescopes. A coma may appear which is when a variation of telescope magnification may cause radial smudging which worsens at the edge of the visual field. Astigmatism may also occur around the focus of the aperture. Distortion of the field of view does not affect objects, but may harm sharpness. The best image plane is in general curved. This may not correspond to the detectors shape and may later cause focus errors. There are other reflector designs referred to as catadioptrics that correct some aberrations.

The majority of research-grade telescopes are reflectors. This is because, unlike a lens, the mirror does not need to be free of imperfections; it merely needs to be polished. Also, light of different wavelengths travels through a medium other than a vacuum at different speeds. The reflectors also work in a wider spectrum of light because certain wavelengths are absorbed when passing through lenses in comparison to reflecting off of them.

Alex Sutton has worked in the telescopes profession for nearly 11 years. For more information please visit telescopes

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