There is a bewildering array of choices and options out there for astronomy equipment. This section will give you to knowledge to make informed purchasing decisions before you open your wallet.

Telescope Buyer's Guide
Given the bewildering array of telescopes on the market, how does an enthusiastic but inexperienced consumer choose the right one? To answer this question we will explain the differences between specific telescope types and let you know what's really important.
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Choosing Eyepieces
They're the things you look into, but they also determine the telescope's power and influence the quality of the image you see. Here's what you need to know about them.
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Choosing a Binocular
Not sure what pair of binoculars to get for astronomy?
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Telescope Mounts
Do you know an equatorial mount from an altazimuth? We review the different kinds of mounts, a critical component in any telescope setup.
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About Finder Scopes
What does a finder scope do and what's the best way to use it? We aim to explain in this informative article.
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Filters in Astronomy
These simple accessories can dramatically enhance images of the Moon, Sun, planets, and deep-sky objects seen with a telescope. The different types and how they work are described in this article.
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The Benefits of Barlow Lenses
Why is a barlow one of the most useful accessories an amateur astronomer can have? If you read on, more power to you! (That's a hint.)
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Camera Adapters
Just a quick overview of the different types of adapters used to attach 35mm cameras to telescopes.
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Apparent Field vs. True Field
A quickie on the concept of field of view, in case you were wondering what's true.
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Telescope Power (Magnification)
So, how much power can I get from this telescope, and isn't really high power the name of the game in astronomy? Here's a quick lesson on this important subject.
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Image Orientation: Which end is up
Telescope optics can flip images of objects upside-down or side-to-side. So you won't be confused, we'll tell you what's up (literally).
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The Dobsonian Story
This oddly named type of telescope has made big telescopes more affordable and easier to set up and use. Here's a brief overview.
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Telescope & Binocular Glossary
Telescopes and Binoculars from A to Z.
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