Introduction • 1
INTRODUCTIONINTRODUCTION
INTRODUCTIONINTRODUCTION
INTRODUCTION
Welcome to the Celestron world of amateur astronomy! For more than a quarter
of a century, Celestron has provided amateur astronomers with the tools needed to
explore the universe. The Celestron G-9
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continues in this proud tradition
combining large aperture optics with ease of use and portability. With a mirror
diameter of 9.25 inches, your Celestron has a light gathering power of 1,126 times
that of the unaided human eye. Yet despite its large aperture, the Celestron G-9
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optical system is extremely compact and portable because it utilizes the Schmidt-
Cassegrain design. This means you can take your Celestron G-9
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to the moun-
tains or desert or wherever you observe.
The Celestron G-9
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is made of the highest quality materials to ensure stability
and durability. All this adds up to a telescope that gives you a lifetime of pleasure
with a minimal amount of maintenance. And, your Celestron G-9
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is versatile -
it grows as your interest in astronomy grows.
Your Celestron G-9
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is not limited to astronomical viewing alone. It can also be
used for terrestrial viewing to study the world around you. All you need to do is
take the time to familiarize yourself with your Celestron telescope and its opera-
tion.
Read the assembly instructions through completely before you attempt to set up
your Celestron
G-9
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telescope. Then, once you’ve set up your Celestron G-9
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you should read the section on ‘Telescope Basics’ before you take it outside and
use it. This will ensure that you are familiar with your telescope before you try to
use it under a dark sky. Since it will take a few observing sessions to familiarize
yourself with your Celestron G-9
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you should keep this manual handy until you
have fully mastered your telescope’s operation. After that, save the manual for
future reference.
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