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Congratulations on your purchase of the Celestron Advanced Series telescope (AST)! The Advanced Series of telescopes come in
standard (non-computerized) and computerized GT models. The Advanced Series 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. Furthermore, your Celestron telescope is versatile — it will grow as your interest grows.
The Advanced GT Series ushers in the next generation of computer automated telescopes. The Celestron Advanced GT series
continues in this proud tradition combining large aperture optics with the sophistication and ease of use of our computerized
GoTo mount.
If you are new to astronomy, you may wish to start off by using the built-in Sky Tour feature, which commands the telescopes to
find the most interesting objects in the sky and automatically slews to each one. Or if you are an experienced amateur, you will
appreciate the comprehensive database of over 40,000 objects, including customized lists of all the best deep-sky objects, bright
double stars and variable stars. No matter at what level you are starting out, the Advanced Series telescopes will unfold for you
and your friends all the wonders of the Universe.
Some of the many standard features of the Advanced GT include:
• Fully enclosed optical encoders for position location.
• Ergonomically designed mount that disassembles into compact and portable pieces.
• Database filter limits for creating custom object lists.
• Storage for programmable user defined objects; and
Many other high performance features!
The AST’s deluxe features combine with Celestron’s legendary optical systems to give amateur astronomers the most
sophisticated and easy to use telescopes available on the market today.
Take time to read through this manual before embarking on your journey through the Universe. It may take a few observing
sessions to become familiar with your telescope, so you should keep this manual handy until you have fully mastered your
telescope’s operation. The Advanced GT hand control has built-in instructions to guide you through all the alignment procedures
needed to have the telescope up and running in minutes. Use this manual in conjunction with the on-screen instructions provided
by the hand control. The manual gives detailed information regarding each step as well as needed reference material and helpful
hints guaranteed to make your observing experience as simple and pleasurable as possible.
Your telescope is designed to give you years of fun and rewarding observations. However, there are a few things to consider
before using your telescope that will ensure your safety and protect your equipment.
Warning
Y Never look directly at the sun with the naked eye or with a telescope (unless you have the proper
solar filter). Permanent and irreversible eye damage may result.
Y Never use your telescope to project an image of the sun onto any surface. Internal heat build-up can damage the telescope
and any accessories attached to it.
Y Never use an eyepiece solar filter or a Herschel wedge. Internal heat build-up inside the telescope can cause these devices to
crack or break, allowing unfiltered sunlight to pass through to the eye.
Never leave the telescope unsupervised, either when children are present or adults who may not be familiar with the correct
operating procedures of your telescope
.