Warning - Celestron NexStar 90 MAK Instruction Manual

Congratulations on your purchase of the Celestron NexStar telescope! The NexStar ushers in a whole new
generation of computer automated technology. Simple and friendly to use, the NexStar is up and running after
locating just three bright celestial objects. It's the perfect combination of power and portability. If you are new to
astronomy, you may wish to start off by using the NexStar's built-in Sky Tour feature, which commands the
NexStar to find the most interesting objects in the sky and automatically slews to each one. Or if you are more
experienced, you will appreciate the comprehensive database of over 4,000 objects, including customized lists of
all the best deep-sky objects, planets, bright double stars. No matter at what level you are starting out, the NexStar
will unfold for you and your friends all the wonders of the Universe.
Some of the many standard features of the NexStar include:
Incredible 3°/second slew speed.
Fully enclosed motors and optical encoders for position location.
Computerized hand controller with 4,000 object database.
Storage for programmable user defined objects; and
Many other high performance features!
The NexStar's deluxe features combined with Celestron's legendary optical standards give amateur astronomers
one of 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 NexStar, so you should keep this manual handy until you have
fully mastered your telescope's operation. The NexStar 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 NexStar 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

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.
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.
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.
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