Celestron NexStar 8i manual

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Congratulations on your purchase of the Celestron NexStar! The NexStar i-seriestelescopes are precision scientific instruments that will allow you to enjoy viewing numerous objects in the night sky — planets, nebulae, star clusters, galaxies and more. Equipped with high speed motors and hand control, the NexStar-iallows you to remotely move your telescope to desired objects quickly and accurately. At a touch of a button, you can move your telescope across the sky in a matter of seconds and track objects remotely as the Earth rotates beneath them. The NexStar-iis fully upgradeable and can be equipped with the optional NexStar Hand Control with a database of over 40,000 objects (see the Computerized Hand Control section of this manual) for fully automated operation.

Some of the many standard features of the NexStar include:

Incredible 6°/second (or faster) slew speed.

Fully enclosed motors on both axes.

Integrated hand controller – built into the side of the fork arm.

Many other high performance features!

The NexStar’s deluxe features combine with Celestron’s legendary Schmidt-Cassegrain optical system to give amateur astronomers one of the most versatile and easy to use telescopes available on the market today.

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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Contents Page Hand Control Operation Alignment Procedures Care and Cleaning of the Optics Collimation Page NexStar 8i SE StarPointer Finderscope Eyepiece Diagonal Visual Back Appendix C Longitude Latitude Assembling the NexStar Mounting the Telescope to the TripodHand Control Powering the NexStarStar Diagonal Eyepiece Star Pointer InstallationStar Pointer Finderscope Star Pointer Operation NexStar Computerized Hand Control Hand Control Operation Double StarsAlignment Procedures Auto Two-Star AlignTwo Star Alignment Object Catalog EQ North / EQ South AlignmentNexStar Re-Alignment Selecting an ObjectFinding Planets Tour ModeSlewing to an Object Direction Buttons Setup ProceduresRate Button Page Scope Setup Features MenuUtility Features Helpful Hint NexStar Ready Image Orientation Calculating Magnification FocusingDetermining Field of View General Observing Hints Celestial Coordinate System Motion of the Stars Polar Alignment with optional Wedge Wedge AlignFinding the North Celestial Pole Observing the Moon Observing the PlanetsObserving the Sun Lunar Observing HintsObserving Deep Sky Objects Seeing ConditionsTransparency Sky IlluminationPage Short Exposure Prime Focus Photography Eyepiece Projection FullLong Exposure Prime Focus Photography Planet ISO Moon Mercury Venus Mars Jupiter SaturnPage Terrestrial Photography CCD ImagingMetering Reducing VibrationCare and Cleaning of the Optics CollimationCollimated telescope Should appear Symmetrical with Page Adapter, Car Battery #18769 Page Page Appendix a Technical Specifications Page Appendix B Glossary of Terms Trillion km 5.87 X 1 trillion mi Right Ascension RA Appendix C Longitudes Latitudes Georgia Minnesota Rhode Island Canada Appendix D RS-232 Connection Communication ProtocolAppendix E Maps of Time Zones Page Page Page Page Page Page Page Celestron TWO Year Warranty