Orion XT12 instruction manual One-Year Limited Warranty, Specifications

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8. Specifications

Primary mirror: 305mm diameter, Pyrex, parabolic, center- marked

Focal length: 1500mm

Focal ratio: f/4.9

Focuser: Rack-and-pinion. accepts 2" and 1.25" eyepieces

Altitude bearing diameter: 5.75"

Optical tube material: Rolled steel

Azimuth pad material: Teflon

Altitude bearing material: Ultra-high molecular weight (UHMW) polyethylene

Eyepieces: 25mm & 10mm Sirius Plössl, multi-coated, 1.25" barrel diameter

Eyepiece magnifications: 60x and 150x

Finder scope: 9x power, 50mm aperture, achromat, crosshairs, 5° field of view

Eyepiece rack: Holds three 1.25" eyepieces and one 2" eyepiece

Mirror coatings: Aluminum with SiO2 overcoat

Minor axis of secondary mirror: 70mm

Optical tube weight: 50 lbs.

Base weight: 33 lbs.

Tube length: 58"

Tube outer diameter: 14"

IntelliScope Computerized Object Locator: Optional

One-Year Limited Warranty

This Orion SkyQuest XT12 IntelliScope Dobsonian Reflecting Telescope is warranted against defects in materials or workmanship for a period of one year from the date of purchase. This warranty is for the benefit of the original retail purchaser only. During this warranty period Orion Telescopes & Binoculars will repair or replace, at Orion’s option, any warranted instru- ment that proves to be defective, provided it is returned postage paid to: Orion Warranty Repair, 89 Hangar Way, Watsonville, CA 95076. If the product is not registered, proof of purchase (such as a copy of the original invoice) is required.

This warranty does not apply if, in Orion’s judgment, the instrument has been abused, mishandled, or modified, nor does it apply to normal wear and tear. This warranty gives you specific legal rights, and you may also have other rights, which vary from state to state. For further warranty service information, contact: Customer Service Department, Orion Telescopes & Binoculars, P. O. Box 1815, Santa Cruz, CA 95061; (800) 676-1343.

Orion Telescopes & Binoculars

Post Office Box 1815, Santa Cruz, CA 95061

Customer Support Help Line (800) 676-1343 • Day or Evening

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Contents Orion SkyQuest XT12 IntelliScope #9988Navigation knob Unpacking Table of ContentsParts List Box #3 Primary Mirror and Cell Qty Description AssemblyAssembly of the Optical Tube Assembly of the Dobsonian Base KL M D Installing the Vertical Stop Installing the Eyepiece RackInstalling the CorrecTension Friction Optimization System Placing the Optical Tube on the Dobsonian BaseInstalling the Finder Scope Inserting an EyepieceAligning Collimating the Optical System Collimation Cap and Mirror Center MarkPreparing the Telescope for Collimating Aligning the Secondary MirrorStar-Testing the Telescope Aligning the Primary MirrorUsing Your Telescope Setting the Altitude Tension LevelFocusing the Telescope Altitude and Azimuth MotionAligning the Finder Scope Focusing the Finder ScopeViewing with Eyeglasses Aiming/Pointing the Telescope Magnification1500 mm = 25 mm 1500 mm = 10 mmAstronomical Observing Selecting an Observing SiteSeeing and Transparency Cooling the TelescopeEyepiece Selection Astronomical ObjectsMoon SunDeep-Sky Objects Optional IntelliScope Computerized Object LocatorStars Cleaning Mirrors Care and MaintenanceCleaning Eyepiece Lenses One-Year Limited Warranty Specifications