Orion SKYQUEST XT12 User Manual

IN 227 Rev. B 03/05Providing Exceptional Consumer Optical Products Since 1975Customer Support (800) 676-1343E-mail: [email protected] Off

101.25" eyepiece adapter. The other eyepiece can be placed in the eyepiece rack until it is needed.The basic assembly of your SkyQuest IntelliSco

Preparing the Telescope for CollimatingOnce you get the hang of collimating, you will be able to do it quickly even in the dark.For now, it is best

12Aligning the Primary MirrorThe final adjustment is made to the primary mirror. It will need adjustment if, as in Figure 21d, the secondary mirror is

134. Using Your TelescopeOne of the great benefits of the SkyQuest XT IntelliScope Dobsonian is its ability to point to more than 14,000 celes-tial o

14If you have trouble focusing, rotate the focusing knob so the drawtube is in as far as it will go. Now look through the eyepiece while slowly rotati

15Aiming/Pointing the TelescopeWith the finder scope aligned, the telescope can be quickly and accurately pointed at anything you wish to observe. The

the retaining and tensioning knobs until they are free of the base and tube (make certain the spacer does not fall off the retaining knob). Then, usin

17your eyes become dark-adapted, more stars will glimmer into view and you will be able to see fainter details in objects you view in your telescope.

18the sky, excluding the Sun and the Moon. It is so bright that sometimes it is visible to the naked eye during full daylight! Ironically, Venus appea

19the ID button. You can even add up to 99 objects of your own choosing to the IntelliScope controller’s database.The backlit, two-line liquid crystal

2Figure 1. The SkyQuest XT12 IntelliScopeSecondary mirror holder with 4-vane spider (not visible)Finder scopeFinder scope bracketEyepieceFocuserOptica

208. SpecificationsPrimary mirror: 305mm diameter, Pyrex, parabolic, center- markedFocal length: 1500mmFocal ratio: f/4.9Focuser: Rack-and-pinion. acc

3Congratulations on your purchase of an Orion SkyQuest XT12 IntelliScope Dobsonian. It is a high-performance astronomical instrument designed to pr

41 Hex key (size 4mm)3 Plastic feet3 Feet attachment wood screws (length 1")5 Encoder board mounting wood screws1 Brass bushing1

5Assembling the SkyQuest XT12 IntelliScope mirror cell to the tube can be a bit tricky. This is because the large diameter and thin aluminum of the tu

1. With a Phillips screwdriver, screw the plastic feet into the underside of the ground baseplate (A) using the self-tap-ping wood screws provided. I

7There are some predrilled holes on the right side panel (oppo-site the panel that holds the encoder connector board). These holes will be used to mou

8Placing the Optical Tube on the Dobsonian BaseLift the optical tube and gently place it into the Dobsonian base so that the altitude bearings on eith

9now be known as the retaining knob. Push the shaft of the retaining knob through the hole in the side panel opposite the one the retaining knob is in