Orion SKYQUEST XX12 User Manual

INSTRUCTION MANUALIN 339 Rev. A 11/08Providing Exceptional Consumer Optical Products Since 1975Customer Support (800) 676-1343E-mail: support@telesco

1019. Connect one end of the azimuth encoder cable (the shorter of the two flat cables in the IntelliScope kit) to the encoder jack in the top

11vertical stop screw. Thread the vertical stop knob into the threaded insert on the inside of the front brace (B) until tight (Figure 14). The positi

122. Next, assemble the rear end ring to the mirror cell. Find a clean, flat surface, and turn the mirror cell over so that the mirror is facing down

13lower optical tube section (Figure 21). This is done by sim-ply threading the knobs into the holes in the ring. Do not completely tighten these knob

14to the truss connectors (see Figure 23). This should rarely need to be done.The telescope is now assembled and ready to be placed into the Dobsonia

15IntelliScope port (Figure 25). Thread the knob into the optical tube’s altitude bearing until the knob pulls the alti-tude bearing against the Co

162" adapter and secure it with the two thumb screws loos-ened previously (Figure 29). The other eyepiece and 1.25" adapter can be placed in

17more sophisticated alignment devices, such as the Orion LaserMate Laser Collimator.Preparing the Telescope for CollimatingOnce you get the ha

18The secondary mirror should now be centered in the focuser drawtube. Now we will shift our attention to the reflections within the secondary mirror

19rectly collimated, the expanding disk should be a perfect circle (Figure 37). If the image is unsymmetrical, the telescope is out of collimation. Th

2Figure 1. The SkyQuest XX12 IntelliScope Truss Tube Dobsonian.Finder scopeEyepieceFocuserAltitude tensioning (CorrecTension) knobIntelliScope Object

20Focusing the TelescopeThe XX12 comes standard with a 2" dual-speed Crayford fo-cuser. The large 2" format focuser allows use of 2" or

21ing the alignment thumb screws, you change the line of sight of the finder scope. Continue making adjustments to the align-ment thumb screws until t

22bearings on the optical tube and increase the friction. With CorrecTension, the added weight of front-end loads will not adversely affect the balanc

23in which it resides, its right ascension and declination coordi-nates, the object type, magnitude, angular size, as well as a brief description in s

24Cooling the TelescopeAll optical instruments need time to reach thermal equilibrium with the outdoor air, which is essential for peak performance. I

25permanent eye damage could result. Also, be sure to cover the finder scope, or better yet, remove it altogether.C. The PlanetsThe planets do

26then remove any excess fluid with a fresh lens tissue. Oily fin-gerprints and smudges may be removed using this method. Use caution; rubbing too har

27MountDobsonian base: CorrecTension altitude tensioning, side brace supports, carry handleAzimuth bearing material: Virgin Teflon on Ebony Star la

28One-Year Limited WarrantyThis Orion SkyQuest XX12 IntelliScope Truss Tube Dobsonian is warranted against defects in materials or workmanship for a p

3Congratulations on your purchase of an Orion® SkyQuest™ XX12 IntelliScope® Truss Tube Dobsonian (XX12). It’s a deep sky observer’s dream telescope, o

4Parts ListBox #1: Optical Tube Assembly and Accessories (refer to Figure 2)Qty. Description1 Lower tube section1 Upper tube section2 Dust cover

5Figure 2. The parts in the box containing the optical tube and accessories.Upper tube sectionDust cover (2x)Truss pole assemblies (4x)Lower tube sec

6Figure 4. The parts in the box containing the Dobsonian base.Left panelRight panelFront braceTop baseplateGround baseplateSide braces (2x)Metal inser

72. AssemblyNow that you have unpacked the boxes and familiarized yourself with all the parts in front of you, it’s time to begin assembl

87. Insert the modular jack on the azimuth encoder board (E) into the square-shaped hole in the top baseplate (D) and align the encoder board so t

9board and into the pre-drilled pilot holes in the left panel until tight (Figure 10).16. The altitude encoder assembly and its mounting hard-ware