Orion SKYQUEST XT8 User Manual

IN 226 Rev. H 04/09INSTRUCTION MANUALOrion® SkyQuest™ IntelliScope® XT6, XT8, XT10#27182, #27183, #27184 Customer Support (800)-676-1343E-mail: su

10the thumbscrews, the spring in the bracket’s tensioner moves in and out to keep the finder scope secure in the bracket. Note: The image in and the m

All three SkyQuest IntelliScope Dobsonian models have a focal length of 1200mm. So, the magnification with the sup-plied 25mm eyepiece is:1200 mm

12the base with one hand while supporting the telescope tube vertically with the other (Figure 17). Now, lift the telescope by the handle. Once the te

13The Collimation Cap and Mirror Center Mark Your SkyQuest telescope comes with a quick collimation cap. This is a simple cap that fits on the focuser

14When the secondary mirror is centered in the focuser draw-tube, rotate the secondary mirror holder until the reflection of the primary mirror is as

15Note About the Collimatable 2" Crayford Focuser (XT8, XT10 only)The 2" focuser of the SkyQuest XT8 and XT10 can be col-limated using thr

SkyQuest XT8 and XT10 models are designed to accept an optional Orion Cooling Accelerator Fan (#7814). When attached to the rear cell of the tel

17disk. A steady atmosphere (good seeing) is necessary for a good view. Look closely and you should see the Cassini divi-sion, a thin, dark gap in the

18With the user-friendly IntelliScope controller, there are many ways to locate an object. If you know its catalog num-ber (NGC or Messier numbe

198. SpecificationsSkyQuest XT6 IntelliScope Primary mirror:150mm diameter, parabolic, center-markedFocal length: 1200mmFocal ratio: f/8.0Focuser: Rac

2Figure 1. The SkyQuest XT8 IntelliScopeSecondary mirror holder with 4-vane spider (not visible)Finder scopeFinder scope bracketEyepieceFocuserOptica

20One-Year Limited WarrantyThis Orion SkyQuest IntelliScope Dobsonian Reflecting Telescope is warranted against defects in materials or

3Congratulations on your purchase of an Orion SkyQuest XT IntelliScope Dobsonian. It is a high-perfor-mance astronomical instrument designed to provid

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

5hole, and the large hole lines up with the central hole in the baseplate. Thread an encoder board mounting screw into the predrilled starter hole wit

Installing the Eyepiece RackThe aluminum eyepiece rack is a standard accessory on SkyQuest IntelliScope Dobsonians. It holds three 1.25"

7SkyQuest Intelliscope Dobsonians employ a simple yet effec-tive remedy for the friction problem that obviates the need for such cumbersome countermea

8Inserting an EyepieceThe final step in the assembly process is to insert an eye-piece into the telescope’s focuser. First, take the cover cap off the

9For azimuth motion, the top baseplate moves on three Teflon bearing pads embedded in the ground baseplate. To move the telescope, simply take hold