Orion SKYQUEST XT12 - Manual (Page 9)

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now 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 (Figure 18). Thread the
knob into the altitude bearing as far as it will go. There will
be a gap of about 1/2" between the side panel and the
altitude bearing; this is where the altitude encoder of the
IntelliScope object locator will go.
The CorrecTension system is now installed. If you wish to
remove the optical tube from the base, you will first need to
unthread and remove both the knobs.
installing the Finder Scope
SkyQuest IntelliScope Dobsonians come with a high-qual-
ity, large-aperture 9x50 right-angle correct-image achromatic
crosshair finder scope (Figure 19a) as standard equipment.
This greatly aids in finding objects to view in the night sky.
The finder scope arrives pre-installed in its bracket but must
be placed into the dovetail holder on the telescope tube. Insert
the base of the finder scope bracket into the dovetail holder
located adjacent to the telescope's focuser (Figure 19b). Lock
the bracket into position by tightening the knurled thumbscrew
on the dovetail holder.
inserting an Eyepiece
The final step in the assembly process is to insert an eye-
piece into the telescope’s focuser. First, take the cover cap off
the focuser drawtube.
Loosen the thumbscrew on the 1.25" eyepiece adapter
(Figure 20). Do not loosen the two thumbscrews on the 2"
eyepiece adapter. Insert the supplied 25mm Sirius Plössl eye-
piece, and secure it by retightening the thumbscrew on the
1.25" eyepiece adapter. The other eyepiece can be placed in
the eyepiece rack until it is needed.
The basic assembly of your SkyQuest IntelliScope Dobsonian
is now complete. It should appear as shown in Figure 1. The
dust cap on the front of the telescope tube should always
remain in place when the telescope is not in use. It is also
a good idea to store eyepieces in an eyepiece case and to
replace the cover caps on the focuser and finder scope when
the telescope is idle.
Figure 18. The retaining knob with the nylon spacer is installed
on the side of the base that does not have the IntelliScope port.
Figure 19a. The 9x50 finder scope and bracket.
Tensioner
Eyepiece
Nylon alignment
thumbscrew (2)
Focus lock ring
Finder scope
Finder scope bracket
Figure 19b. Installing the finder scope into its dovetail holder.
Finder scope bracket
Dovetail holder
Knurled
thumbscrew
Figure 20. The 2" Crayford focuser of the SkyQuest IntelliScope
XT12.
Focus knobs
2" eyepiece adapter
1.25" eyepiece adapter
Focus lock
thumbscrew
Focusing tension
adjustment set screw