Orion 9791 instruction manual Installing the Finder Scope and Eyepieces

Models: 9791

1 34
Download 34 pages 34.77 Kb
Page 18
Image 18

Encoder retaining knob

Aluminum shaft of altitude encoder assembly

 

Altitude side

 

bearing

Altitude

Right panel

retaining

 

knob

 

spacer

 

Figure 30. The shaft of the other knob (the retaining knob) goes through the hollow aluminum shaft of the altitude encoder and threads into the other altitude side bearing on the tube. Make sure to put the white nylon spacer on the shaft before threading it in.

against the CorrecTension pads on the interior surface of the left panel.

3.On the other (retaining) knob, slide the altitude retain- ing knob spacer onto the threaded shaft. Then push the shaft through the altitude encoder’s aluminum shaft (now protruding from the right side panel) and into the optical tube’s other altitude bearing (Figure 30). You can move the altitude encoder up and down a bit with the knob in order to have the knob’s shaft line up with the threaded hole in the tube’s altitude bearing. Make sure this knob is always fully tightened, or else the IntelliScope’s altitude encoder will not work properly.

Installing the Finder Scope and Eyepieces

These accessories can be found in the optical tube assembly box.

1.To install the finder scope into its bracket, first remove the O-ring from the bracket and place it over the body of the

Tensioner

Black nylon thumb screws

Figure 31. Pull back on the tensioner and slide the finder scope into its bracket until the O-ring is seated in the recess in the front of the bracket.

 

Thumb screw

 

 

Dovetail

 

Foot of

base

 

 

 

finder

 

 

 

 

 

scope

 

 

 

 

bracket

 

 

 

 

Figure 32. The foot of the finder scope bracket goes into the dovetail base and is secured with the thumb screw.

finder scope until it seats into the groove in the middle of the finder. Unthread the black nylon alignment screws on the bracket until the screw ends are flush with the inside diameter of the bracket. Slide the eyepiece end (narrow

18

Page 18
Image 18
Orion 9791 instruction manual Installing the Finder Scope and Eyepieces