iOptron 3130 User Manual

 

 

Figure 13. Azimuth adjustment 

 

Figure 14. Latitude Adjustment 

 

 

If the polar scope does not focus on the distant object, take the polar scope out of the mount 
housing. Point the polar scope to a far distant object. Adjust the Objective Lens by turning the tube 
to get a clear image. Tune the lock ring to secure it.  
Replace the Polar Scope back to the mount and tighten it. Adjust the Eyepiece to get a clear 
picture of the reticle. 

 

 

If you are suspecting that the polar scope may be misaligned to the mount R.A. axis, you may 
check it by putting a star in the center of the polar scope reticle cross hairs and rotating mount’s 
R.A. axis. If the star stays in the center of cross hairs, the polar scope is aligned to the mount’s R.A. 
axis. 
 
In the event the polar scope optical axis needs to be adjusted, you can do this procedure at night 
while pointing at Polaris. However, it is probably easier to do it during the daytime using a distant 
point, such as a flag pole or top of a building a couple of hundreds away, as your target. Please 
remove the telescope, the counterweights and counterweight shaft from the mount. Aim the mount 
to the object. Use the Latitude Adjustment Screw and Azimuth Adjustment Knob to center the 
object. 
 

Latitude 
Adj. Screw

Azi. adj. knob (X2)

Azimuth lock 

Latitude 
clutch 

Latitude dial

Eyepiece

Reticle Adj. 
Screws 

Locking Ring

Objective Lens