iOptron ZEQ25GT 用户手册

 
 

25

Use this operation to upgrade 8408 hand controller, R.A. and DEC motor controller firmware. Please 

refer to iOptron online documents for ZEQ25 firmware upgrade details. The password is 9999. 

 

This function is used for aligning the telescope. The hand controller provides “Polar Align”, which 

uses a set of 2 bright stars for polar alignment. This provides a viable polar alignment approach for those 
who can’t see the polar star or has a mount does not equip an iOptron AccuAlign

TM

 polar scope. The system 

also provides three alignment methods: “SolarSys Align”, “One Star Align”, and “Multi-Star Align”. The 
mount has to be at Zero Position before performing any star alignment. 

Press the MENU button, then select “Align” and “Polar Align”. The HC will display the azimuth and 

altitude position of several bright stars near meridian. Select one that is visible with high altitude as 
Alignment Star A. Follow the HC instruction to move the Star A to the center of the eyepiece with the 
combination of Latitude Adjustment Knob and “◄” or “►” button. Press ENTER to confirm. Next, select a 
bright star that is close to the horizon as the Alignment Star B. Center it using the Azimuth Adjustment Knob 
and “◄” or “►” button (The “

▲”

▼”

 buttons are not used here). Press ENTER to confirm.  

The telescope will now slew back to Star A to repeat above steps. The iteration can be stopped 

when it is determined that the alignment error is at the minimum. Press BACK button to exit alignment 
procedure.  

NOTE: It is highly recommended to use an eyepiece with crossed-hair line for accurate centering.  

NOTE: The movement of the alignment star in your eyepiece may not be perpendicular but crossed, 

depends on its location in the sky. 

Press MENU button and select “Align”. Select “SolarSys Align” and press ENTER for available 

alignment object.  

Press MENU button and select “Align”. Select “One Star Align” and press ENTER. A list of 

alignment stars that are above the horizon is computed based on your local time and location. With the 
mount at the “Zero Position,” use ▲ and ▼ buttons to select a star and press ENTER. Center the target in 
your eyepiece using arrow key. Press ENTER when finished. If your mount is well set up and polar aligned, 
one star alignment should be sufficient for good GOTO accuracy. To increase the accuracy you may 
choose to do multi star alignment. 

With iOptron’s multi-star alignment, you can choose two, three, or as many stars as you want to 

reduce the mount alignment offset.  

Press MENU button and select “Align”. Select “Multi-Star Align” in the align menu. A list of 

alignment stars that are above the horizon is computed based on your local time and location. With the 
mount is at the “Zero Position,” use ▲ and ▼ buttons to select first alignment star and press ENTER. 
Center the target in your eyepiece using arrow key. Press ENTER when finished. The hand controller will 
prompt you to choose the second star. If the star you choose is too close to the first one, the system will let 
you choose another one. When you are aligned with the second star, the two star alignment is finished. You 
can reject the suggested star if it is blocked by a tree or other obstruction.