Question about Celestron NexStar 80GT (189 x 80mm) Telescope

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No azimuth motion

My nexstar 80 GT does not move in azimuth when I can hear the motor turning

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Re: no azimuth motion

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Posted on Sep 17, 2011

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Hi I have a meade ETX 105 pe I can get the scope to move Alt motion with the controller but it wont move in the Azimuth position with the controller. Might I be doing something wrong

This can be caused by 4 things-

A stuck button on the hand controller.

A bad hand controller cable

A burned out circuit board inside

A burned out Azimuth motor

(Long shot) bad firmware in the hand controller. DO a Reset and reload the firmware.

Try to borrow another hand controller and buy a new cable. If these two do not fix it then it's a mechanical problem or a circuit board problem inside the scope.

Meade can repair this but you will need to send them the scope:

Mar 26, 2011 | Meade ETX-105AT (420 x 105mm) Telescope

1 Answer

The Celestron Nexstar 4SE makes a weird cracking noise when you press the left or right arrows on the controller. I tried taking it off of the tripod, and it still will not rotate left or right, even if...

Is the AZimuth clutch locked down? Then either a gear is broken inside or the worm gear inside has slipped and is not engaing. You can return these to Celestron for repair, here:

Dec 26, 2010 | Celestron NexStar 4 SE Telescope

1 Answer

Hi, Bought a used telescope with a GT mount. The polar adjustment will not go below 46 degrees without binding. The binding screw only turns 1/4 turn in each direction and appears to be binding the...

This scope does NOT need to be polar aligned --

Here is the manual:

This is an ALT AZ goto scope. Read the manual above. You use the hand controller to move the scope in Altitude and Azimuth(left-right).

You must align it on 2 stars in order for it to has successful gotos.

Read the manual above.

Aug 21, 2010 | Celestron NexStar 114GT (269 x 114mm)...

1 Answer

Celestron Nextar 8 doesn't track

You need to contact Celestron or a Celestron dealer:

Oct 20, 2009 | Celestron NexStar 8i (600 x 203mm)...

1 Answer

The azimuth adjustment keys don't work

Send it back along with the hand controller describing the problem. Could be several things including a bad hand controller. If there is a local astronomy shop nearby take the scope there and ask to try one of the hand controllers in the shop and test it. If it now works you just need to buy another hand controller.

Otherwise send it in for repair

Jul 01, 2009 | Celestron NexStar 5 SE (300 x 44.45mm)...

1 Answer

Azimuth Drive failure on Nexstar 114

Hi Dan, before you ship it off somewhere, you may want to try and change out the hand controller with another one that someone has and see if the problem moves.

Nov 25, 2008 | Celestron NexStar 114GT (269 x 114mm)...

1 Answer

ETX125 PE new model. Elevation has totally stopped.

Could be that the DEC motor driver has died. That could be verified by swapping the connections between the RA and DEC. If the DEC now moves, then that is the problem. If not, then the DEC motor is bad.

Nov 17, 2008 | Meade ETX Premier Edition: ETX105 PE...

1 Answer

Azimuth motor gearing problem

Sounds like it could be that the worm gear is not meshing
Look here for guidelines in the internals

Oct 15, 2008 | Meade ETX-125EC (500 x 127mm) Telescope

2 Answers

Azimuth motor gearing problem

I also purchased a used Meade ETX-70, only to find it had the same problem with the rotation axis motor running but no movement. After removing the bottom cover, I found the motor w/worm gear would not contact the main rotation gear. I solved the problem but purchasing a small 3/8x3/4x.032 spring that I had to custom fit to hold the motor w/worm gear against the rotation gear. Take caution not to have the spring apply to much pressure or it will cause to much drag.
To gain access, remove the bottom round cover(it will just pop off).
Then use a small .05 allen wrench to remove the set screw in the horizonal chrome lock. The chrome lock fits over a 1/2" bolt. By removing this bolt you will remove the washer/bearing assembly. After removing this, you will see a nylon nut, use a 11/16 socket to remove. Becareful, it is a fine thread and you don't want to cross thread it!
After you remove this, you will be able to remove the bottom housing, which will expose the motor and gear. You should be able to see what I am referring and where to place the spring.
If you can make it this far, then you should be able to install the spring. I used a little small dab of Gorilla glue to hold it in place, since the spring will have enough constant tension to keep it from moving.
I'm not sure if this was a design flaw, but I got no help from the Techs at Meade, only that they would upgrade to a ETX-80 for $149.99 plus shipping.
Hope this helps.......

Aug 12, 2008 | Meade ETX-70 (240 x 70mm) Telescope

1 Answer

Celestron nexstar 11" gps scope

Be sure that the Azimuth Axis is Lock, you migth want to try and move the telescope in the Azimuth to make sure it is it is locked. Be carful not to force it. I have seen on some post where the locking part of the Azimuth somtimes breaks. and the Azimuth Axis will just spin freely Locked down or not.

May 19, 2008 | Celestron NexStar 11 GPS (660 x 279mm)...

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