Question about Celestron StarHopper 10 Telescope

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Where to find the gearbox for the 1994 celetron dec motor gearbox

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Starhopper does not have a gearbox - strictly manual.

Posted on Jul 10, 2008

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Dec auo running as power on?


I had this problem after a repair and was told to unconnect all boards and then reconnect them. Amazingly it worked and is worth a try. If this does not cure your "runaway dec" , call Tony Castanza at the Astronomy Shoppe in NH. He fixed my LX200 and may have some suggestions. If your Dec motor resistors need tuning I'm guessing he can do it.

Apr 06, 2014 | Meade Telescopes

1 Answer

I have an older meade LX2000 EMC 10


The main problems encountered with the mechanics of the telescope centre around the mechanical swarf, grease compound, the liberal use of grease and the quality of machining of the main DEC and RA gears.
1. Remove the motors from the telescope. Be careful when removing either motor as there is a compression spring between the motor mounting frame and the worm shaft assembly.
The RA motor is located under the telescope body, removing the 4 screws and 2 Allen bolts will allow the bottom cover to be removed, thereby allowing access the the 2 Allen bolts holding the motor in place. Unplug the motor from the main PCB before removal.
The DEC motor is in the the fork arm containing the clutch and fine DEC adjustment control. (Never to be used with power applied to the scope). Remove the 3 small Allen screws holding the plastic cover plate in place and the DEC clutch knob to allow access to the motor. Remove the RJ45 connector located inside the telescope fork arm. Then remove the motor by unscrewing the 2 Allen bolts holding the motor in place.
2. Remove all grease from the motor worms, especially around the RA motor's magnetic pulse detector and the permanent magnet built into the worm shaft.
3. Remove all grease from the main DEC and RA gears, making sure to clean into the gear teeth.
4. Lightly re-grease with a Molybdenum Disulphide based grease (Castrol MS3 is great for this application if you can get it)
5. Assemble in reverse order. But before doing so, carry out the electrical adjustment above then, (a) relocate the the RA and DEC control PCB's in the vertical plane thereby gaining access to their respective backlash Allen screws. Adjust for 20thou max clearance when in final position. Note:- the DEC adjustment screw has to be replaced for a longer unit complete with a thin bolthead as this adjustment has to be carried out with a spanner....there is no room for an Allen key adjustment here.
6. A drop of Loctite must be applied after adjustment.
7. The final part of the process is to run in the gearing. Apply 12 volts to the motor wires, either at their respective plugs or to the motor direct. Allow to run for 2 to 3 hours in each direction by reversing the battery polarity to bed the teeth engagement. Remember to release the clutches.

Dec 28, 2011 | Telescopes

1 Answer

Hi, I hadn't used my 9.25"


There is is "pin" inside the power connector on the scope -- using a sharp knife-- try spreading the pin apart-- then try the power pack again.

May 02, 2011 | Celestron Advanced C9 S-GT XLT (555 x...

1 Answer

Meade lx-90 dec printed circuit board bad. where


Since you already disassembled the scope-- you can send the board to Ron Sampson and he should be able to repair it. He fixes main boards and hand controllers (including the screen and keyboard on the hand controller!)

If you post a message on the Yahoo LX90 group looking for Ron Sampson he will answer you. You can then email or phone him for instruction on how to send him the board.

ARE YOU SURE it's the board? It could be a bad keyboard or a bad cable on the hand controller. You should get another hand controller and cable and test it before you send it off. Can you borrow a hand controller and cable from anyone.... or from a local scope retailer?

Jan 28, 2010 | Meade 8 Inch LX90 LNT Schmidt Cassegrain -...

1 Answer

Bolt holding dec drive motor on 16 loosens.


You have a LARGE Meade telescope. This should be an easy fix if you can disassemble the fork arm and get inside.

First I would contact Meade customer service to see if they have a manual that shows disassemble instructions. If not I would join the Yahoo LX200 forum and look for help there with an owner of the 16 inch model.

http://www.meade.com/support/index.html

Just search in Yahoo Groups for the LX200 forum.

On smaller scopes the DEC motor is held on by two spring loaded bolts, probably one has become loose?

Nov 04, 2009 | Meade LX200GPS Telescope

1 Answer

Replace connector on wire from DEC drive Motor on a LXD55 telesco


If you will post this question on the LX forum on:

www.cloudynights.com someone will know the proper sequence and color to reattach.

Jun 22, 2009 | Meade LXD55 Telescope

1 Answer

Dec fix kit for Meade LX50. Need new gears for the Dec motor. There was an aftermarket fix for this, but so far I have been unable to locate.


Dr. Clay Sherrod performs telescope upgrades, he can probably help.
Try the following links: http://www.arksky.org/supercharge.htm

Here is one person's review: http://www.cloudynights.com/item.php?item_id=1361



May 05, 2009 | Meade LX50 (8105003) (500 x 203mm)...

1 Answer

LX90 Dec pointing out by 4 degrees over run


Go onto www.cloudynights.com and post this in the LX member forum-- and or go on YAHOO groups and post this in the LX90 forum--

Are you absolutely sure that your TIME and DATE and DAYLIGHT SAVINGS (yes-no) are correct.

On my LX90 the first alignment star is always NOT in the eyepiece but everything is OK once I center both alignment stars.

Feb 02, 2009 | Meade 8" LX90 LNT Schmidt Cassegrain...

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

Meadelx200 declination movement


I'm going to assume that you know you need to tighten the DEC clutch knob, and that this was already done.

There is an internal belt that connects the drive motor to the worm gear that engages the DEC assembly. Sounds like the belt has either broken or slipped off the pulleys.

The belt is model and size specific, so you'll need to contact Meade for a replacement.

You should eyeball it to make sure that's what it is before ordering anything.

Sep 06, 2008 | Telescopes

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