Question about Orion Atlas Mount GoTo Upgrade Kit Telescope

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RA will not track on Orion Atlas mount

I added the "go-to" motors and electronic board upgrade to my older non-go-to Atlas mount. Now,  RA and Dec work fine for slewing to objects at different speeds but then the RA does not kick in and  track an object. It remains stationary. I suspect the clutch on the drive gear is not tight enough but why does it still work when I slew?  And, how do I get inside this mount to fix it?

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Are you sure it's not actually working (tracking)-- can you hear the motor running?

I would contact Orion and make sure you have a manual for the hand-controller-- it may have a setting that turns tracking on or off.
http://www.telescope.com/control/main/

Posted on Dec 28, 2008

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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

Manual for TwinStar 1000mm focal length telescope and equatorial mount


Equatorial mounts need to be polar aligned to work correctly. Once the scope is polar aligned (see manual or look online for polar alignment instructions), turn on the RA motor. Loosen your RA and DEC locks and find a object you want to view, The motor should keep the object in view for a while (depends on how good the motor tracks and how good your polar alignment is.) Spending 10 minutes polar alignment on my C8 keeps the object in view for about an hour without adjustment.

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1 Answer

Electronics - Atas EQ-G - connection is lost when guiding program begins calibration. Tracking and mount control lock up requiring restart of mount. Thanks


Have you upgraded the motor control firmware and the hand controller firmware to the latest version? If not see this web site which contains instructions for updating the firmware.

http://www.telescope.com/control/accessories/mounts-and-tripods/orion-atlas-eq-g-computerized-goto-telescope-mount

This could also be caused by a USB-Serial adapter cable. Try another brand. The one sold by www.scopestuff.com works --- along with a Keyspan brand Serial-USB adapter.

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Call Orion customer service.
http://www.telescope.com/control/main/

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An Orion XT 8 DOB cannot be polar aligned??? The mount is ALT AZ ---

You would need an equatorial platform to polar align. There are no setting circles on a stock XT??

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Did you call Orion customer service ??? I just do not believe they would discontinue this since they still sell the non goto mount, and the goto mount.

It is still listed here---

http://www.telescope-service.com/OrionUSA/mounts/mounts.html

Dec 28, 2008 | Orion Atlas Mount GoTo Upgrade Kit...

1 Answer

Where can I get the Atlas Mount GoTo Upgrade Kit ??


From Orion Telescope--

http://www.telescope.com/control/main

and others like -- Oceanside
http://www.optcorp.com/

Dec 26, 2008 | Orion Atlas Mount GoTo Upgrade Kit...

1 Answer

Meade LX200 10" - RA Gears slip when mounted on wedge (Milburn)


The problem is the addition of the 80mm telescope to the assembly. The telescope is now out of balance, and places extra weight off-center as the position chages. Too great an off-balance will cause the main gears to 'jump' the worm teeth. The solution is to restore balance by adding counter weights as needed. Loosten the axis locks (carefully) and see which direction it wants to move. To balance my LX, I used a small bag with lead buckshot to determine how much weight was needed and where to achieve balance. Then I added fixed weights to the mount. Once this is done, the scope should track correctly.scopestuff.com has balance kits at reasonable prices.

Feb 03, 2008 | Meade LX200GPS Telescope

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