Guide :Optics : ETX-125EC (500 x 127mm) Telescope

Trouble shooting the telescope won't turn left and right using the electric controller - the Autostar computer controller. What should i do?

Posted by sram on Aug 30, 2007

Research, Knowledge and Information :


Meade Instruments Corporation - ETX-90EC and Autostar ...


... (3/8's of one turn). Lock the Right Ascension ... Why won't the ETX-90AT slew to an object ... Meade ETX-90EC Astro Telescope #497 Autostar Computer Controller;
Read More At : www.meade.com...

Celestron - Official Site


Celestron Telescopes manufactures telescope ... find the one that's right for you. Find Your Telescope; ... bulky telescope if you aren't willing to set it up and ...
Read More At : www.celestron.com...

Weasner's Meade ETX-90EC Comments


... ($595) with an Autostar Computer Controller ($149; software ... (left/right) for terrestrial ... It helps to use a rubber bottle-top gripper to turn the cover ...
Read More At : www.weasner.com...

Washing Machine Will Not Start - RemoveandReplace.com


A washer that won’t start or turn on means dirty clothes can’t get washed. ... then the washing machine will not start. ... RIGHT – LEFT – RIGHT September 21, ...
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Weasner's Meade DSI Astrophotography Page


Which one is the most suitable for a beginner in astrophotography using an ... bought me won't work with my telescope! ... Autostar Computer Controller ...
Read More At : www.weasner.com...

MEADE AUTOSTAR UPDATING - arksky.org


MEADE AUTOSTAR UPDATING. Using your ... will be required to connect your telescope via a computer cable of some type ... Upgrade Autostar Now" button at the top left; ...
Read More At : arksky.org...

Meade DS2114 4.5" reflector telescope with #494 Autostar and ...


I am purchasing the Meade Polaris DS2114ATS w/ autostar computer controller locates ... makes left right ... ran through some trouble shooting with me ...
Read More At : robert.thegeakes.co.uk...

It Still Works


Tech and Science topics: phones, computers, gadgets, and the Internet, astronomy & earth science, climate & weather, environment & green living and much more.
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Suggested Questions And Answer :


Trouble shooting the telescope won't turn left and right using the electric controller - the Autostar computer controller. What should i do?


My Meade ETX-125 makes a grinding noise when I try to slew to the left and will not move. Any suggestions will be appreciated. Bill
Read More At : ETX-125EC (500 x 127mm) Telescope...

Autostar I recently purchased a used ETX-125EC. There is only one problem. The autostar screen does not show or do anything. The batteries are installed correctly, the controller is plugged into the correct port and the power light turns on on the telescope base. There is even a faint red light from the auto star screen. Does this mean I need a new controller or is there something more dubious at work here?


Double check the cable from the Autostar to the telescope. Sometimes the ends go bad. They can be replaced with regular telephone cables.
Read More At : ETX-125EC (500 x 127mm) Telescope...

ETX-125 Autostar controller not working


My ETX 125 did this to me, here's what happened I had a 497 autostar hooked up to it and it quit working the scope stopped dead and the autostar went dead i hooked another autostar up to it and the same thing happened I took the scope apart and noticed that the wires for the upper motor run through the bolt that tightens the rotational clutch on the base, the clutch handle mechanism in the base sliced through the wiring and shorted out the 12v black wire onto the autostar data yellow wire, this sent 12v back into the autostar and fried it. both autostar circuit boards were destroyed as the short caused the custom programmed microchip to burn and blister. I am in the process of repairing mine and getting a new autostar computer. I would recommend against asking a friend to try thier autostar box on your scope for obvious reasons.
Read More At : ETX-125EC (500 x 127mm) Telescope...

Can't focus my meade etx-125. have turned focusing control more than 80x in both directions. Is there an stop on the focusing system. Originally had the electric focusing system on the scope couldn't focus then either. I have tried both indoors and out doors.


Yup there is a mechanical stop to prevent you from cracking the mirror by retracting or extending it too far.. once you break the pin off it needs to go to the factory for dis-assembly as they have to remove the primary to get to it and realign it my 105 did same thing....word of advise use a cable extender for focus not an electric focuser they fail to tell you that it can over run the built in stops making your scope useless...i may be mistaken but i believe the max turns is 25 or about for end to end focusing adjustment on the 125
Read More At : ETX-125EC (500 x 127mm) Telescope...

Light on telescope on powerup but nothing from autostar.


If Meade does not offer help, there is a 3rd party that does 'supercharging' of ETX models:http://www.weasner.com/etx/techtips/tuneup_service.html
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Power goes out ETX 125


The hand controller cable may be bad. Get a new cable. If this does not work the hand controller may have bad firmware. Attempt to update the hand controller to the latest version of the firmware 43Eg.
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Azimuth motor gearing problem


Sounds like it could be that the worm gear is not meshing Look here for guidelines in the internals
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Power goes out ETX 125


Several possibilities:1. Bad cable from hand controller to the scope. Buy a new one at www.scopestuff.com much better quality and cheap.2. Firmware is corrupted in the hand controller. Update the firmware using the Autostar Update software here:http://www.meade.com/support/auto/Au2ver59.exe3. You have a bad hand controller and will need to buy a new one.Never plug or unplug the hand controller or any other cables while the power is turned on.Good luck--
Read More At : ETX-125EC (500 x 127mm) Telescope...

Computer control and pointing with NorthStar Goto & Autostar


Your reseller is correct. The wire (Meade cable #505) goes from an RS232 serial port on PC to a 4pin RJ plug. This plugs into the 2nd socket on the bottom of an Autostar 497 handset, the other socket being used for the curly lead to the telescope. So it goes PC to Autostar to telescope. A common error is to try plugging the serial wire into an "AUX" ort on the telescope control panel - same connector. Not only does this not work, it can cause a lot of damage. Wired like this you can control the scope from Meade's Autostar Suite (or many other planetarium softwares). You can also update the Autostar software to the latest 2009 version. What else can go wrong? Well, many people want to control from a laptop, and modern ones don't have RS232 serial ports. Then you need a USB-to-serial convertor dongle, which effectively add a serial port to a laptop. But they often give it a very high port number (eg COM17) that the planetarium software does not find. Use Control Panel to reset the USB-serial-port to COM 1, 2, 3 or 4 and all should be well. But it can be a right fiddle!
Read More At : NorthStar Goto 100mm 788840 Maksutov-Cassegrain Compact......

Meade ETX-125EC Telescope Problem


Well, when I got the unit, indeed it would not power up at all. I could see no burning or signs of arcing.I looked online for an internal picture of the drive and fitted the cables back in according to the image.Tadahhhh, one working drive, only works on the 12v though, Batteries wont work although I have measured the voltage and they are all fully charged. Seems the previous owner had removed the looms and put them back incorrectly.
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