Question about Meade ETX-125AT (500 x 138mm) Telescope

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I have a Meade ETX 125 with the standard handheld controller ( no Autostar). On startup I am unable to activate the siderial movement, they system default is always to remain static and I cannot change the mode, no matter what I do with the Mode and Speed buttons. I can however set the different slew rates with the speed button and the four arrow keys are also working normally. AM I likely to need a new controller or is the problem more likely inside the deive controller?

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You really CANNOT see it tracking -- the movement is very slow. So visually it looks like it is not moving.

If the arrow keys work all is OK.

Posted on Apr 11, 2011

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If the firmware in your Autostar crashes and you cannot access the "DOWNLOAD" menu item on your handbox, you can use the "SAFE LOADER" feature of your new Autostar software (version release 1.1G and above). To get into the safe loader, follow these simple steps: 1. Make sure the Autostar and ETX are turned off.
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Dead on arrival!

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Here is their customer service web site:
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1 Answer

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The ETX125 is notorious for bad motor control. Weasner's Mighty ETX web site has links to repair centers that are more reasonable than Meade. They also have a QA section to assist with diagnostics.

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Need instruction manual for 1996 or 1997 etx 90 basic model


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If your scope has the motor drives and a control panel into which a controller could be plugged, then you just need to buy an Autostar 497 - always available on eBay for about £85. However, there are older models of the ETX which only have one motor or as a spotting scope for terrrestrial use with no motors - Autostar cannot be connected to these.

Look at the pictures of scopes on eBay which come with Autostar - if your looks like these, Autostar will fit. Else you are out of luck!

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Here is the manual-- read it cover to cover--
http://www.meade.com/manuals/TelescopeManuals/ETXtelescopes/ETX-90%20w-autostar%20man.pdf

1. Take off the lens cap

2. Put your lowest magnification eyepiece into the telescope on the TOP eyepiece port-- there is a lever on the side which rotates the diagonal mirror between the top and rear ports --- can you see light through the telescope? If not turn the lever.

3. During the day practice focusing on a distant object at least 100 yards away-- the image will be upside down -- this is not a problem-- no UP or Down in space.!

4. The lowest magnification eyepiece is the one with the LARGEST number on it.

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1 Answer

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use the postal code entry to change your location.
menu-->select item-->setup-->site-->add-->select option 1 for postal code-->enter your new postal code-->site-->select-->your postal code-->select item-->setup-->align

Dec 12, 2008 | Meade ETX-125AT (500 x 138mm) Telescope

1 Answer

Changing the coordinates of the autostar for meade etx 125


What are you using as a reference for "LST time"? I assume you're aware
that stands for "Local Sidereal Time", and not Local Standard Time; some
folks have confused the two. Do you have another method to calculate
Sidereal time for your location?

When you set Date and Time in the Setup menu, you need to use the time
from the "clock on the wall" without any mental adjustments for Daylight
Saving or Time Zone; those settings are made elsewhere. From your
description of the problem, it sounds like you have a time offset,
especially if your Site location values are fairly accurate.

Whether you use Zip Code or City sometimes depends on where you live
with respect to a particular city. If you live several miles from the
nearest city, Zip Code may be best .

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Dear Roger,
I think moto gear is dameged.Please check or restart your unit.
Thanks.

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1 Answer

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When warm and indoors (!) connect Autostar to scope and by serial lead to a PC, allow Meade Autostar suite to update the Autostar Firmware to the latest version (2009!!)
Frome www.meade.com/support/auto.html :
How To Upgrade Your Handbox
To upgrade your Autostar first click on the link below to download the Autostar Update (ASU) Client Application for Windows. If your web browser allows you to open the installation file, you may choose that option when prompted. Otherwise, just save the install file to your local hard disk drive. When downloading is complete, double click on the saved file to start the installation. Follow the instructions provided to install Autostar Update (ASU) on your machine. When installation is complete, start ASU by selecting "Start Menu" -> "Programs" -> "Meade Inst" -> "ASU". If you have an active Internet connection and your telescope with Autostar is connected using the appropriate cable as listed above, ASU will detect and install the correct Autostar code directly from Meade's web site via the "Upgrade Autostar Software Now" button.
Autostar Update
Autostar Update is an application that functions to transfer the event files and software updates from your computer, through the serial port, USB or Connector Cable Set depending on your telescope model. The Autostar Update application is available as a stand-alone client application for Windows. The most recent versions of AutoStar Update automatically check for the newest versions of the AutoStar Updater and download it if necessary. It is critical that you use the most recent AutoStar Updater to ensure that you get the proper software updates for your system.
06/02/09 Autostar Update (ASU) Client Application for Windows, Version 5.6 (1,654 KB). This is the latest Autostar Update. Rev. 5.6 is compatible with the ETX-LS and #497EP Hand Controllers. This version is compatible with all versions of AutoStar II and #497 AutoStar computer controllers. This installation will automatically update the Update Client Application in AutoStar Suite™ Software. If you have previously installed the Autostar Update (ASU) Client Application for Windows, Uninstall the old version before installing this new version. 07/27/09 #497 AutoStar hand controller software update. Version 5BE2 (1,039 KB).
General update. Fixes many known bugs. Real time clock corrections. LXD75 polar alignment. Various LX90 pointing and tracking fixes. Adds new magnetic/true north alignment.
REQUIRES VERSION 5.6 AUTOSTAR UPDATER.

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1 Answer

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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

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