Question about Meade ETX-90 (48x90 mm)

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I have a Meade ETX 90 EC with a problem with the declination lock (verticle lock). I talked with a Meade tech rep who said to remove the know, but it will not come off. He also said they no longer stock parts. So, how to remove the know and once that is off, what can be done?

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Try holding the metal ring with the down and twisting the dial to the left independently

Posted on Mar 01, 2009

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Www.weasner.com has a section on this repair. its not to difficult, you should be able to do it in an afternoon.

Posted on Dec 09, 2008

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The circuit board that holds the batteries for my ETX is corroded and I need a new one. How can I get one?


Is the problem that you left the batteries in the battery compartment? (a no-no, BTW.)

If so, you might get away by cleaning the board--if the circuit traces and components haven't been damaged.

Try mixing a tablespoon of backing soda with a cup of warm water. Using whatever applicator seems appropriate--a Q-tip, or small brush--clean the corrosion from the board with this solution. Wipe and dry thoroughly.

Inspect the board for broken circuit traces and damaged components.

If nothing is obvious, put fresh batteries in and try it--it will work, or it won't.

If it does, congratulations. If it doesn't contact Meade customer support at this link: http://www.meade.com/support/index.html

Good Luck!

Mar 25, 2010 | Meade ETX-90 (48x90 mm)

1 Answer

Need instruction manual for 1996 or 1997 etx 90 basic model


The manuals are all available to download from www.meade.com.

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!

Apr 11, 2009 | Meade ETX-90 (48x90 mm)

1 Answer

Autostar


Are the batteries flat?
Is the cable properly connected to the scope? Unplug and reinsert both ends.

Aug 24, 2008 | Meade ETX-90 (48x90 mm)

1 Answer

One of the gears in the Azimuth motor got a flat spot because the worm gear was adjusted too tight. It is a 24 tooth nylon straight gear, very small- only about 1 cm across, but if this gear isn't working...


Below is the contact information for Meade parts. They are the only reliable source unless you know a local dealer that you can trust.

http://www.meade.com/support/contact.html
Jerry G.
Meade Instruments Corporation
6001 Oak Canyon
Irvine, CA 92618

(800) 626-3233 (U.S.A. Only)

Fax: (949) 451-1460


Apr 30, 2008 | Meade ETX-90 (48x90 mm)

1 Answer

I have a Kodak camera with a lens adapter that has 55 mm threads. How do I attach the Meade 64t-adapter to it?


Try a photo shop to see if you can get a T-adaptor to fit your camera (this is for SLR cameras without lens attached - the telescope becomes the lens)

But if you mean the 55mm filter threads, ie with the lens still on the camera, then you have the wrong thing. You need instead a contraption that holds the camera in position to take photos through the eyeepiece of the telescope (ie both telescope eyepiece and camera lens remain in place). With non-SLR cameras, that is the way to do it.

Apr 18, 2008 | Meade ETX-90 (48x90 mm)

1 Answer

Meade etx-80 sticking


Some (not all) versions have an end stop - it it just reaching that? The scope will rotate only aboit 3 complete turns between the 2 ends.

The 'correct' starting position is as follows: Place scope on tripod or table with control panel at the West. Unlock the declination lock (horizontal slew). Rotate scope anticlockwise until it hits the end stop, Then roate it back clockwise until scope is pointing North (should be about 3/8 of a turn, as the end stop is at South West). Then lock the declination, Set the tube horizontal and continue with the alignment process.

Autostar always thinks you have set the position like that. If you haven't, it will work OK until it tries to rotate past the point it won't go, then chaos results!

Feb 12, 2008 | Meade ETX-90 (48x90 mm)

1 Answer

ETX-90 Focus


I suggest trying a different eyepiece first to see if that's the problem. Otherwise, if it was moved without adequate protection, there is a chance the mirror was shifted or damaged. A damaged mirror can't really be fixed since it's specs are very rigid. If it turns out to be a problem with the mirror the best thing to do is find an expert on telescope mirrors to try and fix the problem.

Nov 12, 2007 | Meade ETX-90 (48x90 mm)

1 Answer

BSA rifle scope


its a metric 1.5 for the cam adjustments

Nov 11, 2007 | BSA Big Cat 3.5-10X 42mm (3.5-10x42 mm)

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