Question about Meade Telescope

1 Answer

ETX90 power supply

Can someone tell me which the centre pin of the 12v adapter should be... + or - Also does anyone know if the telescope draws more than 15-00ma. Thanks

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 1,113 Answers
Re: ETX90 power supply

The center pin is positive & you will need a minimum of 1200 mA. Here's a link to a great site with lots of good information: Please update the question & let us know if the information given was useful to you - Good Luck!

Posted on Aug 29, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

How do i convert my 1.25 to a 2in so i can use the meade 56mm 2in eyepiece?

The ETX90 may not have enough back focus for a 1.25 to 2 inch adapter. You will need 1.6 in extra focus. (Try putting a eyepiece barely in the holder and see if you can focus CAREFULLY!) a 56mm eyepiece will seriously vignette since the opening of the scope is only 1.25 inch so do not expect a wide field.
Link below is for an adapter

Jan 01, 2013 | Meade 07178-02, Eyepiece Super Plossl 56...

1 Answer

Tasco telescope what is the specific power adapter

In this download, which is said to also apply to your model, a 12V, tip positive, 750mA minimum supply is specified.

This means you can use any such 12V supply of say 1A or more.

May 16, 2012 | Tasco Starguide St-60700ct Computerized...

1 Answer

I just bought a meade telescope from a thrift store. I cannot find the model number on it. It seems to work fine, but it is missing the power cord. It may be too old to get a replacement, but I won't know...

Telescopes do not have serial numbers-- except for a few custom made scopes. Most actually have names and numbers like LX90, LX200, RCX, ETX90, and so forth.

This is probably a small refractor, or reflector style Meade scope. Look under the refractor header or the 4.5 inch reflector header at the manuals and see if you can match up a manual to your scope:


Apr 25, 2011 | Telescopes

1 Answer

2 small lens fell out of my telescope how do I get them back in and where do they go ??

The Meade ETX90 does NOT have small lens! It has a large curved lens in the front. and a holder for the eyepiece in the back (top). There is also a camera port in the back, and a flip lever that sends the light either straight back to a camera, or UP to the eyepiece holder.

There is an INTERNAL secondary mirror mounted on the back of the front large lens. If this fell off INSIDE, you will need to remove the front lens to fix it. NOT an easy fix as the optical alignment can get messed up when you do this.

Here is the manual for an ETX90, you should read it completely.

and for the hand controller:

Jun 18, 2010 | Meade ETX-90EC (325 x 90mm) Telescope

1 Answer

Is it possible to upgrade the electronics in a etx90 telescope to take advantage of the auto align technology?

Yes, uploads available at Meade's website. You will need their downlaoder program (there as well). NOTE: the operation can take about an hour, so run the telescope on external power so it doesn't run out.

Jun 12, 2010 | Meade ETX-90EC (325 x 90mm) Telescope

1 Answer

Ik wil graag een Nederlandse handleiding voor de Meade ETX 90

Meade has all of their ENGLISH language manuals on this web site.

Here is your telescope- ETX90

A dealer in the Nederland may have one in your language. Locate a nearby telescope shop.

Apr 27, 2010 | Meade ETX-90EC (325 x 90mm) Telescope

1 Answer

Hi I have a 1980's C8,no power supply or manual

If you will email Rod Mollise he can tell you exactly what power is needed for this telescope.

Here is his web site:

Feb 17, 2010 | Celestron Telescopes

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: someone will know the proper sequence and color to reattach.

Jun 22, 2009 | Meade LXD55 Telescope

1 Answer

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.

Mar 14, 2008 | Meade ETX-125EC (500 x 127mm) Telescope

Not finding what you are looking for?
Meade Telescope Logo

Related Topics:

66 people viewed this question

Ask a Question

Usually answered in minutes!

Top Meade Telescopes Experts

Joe Lalumia aka...
Joe Lalumia aka...

Level 3 Expert

3185 Answers


Level 3 Expert

413 Answers

Geoffrey White
Geoffrey White

Level 3 Expert

3961 Answers

Are you a Meade Telescope Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides