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MEADE ETX80AT-BB HI my name is roger my problem is the flip mirror in my scope is damaged i left the scope in the case to long in my closet the coating on the glass is damaged my question is how do i get the mirror out &if i can't can i turn it into a reflective type scope. hope you can get a solution for me thank's

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The ETX 80 is very difficult to work on. Getting at the flip mirror requires an almost complete teardown of the telescope and its mount. If you are not experienced at repairing the ETX scopes I would not advise trying this youself. I doubt that leaving the scope in the case too long is the cause of the coating damage. It takes years for fungus to really destroy coatings. I have seen newer Meade mirrors losing their coatings prematurely and feel this is a manufacturing defect. If the scope is in warranty it should go back to Meade. If not I'd have my dealer look at it and see if Meae will make an adjustment on it.

Posted on Jun 27, 2008


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Posted on Jan 02, 2017


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Need more information- several Meade scopes have a flip mirror like the ETX 90 for example. Usually it is in the position to use with an eyepiece. However it can be flipped so the rear port can be used on the telescope.

Hope that helps. There is a known issue with these old flip mirrors- the adhesive holding the mirror can fail. You must disassemble the scope and apply new adhesive to hold the mirror in place.

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The flip mirror has fallen off inside the scope. This must be returned to Meade for repair. Here is their customer service phone number:

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I need to clean the mirror. Larry

You would need to use this type of technique to clean the mirror:

However, you will need to dis-assemble the rear of the scope tube to get to the optics. Not a very easy task with your RCX ! in fact you should probably return the tube to Meade for cleaning seeing as this is a multi- thousand dollar telescope!

This scope is VERY EXPENSIVE, and should be cleaning by experts and or the factory. Call Meade directly here:

Jul 30, 2011 | Meade RCX400 20 in. Telescope

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What is involved in replacing a 20cm screw to the lens of a Meade ETX80AT scope?

Your local well stocked hardware store should have the exact replacement.

Feb 02, 2011 | Meade Optics

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76AZ-AD (180 x 76mm) Telescope: I recently purchased a Meade telescope but can not...

Does it have a name on the scope? If it has a MIRROR in the bottom it is a REFLECTOR.

If it has a lens on the front it is a REFRACTOR. Look on Meade's manual web site under the header REFRACTOR or REFLECTOR for one similar to your telescope.

May 16, 2010 | Meade 76AZ-AD (180 x 76mm) Telescope

1 Answer

All i see is the triangle thing at the ine of the tube

You are NOT in focus. Put the eyepiece with the largest number written on it into the scope. Go outside during the daytime and practice focusing on a distant object.

By the way the ""triangle" thing is called a spider and holds the smaller secondary mirror. Just in case --- this end is pointed UP -- ! Just in case you mounted the scope backwards! Like the picture on your question. The larger mirror is the BOTTOM of the telescope.

These types of scopes must be "collimated" once in a while. Watch this video:

Mar 05, 2010 | Meade DS-2114 ATS (325 x 114mm) Telescope

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Where, and how much, can I find a 4.5 mirror for a Meade telescope

Meade will not sell you a mirror- most likely. Other than buying a brand new mirror which will be expensive try looking on Craigslist for a 4.5 inch scope for sale CHEAP and take the mirror out of it.

Here is the Meade customer service web site you can also try here:

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Where can I get a users manual from thanks bern

There are several telescopes all named Explorer with that model number.

What is the full brand name of your telescope?

This may help you. If your scope has MIRRORS look under REFLECTOR on the below Meade web site of manuals for one similar to your telescope. They all assemble in the same way.

If your scope has a LENS in the front look under REFRACTOR.

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1 Answer

Image upside down

Hi, this is a common "problem" for astronomical telescopes. Same with my Meade 3" refractor and spotter. It is actually a design 'feature' not broken.

The issue is that most astronomical telescopes naturally show images upside down, or some combination of upside down and left-right.
(Astronomers usually don't care, because space has no up or down.)
It is just the way optics work when lenses or mirrors bounce and bend light. (And since the professional astronomer wants the most light and most direct image, they usually don't want extra devices just to make it right-side up.)

Reason that binoculars don't do that , is they employ special internal prisms to get the image back right-side up.

Easiest solution for astronomical telescope is to buy what is called a "star-diagonal" or "image-erector prism". These will usually make the image look normal for us earth-based folks.

I do not know what exact type your Meade 227 telescope is, but the spotter scope is most likely a simple refractor. So it MAY be possible to install a star diagonal onto it. Or might not. Depends on the exact spotter scope design.
Another option may be able to buy a replacement spotter scope that is designed for correcting image orientation.

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Did you break the mirror? --- or did you knock it out of alignment with the small secondary mirror in the front of the tube?

Contact someone at a local astronomy club to help you with collimation on the scope if nothing is broken.
Astronomy clubs by State-

Jun 12, 2009 | Meade Optics

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