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

Can't get to focus.

My telescope was boxed for 10 months. Now I turn the knob and even without the grub it still will not focus. I turned the knob for about 10 minutes and it nothing.

Research, Knowledge and Information :


5 Reasons You Can’t Focus And What To Do About It


Feel like you can never focus deeply? You’re probably not meeting these needs for continued attention. How to get your quality work back:
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Can't Focus? - Real Simple


Can’t Focus? Take this self ... 31 to 45: You probably feel constantly scattered and as if you can’t get it together.
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Celestron Reducer/Corrector -f/6.3 issue? Can't get to focus ...


Celestron Reducer/Corrector -f/6.3 issue? Can't get to focus! - posted in Celestron NexStar : I own an evo 9.25 and when ever I install this piece of equipment i can ...
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Attention Sappers: 5 Reasons You Can't Concentrate - Health.com


Attention Sappers: 5 Reasons You Can't Concentrate ... “By getting adequate rest, like hitting the sack earlier, you should get your focus back,” he says.
Read More At : www.health.com...

What to do when you just can’t seem to focus


What to do when you just can’t seem to focus. ... Instead of spending an hour “trying to focus,” go outside! Get into nature. If you live downtown like I do, ...
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How to Focus on Studying in 6 Steps - ThoughtCo


If you need to know how to focus while studying, then these six easy steps will help get your brain on the material instead of in the clouds.
Read More At : www.thoughtco.com...

javascript - Can't get .focus() to focus on an input with an ...


I am having issues with a code I am using to check email validity before sending it off to a database. I have a javascript code that checks the email in the following ...
Read More At : stackoverflow.com...

Distractibility | Inattention | Focus Issues in Children ...


Here are some of the issues that can cause trouble with focus. ... notice patterns in when she can and can’t focus. This can help you can make changes at home and ...
Read More At : www.understood.org...

I Can't Seem to Focus Anymore. Is Something Wrong with Me?


I Can’t Seem to Focus Anymore. Is Something Wrong with Me ... to focus on and that could help to get you going ... and fatigue so you cant focus on ...
Read More At : www.goodtherapy.org...

Suggested Questions And Answer :


Can't Focus I just bought a Made etx-125ec from a friend.  I locked onto a bright star and turn the focus to each extreme and cannot get the object in focus.  I was curious if it is possible for someone to damage the focus mechanism by turning it too far.


The focus screw can come out if run too far. Point it straight up, give the side of the optical tube some light 'thumps' and turn the focuser clockwise. You should be able to see the mirror moving backwards in the cell.
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Etx cant focus


The LPI camera will HIGHLY magnify the image-- about like a 6mm -8mm eyepiece-- tiny adjustments are needed to focus. You can buy a .5 or .3 focal reducer which will widen the field of view and make it easier to focus--On my LX90 --- it takes about 20 TURNS of the focus knob to go between the eyepiece view and the camera view!
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PROBLEM WITH ETX125 The manual focus bar will not focus the telescope. Sent into Meade TWICE (once under warranty, once not!) and same problem reappeared AGAIN within months. I don't use the electronic focusing device. The problem is NOT the knob--it works. Problem is the pin focusing the OTA does not cause it to move. Anyone know how to take the OTA apart on a ETX125? I don't want to pay Meade another $150 bucks to get the same problem back!


You will find assembly and dis-assembly instructions with pictures on the Mighty ETX web site.Be very careful because all the wiring runs through the central bolt in the base and can be easily broken. Here are some good links:http://www.weasner.com/etx/menu.htmlhttp://www.google.com/url?sa=t&source=web&cd=27&ved=0CDgQFjAGOBQ&url=http%3A%2F%2Fwww.weasner.com%2Fetx%2Ftechtips%2F2008%2Fgailey%2FETX-125_AZIMUTH_and_ALTITUDE_REPAIR.doc&rct=j&q=etx%20assemble&ei=XBv9TNn-F8KBlAeb3pSdBQ&usg=AFQjCNGnhLDeBgR03f1-y4mnc8TjtcCMPg&cad=rja
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Can't focus using 5mm lens


TOO much magnification for that 3 inch telescope. The most you will get is about 120 power or so on perfect sky nights. Try a 10mm or 9 mm as your most powerful eyepiece. 50 times aperture is the maximum possible.
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Focus. Knob is tight - Meade ETX-125EC (500 x 127mm) Telescope


Remove the OTA from the rear cell; unscrew the focuser shaft about half way (CCW) and remove the knob or electric focuser unit; there are three very small hex cap screws which hold the OTA into the rear cell; remove these and save in a tuna can or similar, because they WILL get lost if you place on the countertop. Once done, merely grasp the blue OTA in one hand with a rubber glove for grip and the rear cell/fork arms in the other hand and pull gently apart....do NOT twist while separating! You will see where the threaded focus rod inserts into the OTA....typically binding is causing the shifting, but most of this is due to poor milling by Meade on some 125 models. You can improve these imperfect models greatly, but do not expect to eliminate all focus shift. Run the focus rod gently all the way CCW until you feel pressure...do NOT force or you will damage. Once there apply a thick grease, such as pure white Lithium (available in the tool dept. at Lowes) in a very thin layer, pushing hard into the threads...do NOT apply too much or you risk getting this stuff on the optics eventually. Once done, put the knob on the rod temporarily and run it in and out all the way slowly about 3-4 times. Once done, run it HALF-WAY between all the way and all the way out and stop. At that position, turn the OTA to about a 45-degree tilt, with corrector down and put 1-2 DROPS of 3-in-1 oil right where the threaded rod goes into the threaded rear cell of the scope and QUICKLY run the focuser CLOCKWISE to get that thin bit of oil into the rear cell threads. Once done, run the threaded rod slowly all the way CW and then CCW about 2 more times. This procedure will greatly improve the performance....NOTE: do NOT put more than 2 drops of oil on the rod!
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Not getting power to the drive motors - Meade ETX-125EC (500 x 127mm) Telescope


I own an ETX90. Is the power light on the computer control panel ON?If yes then the board is probably OK. If NO- either the power cable is bad or the board is blown.Try a new power cable first, and or install batteries and see if that works. If the light is on you could have a loose wire inside. Re-seat the connections inside the base. Read these instructions:http://www.weasner.com/etx/techtips/etxtu.htmIf it still does not work you can send it back to Meade for repairs. Call them about that here:http://www.meade.com/support/index.html
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My Meade ETX-125EC Telescope has a broken horizontal lock lever where can I get a replacement? thanks


Meade can probably sell you one :http://www.meade.com/support/index.htmlYou might also find something that would work to tighten it at a well stocked hardware store.
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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
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ETX 125 Loose image when focusing


The ETX family (and other Meade LX telescopes), use a moving mirror system for focus. The focus knob moves the main mirror in and out. For smooth operation, there is some slack on the central tube that allows the mirror to rock slightly as it moves. That is a normal condition, and the movement is magnified, the greater the magnification of the eyepiece.
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