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Focus Issues I have a Meade etx-125ec unit. I am unable to focus on any image. It appears the focus knob is loose and sloppy. It turns real easy and never gets the object in focus. Any suggestions on correcting this?

Posted by vortac on Sep 27, 2007

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Weasner's Meade ETX Accessories


Makes it real easy to ... knob on the ETX-125EC. The hole for the focus knob shaft is only ... am generally pleased with the unit, I have found a ...
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Weasner's Meade ETX-125EC User Feedback


This page is for user comments and information specific to the Meade ETX-125EC. ... the focus knob moving ... from Meade, but how do I get it? I have never had any ...
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Meade ETX Astro Telescope/ETX Spotting Scope Instruction manual


Meade ETX Astro Telescope/ETX Spotting Scope Instruction manual. ... (ETX-105EC or ETX-125EC) to infinity. Rotate the focus knob ... object and focus the image using ...
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Full text of "generalmanual 000009681" - Internet Archive


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Full text of "Sky and Telescope 1999-10-pdf" - archive.org


image All Image latest This Just In Flickr Commons Occupy Wall Street Flickr Cover Art USGS Maps. Metropolitan Museum. Top NASA Images Solar System Collection Ames ...
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Focus Issues I have a Meade etx-125ec unit. I am unable to focus on any image. It appears the focus knob is loose and sloppy. It turns real easy and never gets the object in focus. Any suggestions on correcting this?


Try tightening the grub screw that fastens the knob onto the shft that it turns. Better still, buy a flexible extended focusser which makes focussing much easier. Check on eBay for "Meade flexible focus"
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Hey guys! My brothers chipped in to get me a telescope for my birthday. It's a celestron sky prodigy 70. I took it out a few times with zero experience except for what I picked up from reading the owner manual. Please excuse my language as I do not know any common terminology nor am I very good at trig but I at least know the terms relating to math( if thats what it really is talking about). So, when I look through the lens I get a nice sharp and crisp image with the factory provided lens. I know this is an entry level telescope but I want more magnification. So I bought an x-cel lx 2x Barlow lens and a 24mm-8mm zoom lens. I know the max magnification is 165x and the focal length is 700 so that puts my strongest eye piece at a little over 4mm meaning a 5mm is pretty much what I'll get out of it. I tried the Barlow and the zoom lens a smidge over 8 (9 I hope it was at) and the image is very soft. Then again I am in Los Angeles and looking out of my window through a fairly heavy marine layer. But the image comes out sharp if I use my factory lens, or just the zoom, or my already provided 24mm with the Barlow or the zoom at a lower magnification with the Barlow. My provided 9mm with the Barlow produces a blurred image and I tried to focus but it still seems blurry at best. I think I'm safe to say a 9mm on a 2x Barlow is still within the max effective range of zoom? I'm wondering if I shouldn't expect much out of the telescope or if I should return either the Barlow or the zoom lens or both and get some higher quality object specific lens instead. Or maybe I'm not focusing correctly? Or a zoom should not be used on a Barlow? Any insight would be very helpful.


Hi, I can see you'r statring a interesting journey in amateur astronomy. Which can be really amazing but also disappointing, because usually people are expecting too much (specially after viewing beautiful astronomy pictures on internet).Before we go back to your question lets go over some basics here:Your telescope has a F10 aperture (Focal lenght / Diameter).So to be able to see the maximum amount of details from it, the smallest eyepiece you need is a 10mm (eyepiece mm = to f number of thetelescope).Then it's easy to find the maximum useful magnification: 700mm (focal lenght) / 10mm (eyepiece) = 70x Ok but why does the manufacturer say that it can be at a max of 170x... they are not really lying, if you get a smaller eyepiece it will make the image bigger but will show no additional details than a 10mm one. But the image being bigger it can make details easier to see.That for the questions about magnification an image quality.The more pieces you put between you eye and the telescope mirror, the dimmer and less contrasty the image will be. Especially after you go higher that the maximum useful magnification.Hope this helps. And enjoy wathching the stars and planets, it is a always a beautiful sight.
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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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I've just purchased a used TAL 1 telescope complete with eyepieces and Barlow lens. However I can only get objects into focus by moving the focuser to it's limit and then physically lifting the eyepieces part-way out of the eyepiece holder. I don't think this is a collimating problem and my searches on the internet turned up a possible cure - a focuser extension tube (11/4"). Your assistance will be appreciated.


Yes, the "back focus" is too short. That extension should work.
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I own a DS-2114 telescope. Recently the focuser wouldn't turn, and Meade sent me another one. After I replaced it when I went to use it objects could not be focused too well. What can be done to correct this issue? Thanks for your time. Pete


Hey Pete. I had the same problem. You need to zero the whole thing and re allin it before the new focuser interlinks with the brains of the teliscope.
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Meade LX200R 12" Mirror Lock


The 'lock' is a ring gear that closes a ferrul against the draw tube to restrict its motion. It is not intended to be a hard lock. Try the Meade Advanced Users Group for further tips.http://www.mapug-astronomy.net/
Read More At : 8" LX90 LNT Schmidt Cassegrain Telescope with SmartFinder w/......

Focusing Issue Last night, I used my Celestron 11" NexStar11GPS for observing and astrophotography, and it worked like a charm. Tonight, with the same equipment, I am unable to focus the telescope at all. I turned both the coarse and fine focus knobs counterclockwise as far as they will go, but every object is still out of focus--and once I reach a certain point in turning the focus knobs, the object simply moves in the eyepiece rather than becoming more focused. This problem is present with or without the use of a diagonal. The only thing I did with the telescope between last night and tonight was to mount a Celestron StarPointer (a holographic sight-type finderscope) onto the side of the telescope tube's back end with some 8x32 3/8" screws using pre-drilled screw holes. What happened?


The screws should be short enough not to stop the primary's travel, but pull them out and try it again. Good luck! George.
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When I turn the focuser, the image never comes to focus. When I get to what I suspect is the end of the focus range, the tension on the knob firms up a little, but does not stop turning.


There is a rod inside that the focuser attaches too.It may be broken inside or has come loose from the rod. Locate a local Astronomy club the members will help you figure it out.
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Problem with alignment of Meade LX90 8" telescope


Start from scratch- RESET the hand controller.Calibrate motors using the same power source you will use outside.Re-train the drivesCalibrate sensors on PolarisUse either the 110 volt power cord, or buy a 12 volt power pack and the proper Meade 12 volt cable. (www.scopestuff.com carries the right 12 volt cable)If your scope is NOT the LNT or GPS model you must level the tripod before you align. Go to home depot and buy the $3 small plastic two way bubble level, or the bulls-eye style bubble level.Further trouble, I suggest going to the LX90 Yahoo group forum, and asking questions there.Good Luck
Read More At : 8" LX90 LNT Schmidt Cassegrain Telescope with SmartFinder w/......

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