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Thread: ETX 125 aligning problem

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    Default ETX 125 aligning problem



    Greetings!

    Thank you for having me on this forum, this is my first post.

    I was wondering if there is someone that may be able to assist with a new Goto ETX Telescope I bought over the weekend. Any help or assistance will be greatly appreciated.

    I bought a Meade ETX 125 Audiostar/GOTO scope on the weekend. I've had 2 clear nights thus far but haven't been able to align it properly. First of all, I live in Adelaide, Australia, which is in the southern hemisphere. When I first got the scope, it was constantly circling which was strange. I did a reset and re-set up the scope and that weird behavour went away. I entered the language, location (AUS->Adelaide), date, time, and telescope model all fine. I then levelled the scope mount, attached the scope to the mount, and pointed the scope compass north and at 0 degress (flat), which from what I can tell is considered the home setting. I've also setup up the finderscope and gone through all the settings in the controller etc.. I've also watched several utube videos on the scope.

    This is where the alignment process starts getting strange. If I do a 2 star alignment, it moves to the first star and awaits for me to center it and press enter. The problem is, it's slewed to an area that is absolutely no where near - I mean it will point in the complete opposite direction to where it thinks the star is. Almost as though the start position was completely wrong. If i slew it to the star and center it, which is in a completely different portion of the sky, the scope gets confused and alignment actually fails. Turn off, start again. Obviously there is a threshold of how far the centering can take place before something is considered wrong and I'm going over that. If I run through any if the 2/1/Easy alignment processes, with or without a little bit of centering movement (for testing), the scope will accept and alignment successful is displayed on the control unit. If i then use the scope with these so called inaccurate alignments, it's completely off, like slewing to the moon, mars, saturn or jupiter. Ask the scope to go there and it will point in a completely different direction. Also, ask the scope to go to a star that you know and can see with the naked eye, but it won't becuase it thinks it's below the horizon.

    To me, it seems as though my start position prior to alignment is wrong or at least that would explain this inability to be accurate. The scope's location is set to adelaide, with the correct time, location, and even slightly altered lat/long for my exact location. I also tested using the high precision feature, but that didn't do too much.

    I am plugged in using AC power. The scope itself moves fine, and the optics are better than I expected (Ie; I am happy with the optics - I can see saturns rings crystal clear with the included 9.6mm).

    If there is someone who would be able to assist, I would be eternally grateful, perhaps someone who both knows the ETX's or meade's and who lives locally. I should also point out, this is my first computerised scope - I have both patience and logic, so believe there is nothing wrong with the scope, but perhaps something wrong with me (ie; my starting position)

    Thanking you in advance.

    Matt

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    Default Re: ETX 125 aligning problem

    The two things that first come to me is to check that it is using the southern hemisphere configuration (even though you have input your location it may still by default use the northern hemisphere mode until you change it) and your home position MAY (not sure here as I've never been to the southern hemisphere) need to be pointing at the south pole instead of north which is what is used in the northern hemisphere.

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    Default Re: ETX 125 aligning problem

    Hello and welcome to the forums Matt, hopefully the telescope is up and running right away
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    Default Re: ETX 125 aligning problem

    Hi Matt
    I’ve got the same scope. If you’re getting the levelling and putting on compass north right there are a couple of things in the settings you can check. Firstly make sure the etx 125 model is selected in the audiostar. When entering the gps location make sure youve entered coordinates for the site with south and east prefix. Double check in the site that it is +9.5 gmt timezone. My etx125 alignment is prettywell spot on, so there is something amiss somewhere. As you can see Im in Adelaide (northern) as well.
    Cheers Al

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    Default Re: ETX 125 aligning problem

    Matt if the scope thinks a star is below the horizon when you know its visable then your either your timezone is set inncorrectly or your position entered is incorrect. I’ve been down this path. I saw your other post there is an etx125 in settings under telescope, you pick the wrong scope and your ratios are all screwed. That selecting etx 80 was only for the new etx90, which is a long saga but you shouldnt have that problem.
    Al

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    Default Re: ETX 125 aligning problem

    Hi Alval,

    Yes, I've had a lot of strange issues with it thus far, but they are slowly going away. I've never seen something change (ie; get better like this) before. In the last few days, it hasn't complained about stars being under the horizon which I can see, and it has been behaving quite well since yesterday. Yesterday I set it to an ETX 90 and ran through all my tests again indoors, and it knew where it was. Last night confirmed it was good on ETX 90 but tested on ETX125 to be bad. I just then booted it up and retested it on the 125, and there's no issues ??? Beyond strange is no word for it. I just did an indoor dry run with it set to 125, and it was fine. Throughout this whole process my settings have been the same, 9.5+, DST = YES, Australia/Adelaide as the city, really - it's the basics. It seems to be working which is welcoming but scary too.

    Thanks again.

    Matt

 

 

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