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Thread: Loose mount

  1. #1
    tiphiid's Avatar
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    Default Loose mount



    I have an Orion mount for my short tube 100mm, 600mm focal length archromat. I also use the same mouth for my 102mm, 1000mm focal length Celestron archromat. The problem is that after setting up and finding an object. there is a little "slop' on the RA axis. It is not a go to mount, but does have a drive motor on both axis'. It does track very well, but the play in the RA is annoying. I also have a 6" Meade refractor that does the same thing. Is there anyway to prevent this play.

  2. #2
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    Default

    It would help if we knew what type of mount it was.
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    Default

    Is the play like backlash in the drives, meaning it doesn't start tracking right away, or doesn't reverse directions right away?

    Is it like a loose clutch, where even with everything locked down, and the motors not driving, it still swings +/-?

    Or is it like a loose RA shaft, where the the shaft can slide up and down in the housing?

    Provide some details on what mount you have and what the play does or feels like, and I'm sure someone will be able to help with some advice on where to look.
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    tiphiid's Avatar
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    Default

    The mount is an Orion GEM that came with the scope with I bought it 5 years or so ago. It tracks fine when I find an object and lock both axis's. The problem is that there is about a 1/8 play on the polar axis. If you touch the scope it scoots the scope right or left by about 3 degrees. It still will track at where ever the scope has moved the few degrees to. You can push the scope back to the original object without unlocking the axis. Its just an annoyance really. This has just started occuring in the last two years.

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    Default

    I agree with Gunmonkey: "a loose RA shaft, where the the shaft can slide up and down in the housing?"

    I had the same thing happen with my EQ5 mount. I will try to find my old post as it may help.

    Here's the link: Skywatcher EQ5 pro RA slop

    Hope it helps.
    Gordon
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