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Thread: Weird (or maybe elementary) question

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    Default Weird (or maybe elementary) question



    Ok, so I've never been much of a bino observer, but I just noticed something weird when switching between binos:

    I'm using my Aculons - everything looks normal. Colimation, focus look good. Switch to a club member's C-trons and I'm seeing double. I'm thinking his are really out of collimation, but he's seeing everything fine - crisp, single stars. He looks through mine and no problem.

    Later, I look through his again and all is well.

    What gives?
    Scopes: Orion ST120 refractor, vintage Celestron C-8
    Mounts: ES Twilight 1, Celestron EQ fork with pod and wedge

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    Default Re: Weird (or maybe elementary) question

    Your eye/ brain may have had a momentary issue with merging the images together.
    It happens occasionally and is more common when using binoviewers for the first time.
    j.gardavsky and DeanD like this.
    Refractors: Antares 105 f/15, Celestron 150 f/8, Stellarvue NHNG 80 f/6.9, TAL 100RS f/10, TS 102 f/11, UR 70 f/10, Vixen SD115s f/7.7
    Mounts: Celestron SLT w/ pier mod & EQ-3 tripod, Celestron hypertuned CG-5 w/ tracking motor & Argo Navis, Manfrotto 028B w/ Stellarvue M2C, Manfrotto 055PRO w/ 128RC, TAL-1 HD EQ, Vixen SXP w/ HAL-130 SXG & half pier Diagonals: 2" Astro-Physics MaxBright, 2" Zeiss/ Baader prism, 2" Baader Herschel Wedge (Photo Version), 2"
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    Amici prism, 2" Stellarvue Dielectric, 2" TeleVue Everbrite Eyepieces: A-Z

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    The weakest link in the optical chain is the large nut located directly behind the
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