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  1. #1
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    Default C5 or Orion 80ed



    Would a C5 make a better terrestrial scope than an 80ed? Clarity and Sharpness

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    Default

    For strictly terrestrial use you actually need a spotting scope. Something like this:

    [ame=http://www.amazon.com/Celestron-52252-100mm-Ultima-Spotting/dp/B0002862UW/ref=sr_1_5?ie=UTF8&qid=1291775707&sr=8-5]Amazon.com: Celestron 52252 100mm Ultima Zoom Spotting Scope: Camera & Photo[/ame]
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    Default

    Just between those two, I would go with the 80
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    Id go with the ED refractor too. Maybe smaller but no mirror slop, sharper focusing also on the ED. And best of all no central obstruction. Really shines at hi mag where fine focus counts.
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    Thanks for the replies, thats what I thought.

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    Honestly depends...IF i had a sea side home and wanted to check out the sailboats in the bay ..(ok the young ladies sunbathing) I'd take the C5 every day.... all day....

    More magnification...better resolution.... especially on a slow moving target because the FOV is much smaller...

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    Default

    What exactly is resolutuion?

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    Quote Originally Posted by Dusty Ford View Post
    What exactly is resolutuion?
    Just the result of my fingers being cold and using a laptop with a small key board PLUS not using a spell checker ...
    sorry about that !!!!

    Sorry but for the use I mentioned the C5 wins every-time..
    now if I were checking out a field or pasture and counting the number of animals grazing then the 80 mm would be a better choice

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  10. #9
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    Default

    What is resolutoin? Clarity? Bightness?

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    Resolution is the clarity of fine focus before the image is overly magnified beyond the 50X limit & begins to degrade with no extra details at higher mag just dimming & a blurry hard to focus image, this assumes the seeing is perfect. Many times a smaller refractor will outshine a slightly larger mak or reflector or SCT due to the seeing especially an APO.
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