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    Default Is this correct about eyepiece AFOV and magnification?



    Hi All,

    I want my eyepieces TFOV to match my telescopes maximum FOV. Do I have the following correct?

    The greater the magnification of the eyepiece, the greater the eyepiece AFOV must be to achieve my scopes maximum FOV.

    Harry
    Orion Apex 102mm Mak, Celestron 6x30 finder, Orion 90* prism diagonal, 45* erecting prism diagonal, Celestron straight through porro prism, Tele Vue 1.8x Barlow, 25mm 52* Super Plossl eyepiece, SVBONY 23mm 62* Aspheric eyepiece, 8.5mm Konig eyepiece

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    Default Re: Is this correct about eyepiece AFOV and magnification?

    Mathematically true. But what you are attempting to do will make the use of high magnifications impossible. You will be stuck with one or possibly two wide-angle, low-magnification eyepieces, and you will complain that planets are too small. It is not a reasonable thing to want.

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    harryhh's Avatar
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    Default Re: Is this correct about eyepiece AFOV and magnification?

    Thanks KathyNS,

    I think I understand that to mean, that at some point, at a medium or more magnification, I won't be able to get the AFOV of an eyepiece to match the max FOV of my scope. Such a thing would require an eyepiece to have an AFOV that is unreasonably large.

    Harry
    Orion Apex 102mm Mak, Celestron 6x30 finder, Orion 90* prism diagonal, 45* erecting prism diagonal, Celestron straight through porro prism, Tele Vue 1.8x Barlow, 25mm 52* Super Plossl eyepiece, SVBONY 23mm 62* Aspheric eyepiece, 8.5mm Konig eyepiece

 

 

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