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Thread: 26mm Plossl vs 25mm Cel LX?

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    Default 26mm Plossl vs 25mm Cel LX?



    I just got a 9mm Celestron Cel-LX Eyepiece to replace my 9.7mm eyepiece because I was tired of the 9.7mm plossl's short eye relief. I especially love the twist up eyecup.

    Now, I'm thinking about upgrading my 26mm Meade super Plossl to a 25mm Celestron Cel-LX but i'm not sure if it would be much of an upgrade. Is a 1.1 degree field of view much of a difference than a 1.3 degree? And is there much of a difference in quality of the eyepieces themselves to make the upgrade? Not to mention Amazon is now running a sale on them. $66 to the usual $76. Making the upgrade even more tempting.

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    Default Re: 26mm Plossl vs 25mm Cel LX?

    The X-Cel will have a bit better eye relief than the Plossl so if you wear glasses it will be a help.
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    Default Re: 26mm Plossl vs 25mm Cel LX?

    Thank you. I'll keep that in mind. Do you know if there is much of a difference in image quality?

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    Default Re: 26mm Plossl vs 25mm Cel LX?

    They are both good eyepieces, the X-Cel having a slightly larger AFOV and longer eye relief.
    If these are not needed then the 26mm Plossl will be good.
    Plossl have eye relief of about 70% of the focal length of the eyepiece. 26mm = 18mm eye relief.
    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
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    Default Re: 26mm Plossl vs 25mm Cel LX?

    Hello Baward,

    the Meade Super Plössls are just symmetrically grouped lenses, not the true Plössls with the 3 different glass materials and 3 different lens surface curvatures in 2 slightly asymmetric cemented doublets.
    The new Celestron X-Cel LX have received remarkably very good reviews, and they are cheaper than the Tele Vue Plössls, maybe 1/2 price.
    I have 3 Tele Vue Plössls, but not the X-Cel LX.

    I have parted with my old Meade 32mm Super Plössl (Japan), and purchased the Leica L f=32mm (Germany),
    but Leica plays in another league.


    So, the X-Cel LX might be a very good alternative in its price category,

    JG
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    Default Re: 26mm Plossl vs 25mm Cel LX?

    I do wish someone would return to making a true asymmetrical Plossl, I have one "modern" 23mm binoviewing set made by Long Perng in 2004 that are very nice.
    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
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    Default Re: 26mm Plossl vs 25mm Cel LX?

    I can't for the life of me find the article I was reading once, but somewhere within it, it stated that the original patents that Al Nagler had on the redesigned Plossl were actually on an improved asymmetrical Plossl. I do know they stand shoulders above the other Plossl competitors, but can't say for certain on the modern production being an asymmetrical design. I can say their edge performance is fabulous.
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    Default Re: 26mm Plossl vs 25mm Cel LX?

    I have a copy of the original Nagler patent and they are definitely Symmetrical using only two glass types.
    If I can get anything to post as an attachment I will post the patent papers

    As far as I know the last producer of a full line of Asymmetrical was Clave
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    Default Re: 26mm Plossl vs 25mm Cel LX?

    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
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    Default Re: 26mm Plossl vs 25mm Cel LX?

    Looks like it works just fine to me, Gabrielle. Nice work.
    Bryan

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