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Thread: TMB 100mm F/8

  1. #61
    RichA's Avatar
    RichA Guest

    Default TMB 100mm F/8



    On Sat, 27 Nov 2004 22:07:47 +0000 (UTC), "Markus Ludes"
    <apm_telescopes@web.de> wrote:


    Any reason there is some colour left? I'd have thought
    Tak would have pulled out all the stops when making
    this instrument? They did use fluorite for one element,
    right?


  2. #62
    ValeryD's Avatar
    ValeryD Guest

    Default TMB 100mm F/8

    "Markus Ludes" <apm_telescopes@web.de> wrote in message news:<f6bb11422c494ea5bb0183cd460cef68.30545@mygat e.mailgate.org>...

    1. I looked through 150mm F/7 FCT and didn't saw any false color.
    You told me, that you too didn't saw any false colors there.

    2. These two TOA may be defective. I read several reports with TOA
    and nobody were able to detect any false color after a given
    scope is fully cooled down.

    3. You can easily say, that your saw some colors in your TOAs - in
    your marketing intentions. You always saying what is necessary
    for you at a given moment.
    If only you was a dealer of TAK, I am 200% sure, you will always
    say, that neither TOA and FCT show even barest trace of false color!


    VD

  3. #63
    Yuri's Avatar
    Yuri Guest

    Default TMB 100mm F/8

    aries@mercury.kherson.ua (ValeryD) wrote in message news:



    Valery, despite TAK TOA concept that said: "wonderful effect on
    aberration correction, which is only of approximately 1/100 of the
    conventional apochromats telescope" the color correction in the unit
    that we have tested was very good, but not as above and with color
    shift of 0.2mm from 436nm to 656nm (with spherochromatism near zero).

    If your H-bomb has similar design - one thing to remember - the cool
    down time is infinite.

    Regards, Yuri

  4. #64
    Yuri's Avatar
    Yuri Guest

    Default TMB 100mm F/8

    RichA <none@none.com> wrote in message news:

    There is no Fluorite up there, the limits are coming for the given
    perfect computer design, from ability of the glass supplier to
    measure refractive indexes of used glasses.
    regards, Yuri

 

 
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