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  1. #11
    JJK's Avatar
    JJK Guest

    Default Which APO 100mm Refractor to Buy?



    Apparently, we really do live in a litigious society. ~`8^)


    Larry Citro wrote:



  2. #12
    Alan W. Craft's Avatar
    Alan W. Craft Guest

    Default Which APO 100mm Refractor to Buy?

    On Sat, 03 Jan 2004 13:54:34 +0100, maflu <teddymaflu_nospam@fastmail.fm> ...reflected:


    The Vixen GP-DX is reputed to have a greater tracking accuracy
    over that of the Losmandy GM-8, and perhaps even over that of the
    GM-8's larger sibling, the G11. The GP-DX, however, comes without
    motors, let alone GOTO, and for $1400.


    That's precisely the cost of a Takahashi FS-102/Vixen GP-DX combo,
    and an excellent pairing, especially for those reluctant to spend more on
    mounts than optics, like myself; though, one shouldn't be too reluctant
    in that regard.

    For an astrograph, however, its f/8 ratio may be a bit slow. Astro-Physics's
    "Traveler" seems to be the ideal in this case with its f/6 ratio. Of course...


    The FS-102 comes with a 2.7" focusser, though you'll need to accessorise
    it to bring it to its full potential; but what versatility once done!

    Also, Vixen's "SkySensor 2000" is all the rage, but for considerable extra
    cost. I simply mounted a JMI RA motor only onto my GP-DX, and for $100.
    It tracks very well, but neutralises the RA's manual "slo-mo" control in the
    process.

    Alan

  3. #13
    Richard Crisp's Avatar
    Richard Crisp Guest

    Default Which APO 100mm Refractor to Buy?

    it is hard to beat a used TV101: good fast system (f/5.4), flat field, good
    imaging and visual scope. Used they run about $1700-$2000.


    "Anders Hansson" <nospamanhn@telia.com> wrote in message
    news:Xns94658B5BECB4Banhnteliacom@63.218.45.22...



  4. #14
    maflu's Avatar
    maflu Guest

    Default Which APO 100mm Refractor to Buy?

    What websites would you recommend to find a used one? Also, how does a
    TV101 compare to a Stellarvue SV105 do you think? Same quality?
    Thank you
    Cheers

    Richard Crisp wrote:

 

 
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