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  1. #1
    GoldfishPanda's Avatar
    GoldfishPanda Guest

    Default StarMax and Celestron 114 GOTO mount



    Has anyone sucessfully done this combination with the bader bracket on this
    site:

    http://www.alpineastro.com/mounting_...ccessories.htm

    I am worried about the weight of the scope and want to hear from someone who
    has done it....



  2. #2
    Thad Floryan's Avatar
    Thad Floryan Guest

    Default StarMax and Celestron 114 GOTO mount

    "GoldfishPanda" <abc@def.com> wrote in message news:<Fue0b.104582$3o3.7306203@bgtnsc05-news.ops.worldnet.att.net>...

    Did you not notice that one of the scopes featured at that site was a SM127?

    Did you not see what I posted Sunday re: my conversion at:

    http://www.thadlabs.com/ASTRO/Projec...27_mounted.jpg

    Did you not read the specifications of the StarMax 127 and note the OTA only
    weighs 5 pounds (and that the upper-limit stated by Baader Planetarium for
    their GT bracket is 10 pounds (twice that of the StarMax 127))? You can get
    the StarMax 127 manual in PDF form from Orion's website: www.telescope.com.
    CLick on "Customer Service", then on "Product Instructions".

  3. #3
    GoldfishPanda's Avatar
    GoldfishPanda Guest

    Default StarMax and Celestron 114 GOTO mount

    Yes, I did see that, but other people are telling me that I would need a
    scope less than 8 pounds, and the 127 is 8.6. I've gotten conflicting
    reports. I have seen the webpage pic, but wanted to hear from someone here
    who had done it...

    "Thad Floryan" <thad@thadlabs.com> wrote in message
    news:179a6eb9.0308190213.66e30785@posting.google.c om...
    news:<Fue0b.104582$3o3.7306203@bgtnsc05-news.ops.worldnet.att.net>...
    this
    who
    SM127?
    only
    get
    www.telescope.com.



  4. #4
    Jon Isaacs's Avatar
    Jon Isaacs Guest

    Default StarMax and Celestron 114 GOTO mount

    >Yes, I did see that, but other people are telling me that I would need a

    Weight is an important factor when considering a scope for a mount, but
    probably more important is the rotational moment of inertia, this is includes
    both the mass of the OTA and how it is distributed along the length.

    A long scope of equal mass will require a more robust mount than a shorter
    scope.

    Given that the StarMax is considerably shorter than the 114GT, it is likely you
    will have no problem.

    jon

  5. #5
    matt's Avatar
    matt Guest

    Default StarMax and Celestron 114 GOTO mount


    "Thad Floryan" <thad@thadlabs.com> wrote in message
    news:179a6eb9.0308190213.66e30785@posting.google.c om...
    news:<Fue0b.104582$3o3.7306203@bgtnsc05-news.ops.worldnet.att.net>...
    this
    who
    SM127?
    only
    get
    www.telescope.com.

    that is only partially correct. The Starmax 127 OTA weighs exactly 8.6
    pounds, not 5 pounds as you posted . 8.6 pounds is its specified weight and
    verified by weighing the one I have. The rest is true, Starmax 127 OTA's
    have been mounted with Baader brackets on Celestron GOTO mounts , apparently
    with no problems. I have mounted one on a Meade ds2000 mount with good
    results also.

    matt tudor






  6. #6
    Thad Floryan's Avatar
    Thad Floryan Guest

    Default StarMax and Celestron 114 GOTO mount

    jonisaacs@aol.com (Jon Isaacs) wrote in message news:<20030819080329.21183.00000184@mb-m10.aol.com>...

    And standing on a bathroom digital scale and holding the 114GT's original OTA
    and a StarMax 127, the 114's OTA is 5 pounds and the SM127 is 7 pounds.

    Note the Baader bracket was featured in S&T Feb. 2003 (IIRC) and also note in
    the Yahoo "OSAO" group people have claimed they've been operating the ST127
    on a 114GT mount for a long time.

    Additionally, given the SM127 is shorter than the 114GT's OTA, the SM127 can
    point to zenith with no mount problems (at least with the tripod I'm using)
    so all the "filter" limits can be removed (re: altitude).

    If you still have doubts then forget the 114GT and ease your mind.

  7. #7
    Robert Sheaffer's Avatar
    Robert Sheaffer Guest

    Default StarMax and Celestron 114 GOTO mount


    I use the Orion "Star Max" 127mm mounted on the C114 GOTO mount. I was
    worried about the weight, but because the Maksutov is so short and
    compact, it isn't a problem. The moment of inertia is small, it moves
    robustly. No problem tracking. The yoke doesn't quite close all the way,
    but ve haff vays uv making it hold.

    Of course, the C114 GOTO mount really isn't all that accurate anyway,
    but that's a different issue. However, unless you have big bucks to
    shell out for something fancy, it's the best you'll do on a limited
    budget.

    Robert Sheaffer - User name "Roberto" at the debunker's domain
    Skeptical to the Max!
    Visit the Debunker's Domain - http://www.debunker.com
    Resources Debunking All Manner of Bogus Claims
    Also: Skepticism / Astronomy / Opera / more

    Thad Floryan wrote:


    --
    Robert Sheaffer - User name "Roberto" at the debunker's domain
    Skeptical to the Max!
    Visit the Debunker's Domain - http://www.debunker.com
    Resources Debunking All Manner of Bogus Claims
    Also: Skepticism / Astronomy / Opera / more


  8. #8
    Thad Floryan's Avatar
    Thad Floryan Guest

    Default StarMax and Celestron 114 GOTO mount

    Robert Sheaffer <CallMe"Roberto"@debunker.com> wrote in message news:<uFz1b.843$936.40612172@newssvr13.news.prodig y.com>...

    Heh heh! It actually works quite well as I posted last weekend:

    http://www.thadlabs.com/ASTRO/Projec...27_mounted.jpg
    http://www.thadlabs.com/ASTRO/Projec...d/new_bolt.jpg

    but I ended up getting the Baader Planetarium brackets Wednesday from Alpine
    Astro at URL:

    http://www.alpineastro.com/

    because I wasn't comfortable with the plastic half-cradle and wanted to use
    the same type of rings I have on another mount for the SM127. I'll put up a
    picture of the Baader Bracket and SM127 soon but I still need to isolate a
    a tracking problem with the 114GT head. Allegedly (per a response on one of
    the Yahoo groups) the tracking issue is a function of alignment, and I really
    don't like the meagre selection of alignment stars available in the 114GT
    (which includes Polaris, interestingly, which was explictly omitted by Meade
    for the LX200 Classic).


    Very true; the 114GT is not an LX200 Classic (which uses the MC68000 family
    for its computations, contrasted with the 68HC11 used in the LX200GPS; why
    Meade "downgraded" the main CPU I'll never understand (unless it was cost)).

    The encoder resolution specified for the 114GT is 20 arcseconds, and I'd be
    happy if they'd "GOTO" within several arcminutes (but they don't (yet :-)).
    It's a shame the Meade #497 Autostar won't "drive" the 114GT head -- that'd
    be a killer low-cost small-OTA mount system.

    I simply wanted several additional GOTO mounts to complement my "main" scopes
    and shorten the queues at them (esp. for the 27th when there'll be a l-o-t of
    people in my backyard -- moreso than for my annual Thanksgiving BBQ and Star
    Parties).

 

 

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