Results 1 to 10 of 10
  1. #1
    Ed T's Avatar
    Ed T Guest

    Default Upgrading an EQ Mount?



    I've been an alt/az kinda guy these past years but I'm looking to buy an EQ
    for my 5" refractor as I find I enjoy staring at planets through it. I've
    got a line on an older Nikon EQ like this one:
    <http://www.hi-net.zaq.ne.jp/yoshio/Telescope/catalog/Nikon10cm/Nikon10cm1.htm>
    The one I'm looking at is a bit of of a project in itself, rust and
    what-not.

    This comes at a time when I'm getting serious about putting up a small back
    yard observatory with a permanent pier. It seems to be the right tool for
    the job and the price is right but I wonder about replacing the drive motors
    when they ultimately wear out (forget about Nikon) and also upgrading to
    go-to and also higher slew rates.

    So, ye cognocenti, what is available? Please go ahead and reference brands,
    parts, vendors, websites - I need all the help I can get!

    Specifications: It comes with two 5.5 kg counter weight (screw type). Load
    capacity is 18kg. The worm wheels (RA and DEC) have 180 teeth. The worm
    wheel diameter is 90 mm. The mount weight is 26kg (including the two
    weights). The pier weight is 26.5kg. The OTA is an FS-128.

    Thank you - Ed T.




  2. #2
    Ed T's Avatar
    Ed T Guest

    Default Upgrading an EQ Mount?


    "Ed T" <reply@thegroup.thx> wrote in message
    news:F%MXd.4687$oO4.3287@newsread3.news.pas.earthl ink.net...

    oops! Try this:

    http://www.hi-net.zaq.ne.jp/yoshio/T.../Nikon10cm.htm

    <http://www.hi-net.zaq.ne.jp/yoshio/Telescope/catalog/Nikon10cm/Nikon10cm.htm>



  3. #3
    AFM@andersonsoftware.ca's Avatar
    AFM@andersonsoftware.ca Guest

    Default Upgrading an EQ Mount?


    Ed T wrote:
    an EQ
    I've
    <http://www.hi-net.zaq.ne.jp/yoshio/Telescope/catalog/Nikon10cm/Nikon10cm1.htm>
    small back
    tool for
    motors
    to
    brands,
    Load
    worm


    The losmandy G11 is probably best suited to what you want to do. I've
    had no personal experience with him but I hear John Davis also makes
    good equipment (http://www.gemini-instruments.com/).

    Ian Anderson
    www.customopticalsystems.com


  4. #4
    Ed T's Avatar
    Ed T Guest

    Default Upgrading an EQ Mount?


    <AFM@andersonsoftware.ca> wrote in message

    Ian,

    Thanks for the reply. I've been looking at the G-11 and the EM-200 as well.
    What makes this mount more interesting is the price and the pier. I'm just
    concerned that if/when the motors give out it'll be a white elephant.

    Ed T.



  5. #5
    PR Hobson's Avatar
    PR Hobson Guest

    Default Upgrading an EQ Mount?

    I sought some advice from this group a few years ago. Ron Wodaski was
    most helpful and suggested an EM200 (or EM10). I managed to buy a
    second-hand EM200 with large wood tripod and have been extremely pleased
    with it, particularly with regard to rigidity and the smooth tracking in
    RA. I use it with a 20cm F10 SCT. In the UK at least the cost of a G-11
    is rather higher than one pays in the USA, and I think that my
    second-hand EM200 was similar to a new G-11. For me (reading numerous
    reviews plus Mr Wodaski's advice) the decision was easy.

    Dr P Hobson, London UK
    <SNIP>

  6. #6
    jameswilliamjohnson@yahoo.com's Avatar
    jameswilliamjohnson@yahoo.com Guest

    Default Upgrading an EQ Mount?

    I second the vote for the Losmandy G-11. Great mount at an affordable
    price. I use it for my 6" Mak-Cass and 127mm F/8 Burgess achro. It
    seems to be a good match with the 127mm. However, even with the legs
    fully extended, the eyepiece is too low for viewing near zenith so I'm
    considering a pier extension. If you get a smaller mount, you'll need a
    really solid tripod. I personally consider the G-11 as the minimum for
    a 5 - 6" refractor.

    Jim Johnson


  7. #7
    AFM@andersonsoftware.ca's Avatar
    AFM@andersonsoftware.ca Guest

    Default Upgrading an EQ Mount?


    Ed T wrote:
    I've
    makes
    as well.
    I'm just
    Losmandy's Gemini goto system is the best system for the money. If
    the motors on the Nikon burn out I doubt you will be able to find new
    ones due to their rarity in North America. If that happens it will not
    be impossible to have custom replacements made but they will cost more
    than the Gemini. Ultimately it is your call but for an observatory in
    the long run the $3200 G11 is a better investment considering the Goto
    and loading capacity.

    Ian Anderson


  8. #8
    Ed T's Avatar
    Ed T Guest

    Default Upgrading an EQ Mount?


    <AFM@andersonsoftware.ca> wrote in message


    You are correct, the motors are impossible to find. The G11 is likely the
    rational choice. I'm trying to indulge my that-old-mount-is-fantatic
    irrationalism (a weakness of mine) without suffering serious consequence.

    Ed T.



  9. #9
    Havriliak@aol.com's Avatar
    Havriliak@aol.com Guest

    Default Upgrading an EQ Mount?


    Ed T wrote:
    an EQ
    I've
    Buy a new set of motors in advance. This will assure you of
    operation after a breakdown. In otherwords kalways keep a set of spare
    motors on hand.


    <http://www.hi-net.zaq.ne.jp/yoshio/Telescope/catalog/Nikon10cm/Nikon10cm1.htm>
    small back
    tool for
    motors
    to
    brands,
    Load
    worm



  10. #10
    AFM@andersonsoftware.ca's Avatar
    AFM@andersonsoftware.ca Guest

    Default Upgrading an EQ Mount?


    Ed T wrote:
    new
    not
    more
    in
    Goto
    likely the
    that-old-mount-is-fantatic
    consequence.

    I have no personal experience with Nikon product but from what I hear
    the quality is equal to Takahashi. The mount you described would likely
    work fairly well. And if you still want "something different" you
    could have astrometric customize their sky walker drives for it. The
    only thing that would concern me is the rust. If it is just cosmetic it
    is fine but if there is any damage to the moving parts (gears,
    bearings, etc) it is irreparable. The G11 still has its quirks so you
    should seriously look at all your options.

    Ian Anderson
    www.customopticalsystems.com


 

 

Similar Threads

  1. Sources for upgrading mount/tripod?
    By Duke in forum Amateur Astronomy Forum
    Replies: 7
    Last Post: 05-15-2005, 01:29 PM
  2. Upgrading from C8
    By Stephen Paul in forum Amateur Astronomy Forum
    Replies: 1
    Last Post: 09-08-2003, 11:06 PM
  3. Upgrading from C8
    By Florian in forum Amateur Astronomy Forum
    Replies: 1
    Last Post: 09-06-2003, 10:34 PM
  4. Upgrading from C8
    By Al in forum Amateur Astronomy Forum
    Replies: 0
    Last Post: 09-06-2003, 07:42 PM
  5. Upgrading from C8
    By Phil Wheeler in forum Amateur Astronomy Forum
    Replies: 0
    Last Post: 09-06-2003, 07:23 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Powered by vBulletin® Version 4.2.0
Powered by vBulletin®
All times are GMT. The time now is 04:41 AM.