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  1. #1
    Davoud's Avatar
    Davoud Guest

    Default How High the Eyepiece?



    My 8" SCT was on a fork mount when I bought my LeSueur Astro Pier. The
    height was perfect. Now that the OTA is on a Losmandy G-11 GEM the pier
    is too short -- the eyepiece is too low for comfort.

    If you have a GEM (not a fork), you are between 5'11" and 6'1" tall,
    and you are comfortable with your eyepiece height, I would like to know
    the distance from the floor or ground that you stand on while observing
    to the eyepiece cup on your 'scope with your mount in the CWD position,
    OTA pointing toward the NCP. If I'm lucky enough to get several answers
    I can use them as a starting point as I consider how high to extend my
    pier.

    Many thanks,

    David

    --
    usenet *at* davidillig dawt com

  2. #2
    Phil Wheeler's Avatar
    Phil Wheeler Guest

    Default How High the Eyepiece?

    Davoud wrote:

    Davoud,

    I'll have to do a measurement when next I'm set up for astrophotography
    ... maybe tonight if the sky is good.

    But have you considered an observing chair? Standing for very long gets
    tiring .. and most chairs are very adjustable, accommodating a wide
    range of EP height.

    Phil

  3. #3
    Stephen Paul's Avatar
    Stephen Paul Guest

    Default How High the Eyepiece?


    "Davoud" <star@sky.net> wrote in message
    news:230220061014405657%star@sky.net...

    FWIW, Losmandy sells a 12" extension. It's pretty much plug and play. It
    will take you only as long to install it, as it does to unmount and remount
    your mount.



  4. #4
    Davoud's Avatar
    Davoud Guest

    Default How High the Eyepiece?

    Davoud wrote:

    I failed to say that, for the numbers to be meaningful, you should have
    a 'scope similar to mine -- say an 8 or 10" SCT. The eyepiece height of
    a six-foot-long refractor in the specified position might not help me
    much. Your comfortable /observing/ eyepiece height for any 'scope would
    help, however.

    Thanks again,

    David

    --
    usenet *at* davidillig dawt com

  5. #5
    Davoud's Avatar
    Davoud Guest

    Default How High the Eyepiece?

    Davoud:

    Phil Wheeler:

    I am in your debt.


    I have a nice TeleVue Air Chair, and I will certainly factor that in my
    equation. The EP or camera is presently so low when the 'scope is close
    to its limit -- observing near the meridian, on either side -- that
    being on the floor in an uncomfortable position is the only way to use
    the 'scope, the piggyback refractor, and any attached cameras.
    Definitely sub-optimal for a geezer.

    Davoud

    --
    usenet *at* davidillig dawt com

  6. #6
    Phil Wheeler's Avatar
    Phil Wheeler Guest

    Default How High the Eyepiece?

    Davoud wrote:

    That does sound way too low, to this geezer too

    BTW .. I am 5'9" and use an 8" SCT (Nexstar8GPS).

    Phil

  7. #7
    Sam Wormley's Avatar
    Sam Wormley Guest

    Default How High the Eyepiece?

    Davoud wrote:

    I have *not* found a good solution. If observing many objects requires
    constantly fiddling with an adjustable chair... I find that more
    distracting than I'd like so...

    Is there a web cam that can be coupled with a laptop that would allow
    mealtime viewing on the computer screen... such that one can see as
    much detail and apparent angle of view as the dark adapted eye at a
    high quality eyepieces?


  8. #8
    Sam Wormley's Avatar
    Sam Wormley Guest

    Default How High the Eyepiece?

    Davoud wrote:

    I have *not* found a good solution. If observing many objects requires
    constantly fiddling with an adjustable chair... I find that more
    distracting than I'd like so...

    Is there a web cam that can be coupled with a laptop that would allow
    mealtime viewing on the computer screen... such that one can see as
    much detail and apparent angle of view as the dark adapted eye at a
    high quality eyepieces?


  9. #9
    Martin R. Howell's Avatar
    Martin R. Howell Guest

    Default How High the Eyepiece?

    On Thu, 23 Feb 2006 10:14:40 -0500, Davoud wrote:





    So this farmer is trying to get his stubborn donkey to pass into a barn
    which had a low clearance door. He pushed. He begged. He bribed with
    food. The result? He could get the donkey to walk forward but not lower
    his head to clear the door.

    One of the farmer's friends came by and observed the dilemma. "What is the
    problem here?," the friend asked.

    "I can't get this donkey through the barn's door," replied the perplexed
    owner of the animal. "He will walk forward, yet won't lower his head to
    clear the door which is about three inches too low for him."

    "That's easy," said the farmer's friend. "If he will walk forward then all
    you have to do is take that hoe over there in the corner and scrape out a
    little three inch deep trench in the dirt directly under the doorway."

    Pondering his friend's solution for a few seconds, the donkey's owner
    replied, "You don't seem to understand. . .it's not his legs that are too
    long - it is his neck!"


    END OF FABLE



    --Martin

  10. #10
    Davoud's Avatar
    Davoud Guest

    Default How High the Eyepiece?

    Martin R. Howell wrote:


    That was good, but when I first heard that it was told by a late,
    lamented, Irish (as in lived in Ireland all his life) friend of mine
    who was one of the world's best joke and fable tellers, and it was told
    as a Pat & Mike story. My friend really knew how to thicken his accent
    for the telling of these. The donkey wouldn't go under a bridge, and
    Mike came along as Pat was using his axe to chop two grooves in the
    bottom of the bridge, one for each of the donkey's ears.

    His tale about Mrs. Morphy and the vernition blinds was a classic, and
    the one about Pat & Mike flying to New York when three of four engines
    failed is great!

    Davoud

    --
    usenet *at* davidillig dawt com

 

 
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