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  1. #1
    Alan W. Craft's Avatar
    Alan W. Craft Guest

    Default University Optics 4mm Abbe Orthoscopic




    Don't shy away from it for fear of not having enough
    eye relief, or of a softer image due to its high magnification.

    Sure, the eye relief is short, but that's more than made up
    for by the sharpness and contrast of the views.

    Alan


  2. #2
    Jim's Avatar
    Jim Guest

    Default University Optics 4mm Abbe Orthoscopic

    I have an U.O. 5mm which is outstanding. Eye relief is good enough for me
    since I don't wear glasses when I observe. Most would consider ER a bit on
    the short side. It's managable enough though.

    I also have a U.O. 7mm, 9mm, 12.5mm and an 18mm. I prefer these orthos over
    my set of Plossls. The only Plossl I use is a 32mm GTO!

    The U.O. orthos seem to hold their value better too. Highly recommended!!

    "Alan W. Craft" <mauritius4@hotmail.com> wrote in message
    news:slksjvcet7ivtjpmlie4nbgbjrauvo6bbd@4ax.com...



  3. #3
    Jon Isaacs's Avatar
    Jon Isaacs Guest

    Default University Optics 4mm Abbe Orthoscopic

    >I have an U.O. 5mm which is outstanding. Eye relief is good enough for me

    I have a 4mm and a 7 mm. Eye relief is short enough that eye lashes etc easily
    contact the "eye" lens. Unfortunately the lens is so small that it is quite
    dificult to clean.

    Thats my experience...

    jon

  4. #4
    Alan W. Craft's Avatar
    Alan W. Craft Guest

    Default University Optics 4mm Abbe Orthoscopic

    On 16 Aug 2003 23:36:32 GMT, jonisaacs@aol.com (Jon Isaacs) ...reflected:


    Nothing a cotton swab dampened with Zeiss lens cleaner won't remedy.

    I take it that you would prefer an 8mm or 9mm in combination with a good
    barlow?

    I've been seriously considering a barlow, but with so many brands and types
    I've yet to settle upon one in particular. I know I'll get one eventually, as I'm
    looking forward to combine one with the several eyepieces I own and
    plan to buy in future.


    Alan


  5. #5
    Jon Isaacs's Avatar
    Jon Isaacs Guest

    Default University Optics 4mm Abbe Orthoscopic

    > Nothing a cotton swab dampened with Zeiss lens cleaner won't remedy.

    You might be surprised. Pretty tiny.


    A 6 mm with a decent FOV and a cleanable lens is preferable in my view. A
    barlow works too.


    The Ultima is a nice barlow, gets good reviews, Orion's Shorty Plus is supposed
    to be the same thing.

    Anyone with a Newt ought to have a barlow for collimation.

    jon

  6. #6
    Alan W. Craft's Avatar
    Alan W. Craft Guest

    Default University Optics 4mm Abbe Orthoscopic

    On 17 Aug 2003 12:42:35 GMT, jonisaacs@aol.com (Jon Isaacs) ...reflected:


    I have Celestron/Vixen's 6mm and 9mm orthos. I compared the Vixen
    9mm to the UO 9mm when looking at the Moon in partial phase...even with
    my untrained eye I noted a considerable difference in image quality, and with
    the UO having beaten the Vixen, of course.


    Alan

    "...Who commands the sun, and it does not rise;
    Who seals up the stars; Who alone stretched out
    the heavens, and trampled the waves of the sea;
    Who made the Bear and Orion, the Pleiades
    and the chambers of the south..."

    - Job 9:7-9 (RSVCE)


  7. #7
    Alan W. Craft's Avatar
    Alan W. Craft Guest

    Default University Optics 4mm Abbe Orthoscopic

    On Sun, 17 Aug 2003 20:03:21 GMT, "Brian A" <82whiskey@despammed.com> ...reflected:


    I had read how most seemed to prefer the more comfortable truncated
    style of the standards overall, so I went with them first. I almost went for
    the HD's but at the last second decided against them, and for their
    lack of said feature and their extra cost(however worth every last
    bit if not more, I'm sure.) I'll probably wind up with a few eventually,
    especially considering the quality of their "lesser" siblings.


    Alan


  8. #8
    Brian A's Avatar
    Brian A Guest

    Default University Optics 4mm Abbe Orthoscopic


    "Alan W. Craft" <mauritius4@hotmail.com> wrote in message
    news:tc30kv4rka9dmha0p6nb6h5s8mao0dsi2e@4ax.com...
    ....reflected:
    I
    for

    To be honest Alan, I've only looked through the standard UO orthos on one
    occasion a couple of years ago and I recall liking them very much
    particularly considering their price. I almost bit but that was back when I
    was saving all my pennies for my Radian phase. :-) When I decided to
    purchase a couple last month I went through the same thought process you
    mention above. I decided to go with the HD's and I certainly don't regret it
    but I may pick up a standard UO ortho or two just to compare them. Either
    way, they're both great EPs for the money.

    Clear Skies
    Brian A



  9. #9
    Rich McMahon's Avatar
    Rich McMahon Guest

    Default University Optics 4mm Abbe Orthoscopic

    Alan

    I have the whole set or UO orthos. Really a set of eyepieces at a good
    price.. I find I use the 5 or 6mm allot. However I have used the 4. I
    also have a good barlow so the 8mm works well barlowed.


    Rich


    On Sat, 16 Aug 2003 10:59:22 -0500, Alan W. Craft
    <mauritius4@hotmail.com> wrote:



  10. #10
    Brian A's Avatar
    Brian A Guest

    Default University Optics 4mm Abbe Orthoscopic

    "Rich McMahon" <rhmcus@yahoo.com> wrote in message
    news:3f43e804.14431050@news.us.dell.com...


    Hi Rich,
    I'm curious if you've ever had he opportunity to compare them with any of
    the new HD version orthos?

    Thanks
    Brian A



 

 
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