Results 1 to 7 of 7
  1. #1
    Edward's Avatar
    Edward Guest

    Default Pentax XL 40 vs University Optics MK70?



    Hello gang,
    I have the opportunity to pick up a Pentax 40mm XL. I currently own a UO
    MK70. Is the Pentax a step up or not? Scopes (for now) 76mm f8 apo, 150mm
    f12 MC, 8" f8 newt/dob.

    Thanks,
    Ed



  2. #2
    Gary Hand's Avatar
    Gary Hand Guest

    Default Pentax XL 40 vs University Optics MK70?

    The Pentax has higher contrast, better resolution, less field curvature, better
    light transmission, and is smaller.

    Gary






    Edward wrote:


    Attached Files Attached Files

  3. #3
    Edward's Avatar
    Edward Guest

    Default Pentax XL 40 vs University Optics MK70?


    "Gary Hand" <gary.s.hand@verizon.net> wrote in message
    news:3F8468C9.1E98DF5F@verizon.net...
    better


    Thanks, Gary. Sounds like one unequivocal vote for the Pentax.

    Ed



  4. #4
    Engineer Scott's Avatar
    Engineer Scott Guest

    Default Pentax XL 40 vs University Optics MK70?

    ..... and is more expensive.

    Scotty

    On Wed, 08 Oct 2003 19:45:36 GMT, Gary Hand <gary.s.hand@verizon.net>
    wrote:



  5. #5
    mjd's Avatar
    mjd Guest

    Default Pentax XL 40 vs University Optics MK70?

    Ok my advice, first two disclaimers:

    1. I am a big fan of Pen XL's. I have two.

    2. Gary knows more about eyepieces than I do.

    If you've got astro-money burning a hole in your pocket get the XL.
    You won't be dissapointed.

    That being said, you don't have fast scopes so field curvature is less
    of a problem. I've looked through MK-70's on F5 or F6 dobs and it was
    a very nice view.

    In conclusion. Pentax's can hold their own (or surpass) most
    eyepieces available. But the UO MK-70 is a damn fine eye piece as
    well.

    mjd









    Engineer Scott <scotty@starfleet.mil> wrote in message news:<c4igovcrif1appcvlo0pvda2ma51hi5p2h@4ax.com>. ..

  6. #6
    Lawrence Sayre's Avatar
    Lawrence Sayre Guest

    Default Pentax XL 40 vs University Optics MK70?

    On 12 Oct 2003 13:06:49 -0700, mjd <hockeyboy009@hotmail.com> wrote:


    I've owned both, and in faster Newts there is no contest. The 40mm Pentax
    XL beats the U/O 40mm MK-70 in every way possible, just as stated by Gary
    Hand. The Pentax XL's advantage is dramatically evident at the 2/3 out to
    extreme edge of field zone, where serious Konig astigmatism is the
    downfall of the U/O. For only about $30 more (at Adorama Camera at least,
    if not elsewhere as well), go for the Pentax.

    Lawrence Sayre

  7. #7
    Dave Mitsky's Avatar
    Dave Mitsky Guest

    Default Pentax XL 40 vs University Optics MK70?

    Lawrence Sayre <lsayre@neo.rr.com> wrote in message news:<oprwyatuossib3zq@news-server>...

    Edit


    Ditto.

    Dave Mitsky

 

 

Similar Threads

  1. Wanted: University Optics 4mm Abbe Ortho Eyepiece
    By johnemortensen in forum Astronomy Classifieds
    Replies: 1
    Last Post: 09-19-2010, 04:18 PM
  2. University Optics 32mm MK-80 - Performance on fast scope?
    By KLing Oar in forum Amateur Astronomy Forum
    Replies: 2
    Last Post: 01-11-2006, 06:59 AM
  3. University Optics web site?
    By Lawrence Sayre in forum Amateur Astronomy Forum
    Replies: 5
    Last Post: 06-14-2004, 08:21 PM
  4. University Optics 4mm Abbe ortho still for sale.
    By M Linnolt in forum Amateur Astronomy Forum
    Replies: 0
    Last Post: 08-20-2003, 11:48 PM
  5. University Optics 4mm Abbe Orthoscopic
    By Alan W. Craft in forum Amateur Astronomy Forum
    Replies: 10
    Last Post: 08-19-2003, 11:51 AM

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 02:07 PM.