Page 1 of 3 123 LastLast
Results 1 to 10 of 27
  1. #1
    Shneor Sherman's Avatar
    Shneor Sherman Guest

    Default 2" 90° Apparent Field Eyepieces Announced



    I just looked at the Burgess Optical web site (burgessoptical.com) and
    noticed the announcement of "Hyper Wide Angle" eyepieces, with a 90°
    apparent field. There's a 29mm and well as a number of lesser focal
    length eyepieces. No photos or prices yet, or any hint of the lens
    design.

    My experience with Burgess has been excellent value for the money. But
    I do wonder about the optical characteristics of this eyepiece.

    Clear skies,
    Shneor Sherman

  2. #2
    Jon Isaacs's Avatar
    Jon Isaacs Guest

    Default 2" 90° Apparent Field Eyepieces Announced

    >My experience with Burgess has been excellent value for the money. But

    Probably best to take the wait and see attitude if something isn't currently
    yet available. Burgess Optical has been somewhat optimistic in the past about
    delivery dates...

    Jon


  3. #3
    Shneor Sherman's Avatar
    Shneor Sherman Guest

    Default 2" 90° Apparent Field Eyepieces Announced

    jonisaacs@aol.com (Jon Isaacs) wrote in message news:<20040629175818.11708.00000633@mb-m11.aol.com>...

    Here's some more info from Bill Burgess: It's a 7-element design, all
    ED glass,"broadband multicoatings on all air-to-glass surfaces", and
    pinpoint stars to the edge down to f/3.5. Availability is at least 60
    days out.

    The part about pinpoint stars to the edge of a 90° apparent field 29mm
    eyepiece sounds very attractive. Maybe some of our eyepiece design
    mavens can tell us why this is either impossible or comes at the price
    of field curvature, loss of contrast or some other desirable optical
    characteristic. Or not.

    Clear skies,
    Shneor Sherman

  4. #4
    Dan McShane's Avatar
    Dan McShane Guest

    Default 2" 90° Apparent Field Eyepieces Announced

    Jon,

    Do you have any experiece with the Burgess 40mm 72 Degree 2" (SWA40MM)
    http://knightcontrol.freeservers.com/BO_Eyes_SWA.htm

    thanks,
    Dan

    Jon Isaacs <jonisaacs@aol.com> wrote in message
    news:20040629175818.11708.00000633@mb-m11.aol.com...
    currently
    about


    ---
    Outgoing mail is certified Virus Free.
    Checked by AVG anti-virus system (http://www.grisoft.com).
    Version: 6.0.711 / Virus Database: 467 - Release Date: 6/25/04



  5. #5
    Dan McShane's Avatar
    Dan McShane Guest

    Default 2" 90° Apparent Field Eyepieces Announced

    Oops, scratch that, didn`t see the "coming soon" banner.

    Dan

    Dan McShane <dgmoptics@erols.com> wrote in message
    news:40e2dcbc$0$23301$61fed72c@news.rcn.com...


    ---
    Outgoing mail is certified Virus Free.
    Checked by AVG anti-virus system (http://www.grisoft.com).
    Version: 6.0.711 / Virus Database: 467 - Release Date: 6/25/04



  6. #6
    Mitch Alsup's Avatar
    Mitch Alsup Guest

    Default 2" 90° Apparent Field Eyepieces Announced

    jonisaacs@aol.com (Jon Isaacs) wrote in message news:<20040629175818.11708.00000633@mb-m11.aol.com>...

    I have a 30 mm Ziess with an 88 d FOV, and there is a 30 mm Lietz with
    either an 86 dFOV or an 88 dFOV. These will pop up from time to time
    on the various auction houses on the web, and are of known quality
    (e.g. excellent) optically.

  7. #7
    CLT's Avatar
    CLT Guest

    Default 2" 90° Apparent Field Eyepieces Announced

    > Here's some more info from Bill Burgess: It's a 7-element design,

    ****> all ED glass,****

    ?????


    I'd have to see this first.

    Clear Skies

    Chuck Taylor
    Do you observe the moon?
    Try http://groups.yahoo.com/group/lunar-observing/
    And the Lunar Picture of the Day http://www.lpod.org/
    ************************************




  8. #8
    Chris1011's Avatar
    Chris1011 Guest

    Default 2" 90° Apparent Field Eyepieces Announced

    >>Here's some more info from Bill Burgess: It's a 7-element design, all
    ED glass>>

    What a load of crap! All ED my foot. If ED glass was ever used in eyepieces
    they would have narrow fields with very poor off-axis corrections.

    Roland Christen

  9. #9
    Chris1011's Avatar
    Chris1011 Guest

    Default 2" 90° Apparent Field Eyepieces Announced



    What a bunch of crap. Wow! he must think the amateur community is gullible!

    Roland Christen

  10. #10
    Richard's Avatar
    Richard Guest

    Default 2" 90° Apparent Field Eyepieces Announced

    shneor@my-deja.com (Shneor Sherman) wrote in message news:<9dedb1fb.0406300643.2e10efd6@posting.google. com>...

    So, all you have to wonder about are:
    -distortion
    -lateral colour
    Like most widefields.
    -Rich

    -Rich

 

 
Page 1 of 3 123 LastLast

Similar Threads

  1. what is the largest apparent FoV in a 1.25" eyepiece
    By smokesha in forum Telescope Eyepieces Forum
    Replies: 5
    Last Post: 10-18-2009, 09:26 PM
  2. Telescope Eyepieces Apparent Field of View
    By admin in forum Telescope Eyepieces Forum
    Replies: 1
    Last Post: 03-04-2009, 12:04 PM
  3. Apparent field of view of an eyepiece
    By Kevin in forum Amateur Astronomy Forum
    Replies: 4
    Last Post: 01-12-2007, 01:28 AM
  4. SCT, FR and wide field 2" eyepieces
    By szaki in forum Amateur Astronomy Forum
    Replies: 4
    Last Post: 08-03-2005, 06:31 PM
  5. AFOV (Apparent Field of View)
    By Sean O'Dwyer in forum General Astronomy Forum
    Replies: 2
    Last Post: 07-07-2004, 03:10 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 11:09 PM.