Re: Nikon Ep's...
thanks for your answers... I think I'm gonna think about it....Nikon
or Zeiss, I shall take one! I used to have a Clavé 25mm but I had to
sell him a few months ago.... Talking about both Nikon/Zeiss, can I
expect a well corrected field in my TMB 100/800 ?
- this 25 mm Zeiss eyepiece is a bit mystic. It have 42° FOV, but our critical firned matthias made a test. Re opened the fieldstop from 18 mm up to 23 mm and found it still have same contrast same edge performance and now with opened fieldstop it have 54° FOV
----- Original Message -----
Sent: Friday, November 01, 2002 4:28 AM
Subject: [tmboptical] Re: Nikon Ep's...
--- In tmboptical@y..., "j_bretes" <j_bretes@h...> wrote:
> Hi all,
> has anyone tried the 25 mm Nikon available from Markus on a 4" TMB ?
> If so, let me know, because I'm really interested in this ep!
The 25 mm Nikon is excellent, but better yet is the 25
mm Zeiss Aspherical 3-element eyepiece. I have compared
this eyepiece to the vaunted 25 mm Zeiss Abbe eyepiece,
and in every performance parameter (except field size -
42 vs. 48 degrees) the 3-element Zeiss was superior. The
price is a steal, and Markus sells them. If a small field
is not a problem, this is the best 25mm eyepiece made. I
just wish they made this design in 9mm and under focal
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