Oberwerk
25/40x100mm
Long-Range
Observation
Binocular 
Our flagship
product-
the legendary
25/40x100
Long-Range
Observation
Binocular,
with 100mm
semi-apochromat
triplet objectives
(each objective
is 4" in
diameter!),
and fully
broadband
multi-coated
optics. This
is an improved
version of
the binocular
that was
so favorably
reviewed
in the June
2000 issue
of Sky & Telescope magazine
as well as
the May 2003
issue of Astronomy magazine.
Rotating
ocular turrets
allow wide-angle
viewing at
25x and high-power
viewing at
40x. Apparent
field of
view is a
very wide
67°.
True giants,
these are
two feet
in length
and weigh
over 26 lbs!
For decades,
this Carl
Zeiss-designed
binocular
was available
only to the
East German
and Chinese
militaries.
Now the same
factories
are producing
these for
Oberwerk
Corporation
for the civilian
market. This
is the ultimate
optical instrument
for terrestrial
observation
as well as
astronomical
viewing. If
you've got
a home with
a view ,
enjoy it
to the utmost
with this
magnificent
instrument. Here's
an example of
what you
can expect
to see. This
binocular
is available
in two styles- "Classic" and "Contemporary".
The "Classic" (25/40x100M),
in traditional
black, has
the look
of a military
antique (but
is brand
new, not
refurbished).
The "Contemporary" (25/40x100A)
is finished
in an automotive-quality
champagne
color, and
has a modern
high-tech
appearance.
Choose the
style that
best matches
your decor.
The "Contemporary" also
differs from
the "Classic" with
a carrying
handle (removeable),
and provision
to mount
an optional
7x50mm finderscope
(as shown
at right).
Comes complete
with rock-solid
wooden tripod,
mount (which
is also a removable
table-top tripod),
and lightweight
nylon form-fitted
case (deluxe
aluminum case
optional). 
Objective size |
100mm (triplet semi-apo) |
Magnification |
25x and 40x (5-element Erfle) |
Prism |
BAK4 |
Optic coating |
Fully broadband multi-coated |
Field of view |
25x-
44m
at
1000m
(2.52°) |
Exit pupil diameter |
25x-
4mm |
Exit
pupil
distance |
25x-
14mm |
IPD (inter-pupil distance) range |
58-80mm |
Weight |
26.5 lbs, tripod 16 lbs. |
