The BT-80-45
is a smaller
and lighter
version of
our highy-acclaimed 100mm
45° Binocular
Telescope .
It is the
least expensive
binocular
on the market
that offers
45° viewing
and 1.25" focusers.
Of course
the 45° 80mm
Binocular
Telescope
also has
Oberwerk's
signature broadband
multi-coatings on
every lens
surface,
including
the massive
porro prisms.
20x fully
multi-coated wide-angle
eyepieces
are included,
but because
of the industry-standard
1.25" helical
focusers,
your favorite
telescope
eyepieces
can be used
as well.
The same
fork mount
and hardwood
tripod (as
shown) that
comes standard
with the
BT-100-45
is available
as an option,
or use with
your own
favorite
mount (bottom-mount
plate is
tapped with
standard
3/8" threading).
Because accurate
collimation
is critical
at higher
magnifications,
every Oberwerk
binocular
is collimated
prior to
shipping-
so even at
100x, you'll
enjoy perfectly
merged images. 
Objective size |
80mm |
Magnification |
Your
choice
(any
1.25") |
Prism |
BAK4 |
Optic coating |
Fully
Broadband
Multi-coated |
Field of view |
20x-
3.0° |
Exit pupil diameter |
20x- 4mm |
Exit
pupil
distance |
20x- 16mm |
Minimum focus distance |
58-80mm |
Weight |
16 lbs., fork/tripod 22 lbs. |