BARSKA AB11190 Encounter Jumbo Binocular - Manual (Page 3)

Encounter 16x, 20x, 25x70mm Binocular
Telescope Operating Instructions
3.
BARSKA 1721 Wright Avenue La Verne, CA 91750 Tel: 909.445.8168 Fax: 909.445.8169
www.barska.com
Figure 5.
Diopter Scale
Figure 6.
5. FOCUSING THE ENCOUNTER
BINOCULAR TELESCOPE
The BARSKA Encounter Binocular Telescope
eyepieces can be individually focused and
help maintain optical alignment (Fig.5).
To focus the binocular:
1. During daylight, pick
a stationary distant
object to view such
as a street sign. At
night, the best focus
will be achieved by
focusing on the Moon or a bright star.
2. Cover your right eye (or cover the right
objective lens of the binocular) and focus
the left eyepiece by slowly rotating the
rubber grip ring on the eyepiece holder
until the image appears clearest. To focus
the right eyepiece, repeat this procedure
but cover your left eye or the left
objective lens of the binocular. The
binocular should now be in focus.
3. If you want to view an object at a
different distance, re-focusing of both
eyepieces is required.
4. Changing the eyepieces may also require
some slight focus adjustments.
Astronomical Observation:
All objects will always appear focused at the
infinity focus point. This means that you only
need to focus the binoculars once per
viewing session. This also means that you
can take note of the diopter scale setting for
each eyepiece when
focused on an
astronomical object and
return to those settings
when observing another
night (Fig.6). Since
everyone's eyes focus
on images slightly
differently, other observers who are using
the binoculars will need to re-focus the
binoculars and adjust them to their own
vision and interpupillary distance.
6. FOLD-DOWN EYEGUARDS
The Encounter Binocular Telescope features
fold-down eyeguards on the eyepieces.
The eyeguards are usually left
in the up position for use
without eyeglasses as this
helps prevent glare from
entering between the eye
and eyepiece.
To use the binoculars with eyeglasses:
1. Fold the eyeguards down in order to get
your eyes close enough to the eyepieces
to see the entire field of view.
7. CLEANING AND CARE OF BINOCULAR
To protect your binocular, please follow these
important instructions:
Outside Surface
1. The Encounter Binocular Telescope is
nitrogen-purged and sealed to be
waterproof and internally fogproof.
However, DO NOT immerse the binocular
in water under any circumstances.
2. If the binocular becomes wet with fresh
water, blot it dry with a clean dry cloth.
3. If the binocular becomes wet with salt
water, the surface should be rinsed off
completely and the binocular blotted dry
with a clean cloth.
4. If the binocular body becomes dirty, it
can be cleaned with warm water and a dry
cloth.
5. If extremely dirty or oily, clean the body
with a dilute solution of warm water and
mild soap on a cloth, then rinse with clean
water and blot dry.
Lens Surface
The lens surfaces of the Encounter Binocular
Telescope are coated with anti-reflection
multi-coatings than can be easily damaged
with careless handling. To protect the
binocular's lenses, please follow these
recommendations:
1. DO NOT CLEAN LENS SURFACE WITH
SOAP AND WATER!
Figure 7.