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www.CELESTRON.com
BINOCULARS
Thank you for purchasing Celestron binoculars and we hope
you will have many years of pleasure with them. To maximize your
enjoyment of the binoculars, please read these instructions on
use and care before using them.
1. Adjusting the Interpupillary Distance (IPD) Since the distance between
the eyes (specifically, the distance between the centers of
the pupils) varies among individuals, the two eyepieces of the
binoculars must be correctly aligned (adjusted). This is called
adjusting the interpupillary distance. To adjust this distance,
lift the binoculars up to your eyes (using both hands) and look
through them at an object in the distance. Move the two halves
of the binoculars about the hinge until you see one clear circle
of image through both eyes.
2. Adjusting Focus
Since most people have a variance of vision
from their left eye to their right eye, you must adjust the focusing
system. Use the following steps to achieve focus: (1) Close your
right eye and look through the left side of the binoculars with
your left eye at the subject matter. Rotate the center focusing
wheel until the image appears in sharp focus; (2) Close your
left eye and look through the right eyepiece (called the diopter).
Rotate the right eyepiece until the image appears in sharp
focus; (3) Now look through both eyepieces with both eyes
open. Since you’ve already adjusted the right eyepiece, use
only the center focusing wheel to refocus on a new object at a
different distance.
Note: If your binocular has a diopter indicator, please note
the setting for later use for faster focus adjustment.
For Zoom Binocular models – to increase or decrease power, move
the zoom lever. To adjust focus you first zoom the binoculars to
the highest power and then adjust the focusing system as above.
Then, when zooming in and out your binoculars will be in focus.
Hint:
Eyeglasses worn for nearsightedness should be worn
when using binoculars as you may not be able to reach a sharp
focus at infinity without them.
3. Set the Rubber Eyecups Leave the Rubber Eyecups up if you
do not wear eyeglasses but fold them down if you do wear
eyeglasses to obtain the maximum field of view. When done
observing, fold the eyecups up for storage.
4. Tripod Adaptability Porro Prism binoculars feature a
built-in tripod adapter fitting. On these models, a threaded screw
hole is underneath a cap. To attach a binocular tripod adapter,
remove the cap and then thread the screw from the binocular
tripod adapter into the threaded screw hole. The other end of
the binocular tripod adapter attaches to a photographic tripod.
Mounting binoculars this way allows for added stability and
comfort especially when viewing at high powers.
ROOF PRISM BINOCULAR
Diopter
Adjustment
Objective Lens
Eyepiece
Focuser
Rubber Eyecup
PORRO PRISM BINOCULAR
Diopter
Adjustment
Objective
Lens
Tripod
Adapter
Thread
Zoom Lever
(for Zoom Models)
Eyepiece
Focuser
Rubber
Eyecup
5. Care and Cleaning Binoculars do not need routine maintenance
other than making sure that the objective lenses and eyepieces
are kept clean. If repairs become necessary, they should be serviced
by the manufacturer or a qualified binocular repair company.
Collimation (optical alignment) is the biggest concern with
binoculars. If your binoculars are roughly handled or dropped,
there is a good chance that the collimation will be out and
they should be serviced. Dirty objectives and/or eyepieces
mean less light transmission and loss of brightness as well as
unsharp images. Keep your optics clean ! When not using your
binoculars store them in the case provided. Avoid touching
the glass surfaces but if fingerprints (which contain mild acid)
get on them, they should be cleaned as soon as possible to
avoid damaging the coatings. To clean the optical surfaces, we
recommend a lens/optics cleaning kit available at most photo
or optical shops and follow the instructions provided closely. If
you have a lot of dust or dirt accumulated, brush it off gently
with a camel’s hair brush and/or utilize a can of pressurized
air before using the cleaning kit. Alternately, you could use the
Celestron LensPen (# 93575) made especially for cleaning
binoculars. Never attempt to clean your binoculars internally or
try to take them apart!
6. Caution! Viewing the sun may cause permanent eye damage.
Do not view the sun with your binoculars or with the naked eye.
7. Problems or Repair If warranty problems arise or repairs are
IPD Scale
IPD
Porro Binocular
Roof Binocular
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