Adjusting Focus - Celestron 8x21binocular Manual

Roof PRism BinoculaRs • moDEl no. 71219
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.
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.
Roof Binocular

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.
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.
Rubber Eyecup
Diopter
adjustment
focuser
objective lens
Roof PRism BinoculaR
iPD
Eyepiece
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.
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!
Caution! Viewing the sun may cause permanent eye damage.
Do not view the sun with your binoculars or with the naked eye.
PRoBlEms oR REPaiR
If warranty problems arise or repairs are necessary, contact the
celestron technical support department if you live in the u.s.a. or
canada. if you live elsewhere, please contact the celestron dealer you
purchased the binoculars from or the Celestron distributor in your
country (listings on the celestron website).
WaRRanTy
your binocular has the limited lifetime Warranty for u.s.a. and
canadian customers. for complete details of eligibility and for
warranty information on customers in other countries visit the
celestron website: www.celestron.com
This product is designed and intended for use by those 14 years of
age and older.
Product design and specifications are subject to change without prior
notification.
jumEllEs à PRismE En ToiT • moDèlE n. 71219
nous vous remercions d'avoir fait l'acquisition de jumelles celestron et
nous espérons qu'elles vous procureront des années de satisfaction.
Pour utiliser vos jumelles au mieux, veuillez préalablement lire ce mode
d'emploi et ces consignes d'entretien.
RéglagE DE la DisTancE inTERPuPillaiRE (DiP)
étant donné que la distance entre les yeux (plus précisément, la
distance entre le centre des deux pupilles) varie d'une personne à
celestron
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