CELESTRON Binoculars User Guide
- June 6, 2024
- Celestron
Table of Contents
SKYMASTER SERIES BINOCULARS
Thank you for purchasing Celestron binoculars! We hope they bring you many years of enjoyment. To maximize your experience with these binoculars, please read this instruction sheet on use and care prior to 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 the image through both eyes.
**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:** 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.
Hint: Eyeglasses for nearsightedness should be worn when using binoculars
as you may not be able to reach a sharp focus at infinity without them.
Note for high power zooms: The higher powers show greatly magnified
images for close-ups of objects when needed. However, keep in mind that the
lower powers give you brighter and
sharper images with the widest field of view. You may have to refocus when
changing from low to high powers.
Set the Rubber Eyecups
Leave the rubber eyecups up if you do not wear eyeglasses and fold them down
if you do wear eyeglasses to obtain the maximum field of view. When done
observing,
fold the eyecups up for storage.
Now you are ready to use your binoculars — enjoy the view!
Tripod Adaptability
Some 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 (best results come from heavy-duty tripods).
Mounting binoculars this way allows for added stability and comfort,
especially when viewing at high powers.
Some large aperture binoculars have a built-in tripod adapter as part of a
reinforced bar to give the binocular added stability, on these binoculars the
built-in tripod adapter attaches directly to a heavy-duty photographic/video
tripod.
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, however 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 hairbrush and/or utilize a can
of pressurized air before using the cleaning kit.
Alternately, you could use the Celestron LensPen made especially for cleaning
binoculars. Never attempt to clean your binocular internally or try to take
them apart!
Caution!
Viewing the sun may cause permanent eye damage. Do not view the sun with your
SkyMaster binoculars or even with the naked eye.
Problems or Repair
If warranty problems arise or repairs are necessary, contact Celestron’s customer service 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 Celestron Limited Lifetime Warranty for the U.S.A. and Canadian customers. For complete details of eligibility and for warranty information on customers in other countries visit the Celestron website.
celestron.com
2835 Columbia Street
Torrance, CA 90503 U.S.A.
Telephone: 1(800) 421-9649
©2018 Celestron All rights reserved. 10-18
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.
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>