Celestron UpClose G2 20×50 Porro Binoculars Instructions Manual

Celestron UpClose G2 20×50 Porro Binoculars

About Celestron
Celestron is a well-known American company specializing in the manufacturing of telescopes, binoculars, spotting scopes, and other optical instruments for astronomy and outdoor observation. The company was founded in 1960 by Tom Johnson, who had a passion for amateur astronomy and a vision to make quality telescopes accessible to enthusiasts and professionals alike.

Celestron initially gained recognition for its revolutionary Schmidt-Cassegrain telescopes (SCTs), which combined the compactness of a refractor with the versatility of a reflector. The SCT design allowed for powerful magnification while maintaining a relatively portable and user-friendly form factor. This innovation made Celestron telescopes popular among amateur astronomers and propelled the company to the forefront of the industry.

Instructions

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 the 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.
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. Alternatively, 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 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).
8. Warranty Your binocular has a 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: 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.

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