The ghost image could be created by the speed of the object, the extra light from the sun reflecting on any internal metal parts of the binoculars which can be coated to reduce glare reflection.
A strong magnification, such as 10x, can be affected by handshake and could possibly create ghost images or optic flare.
Always check focus and adjust the center wheel first. Make allowance for distance, speed and light. A good cleaning may also be in order.
Preventing a double image from showing up on your binoculars could be as simple as bringing the barrels or tubes closer together if the binoculars are hinged. Also, it could be a focus problem due to the barrels being out of alignment which can be fixed in most cases.
Some binoculars just need the old fashioned remedy of closing one eye to see one of the image and other binoculars have such high magnification that seeing two of the same image through each barrel is normal.
If you are a beginner to the binocular world keep in mind there are two major types of internal designs to Binoculars:
A process that has been around for a century. The binoculars house 2 prisms which lengthen the light path. This process delivers an exceptional binocular view quality at an affordable price.
This is a more compact design with roof shaped prisms that move the light along. This design is usually priced higher. Though, honestly in most cases you get the same quality in Porro Prisim binoculars.
Some people might want to charge you more based only on this newer prism feature. However, you should really take all the binocular features into consideration before you buy anything. So if you are unsure of the meanings behind these features surf to Tasco.com. Not only do they provide a listing of their Tasco Binoculars, they also have a glossary of common binocular terms and shopping tips.
Binocular objective lens treatments all pretty much have the same goals. To create clearer, brighter images while keeping out the harmful rays of the sun. Some manufacturers accomplish this better than others. Tasco is one company that offers a quality coating that you won't find on any other binocular lens. It is called --- Rubicon®. This process is essentially14 layers of multi-coating on the objective lens. It has a ruby-red tint that removes red light to reduce glare in bright light situations. Again, you can only find this coating on Tasco Binoculars.
Moments are just what they are, moments. Sometimes the most incredible natural wonders happen in the blink of an eye. For this reason you might want to look into binoculars that can offer a quick clear view. The Tasco Sonoma Compact Zoom series can do just that. They offer Zip® focus. A feature that allows you to quickly focus on an object with just a half-turn of the focus wheel.