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BOSMA

10X 50mm BK7 Super Wide Angle Binoculars Telescope

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US $65.99
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If you've always wanted a high performance but weren't ready to spend the big dollars leave it up to this Binoculars to deliver performance at a tremendous value. The Binoculars features fully multi-coated optics for excellent low light performance with a peak light transmission. Suffice to say, images are crisp, clear and bright - even in low light. Don't miss it!
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Product Description

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  • Specifications:

    • Large diameter, bright field of view, and clear vision
    • Multi-coated optics for superior light transmission and brightness
    • Made of high quality material, great choice for your outdoor use
    • Sharp multicoated optics for superb contrast and vivid color
    • Waterproof, antifog and shockproof are guaranteed to outperform any other binocular
    • Suitable for all kinds of harsh environment
    • Magnification: 10X
    • Objective Lens Diameter: 50mm
    • Focusing System: Middle transfer
    • Field of View(ft/1000yds): 367
    • Near Focus Distance: 9.0m
    • Exit Pupil Diameter: 4.0mm
    • Exit Pupil Distance: 12.7mm
    • Eye Cup Type: Folding
    • Coating: Blue coating
    • Material: BK7(Prism)

    Details:

    BOSMA BOSMA 10X 50mm BK7 Super Wide Angle Binoculars Telescope

    • Large diameter, bright field of view, and clear vision

    Binoculars Telescope

    • Suitable for all kinds of harsh environment

    How to Collimate Binoculars:

    When the series of lenses and prisms in each of a binoculars' barrels align perfectly, they produce a merged image and are said to be "collimated." Rough handling during shipping or use can knock binoculars out of collimation. Miscollimated binoculars produce fuzzy or overlapping images and possibly oval, cat's eye-shaped exit pupils, the miniature images you see in each eyepiece. This can lead to eyestrain, headaches and a degraded user experience. To correct miscollimation, manufacturers build adjustable prism tilt setscrews into many of their models. If prism tilt is excessive, however, or lenses are misaligned lenses, have a professional collimate your binoculars.

    Checking Horizontal Collimation:

    • Go outdoors in daylight and focus your binoculars on any large object with distinct horizontal and vertical edges, at a distance of about 100 yards
    • Relax your eyes. Alternately open and close them, about every second. You should see the binoculars' image move slightly to the left when opening the left eye and to the right when opening the right eye. This slight movement is normal and desirable
    • Adjust the prism tilt screws to restore collimation if you detect more than a slight amount of horizontal movement

    Checking Vertical Collimation:

    • In the daytime and outdoors, look at a distinct horizontal line, such as a roof line, gutter or fence rail
    • Slowly move the binoculars about 4 inches away from your eyes as you keep looking at the images in the eyepieces
    • Check that the horizontal feature you focused on remains an unbroken straight line--in other words, no part of it is displaced vertically
    • Adjust the prism tilt screws if you detect any vertical displacement

    Adjusting the Prism Tilt Screws:

    • Locate the two prism tilt setscrews just ahead of the eyepiece on each barrel. For rubber-armored models, pry up the rubber covering with your screwdriver to expose them. Be careful not to overstretch the rubber; you want it to snap back to its original position when done
    • Remove the protective glue from the setscrew's top and insert the screwdriver in the slot
    • Turn the right barrel's setscrew clockwise in very small increments to move the image in the right eyepiece to the left and down, counterclockwise for up and right
    • Turn the left barrel's setscrew in the same manner, clockwise or counterclockwise, to adjust the image's horizontal and vertical alignment in the left eyepiece
    • Adjust one or both setscrews as necessary, frequently checking progress using the horizontal and vertical collimation tests, until the two images merge horizontally and there is no vertical displacement

    Tips & Warnings:

    • The ultimate collimation test is to view a bright object, such as Jupiter, in the night sky. It should be well merged, with no double images. Properly collimated binoculars will also have nice, round exit pupils. If the exit pupils are oval, even with the images perfectly merged, collimation is not complete and your binoculars will need professional attention. Always register your binoculars' warranty
    • Binoculars with porro prisms have the two setscrews. Binoculars with roof prisms may have two additional setscrews, for a total of four, that need to be adjusted in sync with each other
    • Do not attempt to remove binoculars' objective lenses or other interior lenses to fix collimation problems. Lenses need to be removed, properly aligned and reinstalled by skilled technicians using specialized equipment

    Package Included:

    • 1 x Binoculars
    • 1 x Bag
    • 1 x Rope
    • 1 x Manual
    • 1 x Desiccant
    • 1 x Lens Cloth

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Average Customer Review:
  ( 8 Reviews)
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Troy

Bought this item on

09-15-2011

 
My love
00:00:00 09-15-2011
I had my eye on (no pun intended) a more expensive one, but this was well reviewed and now I know why. They work great.
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Valentina

Bought this item on

09-14-2011

 
High quality
00:00:00 09-14-2011
Great binoculars telescope. Excellent value, respectable name, small and light, good solid quality, adjusting stereo vision is quick and smooth and stays in place once found.
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Paddy

Bought this item on

09-14-2011

 
Great item
00:00:00 09-14-2011
This actually surprised me on the quality of the binocs for my 3 year old grandson. He loves birds and has had a great time using this. Perfect choice for the occasion. Good value!
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Yedda

Bought this item on

09-14-2011

 
Binocular - handy
00:00:00 09-14-2011
These are very handy and pretty good quality. The clarity may not be as good as some bigger high-end binoculars but for the price you can't beat them. They were great at the ball game and at the theater. They are small enough that you can take them almost everywhere.
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Judy

Bought this item on

09-13-2011

 
Great telescope
00:00:00 09-13-2011
The magnification was almost perfect for the binoculars telescope I was away from the stage. I hardly had to do any panning around. And the lenses are clear, and I was able to focus them perfectly. I never took them away from my face the whole show.
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Hubery

Bought this item on

09-13-2011

 
Love them
00:00:00 09-13-2011
I love how small super wide angle binoculars telescope are and easy to focus. It came with a nice case. If you are in the balcony of any performance you sure can get a closer look with these binoculars.
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Lilith

Bought this item on

09-13-2011

 
Great price
00:00:00 09-13-2011
They are really cheap and great quality.I recommend that you buy these 10X 50mm binoculars telescope.
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Riva

Bought this item on

09-13-2011

 
Happy with it
00:00:00 09-13-2011
I know very little about binoculars telescope. I know a lot about cameras, but have never owned a pair of binocs. I wanted to buy basic binoculars with a decent range for my photography nature trips. I wanted to survey a scene quickly with light binoculars and decided to get this one. It's cheap, had good reviews and a respectable name.
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