Question about Cabela's Astronomical (20x80) Binocular

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I'm trying to figure out what kind/model of cabelas binoculars I have. they are very large, say bak-4 prisms, 20x80 field 2.7

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These binoculars were made for astronomy or day viewing but are hard to hold steady by hand, best to use tripod...bak4 prisms means you should get a sharp image from edge to edge, in cheaper models with cheap prisms only the center of the field of view is sharp.......larry@reichinstruments.com

Posted on Jun 29, 2009

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Tip

Blurry Binoculars?


If you are getting a blurred or double image through your binoculars don't throw them away.
Hold them at arms length and look at the spot of light coming from the ocular lens. If they are shaped like cats eyes they out of collimation but in most cases this can be fixed.
The prisms need realigning. This is done by tilting the binocular's prisms by making tiny adjustments to screws found under the binocular's outer armour. You could try this your self with a 2mm screw driver and a bit of trial and error or you could contact us at www.binocular-repairs.com for an estimate.
We have over 30 years experience in this field and have the technology and the spare parts to mend most makes and models of binoculars and telescopes.
I hope I can be of assistance.
Regards,
T.E. LockAssoc. DirectorOpticalia Ltd

on Jul 14, 2011 | Bushnell Optics

1 Answer

I received new binoculars for Christmas Infinity elite ELX 10 x 42. There was no manual or information in the box. Do I need to call the store where they were purchased or can I download a manual?


I don't think they have instructions! Just adjust the eye cups and the focus dial on the top. Here's some info I found for you.


General Specifications:



magnification factor
10
objective size
42 mm
exit pupil
4.2mm
eye relief
15.0mm
close focus
2.0m, 6.6'
angular field of view
6.3°
linear field of view
330 feet at 1000 yards
relative brightness index (RBI)
not specified
coating
silver and phase coated
prism type
BaK-4
tripod adapted
no
twilight factor
not specified
weather protection
waterproof, fogproof, submersible to 1.5m for 3 minutes
classification
bird/nature, hiking/camping, hunting/wildlife


Physical Specifications
weight
706 g
dimensions
not specified
color
black



Additional Information
warranty
No fault lifetime Promaster warranty, Warranty information may change. Warranty information can also differ by region.
included accessories/ features
carrying strap, deluxe case

Jan 05, 2011 | Promaster Infinity Elite (10x42) Binocular

1 Answer

No apparent exterior damage but now my nikon's have "double vision" clear on each individual tube but doubled vision when veiwing normal. any suggestions?


The prisms have shifted inside of the binoculars. This is not an easy job as you have to make corrections to the angle of the prisms for leaning field and collimation. Two suggestions:
1. If they are under warranty take them to a repair agent.
2. If you want to do it yourself, there are instructions on the web about how to go about effecting a collimation. Too long to go into detail here.

Dec 29, 2009 | Nikon Action Binocular

1 Answer

I bought these for my husband. In trying them


Difficult to answer specifically without knowing the model. But binoculars are designed to view objects in the distance. They all have a limit as to how close they will focus based on the magnification and design. Objective lenses that are far apart such as on a porro prism binocular will not focus very close. The nature of the design of having the objectives further apart than the eyepieces doesn't allow it. When trying to focus too close the image will appear blurred and double. That is the nature of the design. 9 feet or 3 metres is considered quite close to focus a binocular and is usually for a model designed to do this such as a roof prism where the objective lens and the eye lenses are inline. A specialty binocular such as the Pentax Papilo will close focus to 50 centimeters. It has been designed so that the objective (large lenses) lenses converge.

Take into account when focusing that binoculars are also designed to compensate for differences in each eye. One of the eyepieces either right or left will adjust seperately. For binoculars with a center focus ring. First focus using the center ring with one eye covered. The eye that should be covered is the one that doesn't have the adjusting eyepiece. When the image is clear close the eye you have just used and leave the center focus alone. Focusing on the same spot look through the eyepiece that adjusts and turn the eyepiece ring until the image is clear. Now all you have to do is focus using the center ring only as the binoculars are adjusted for each eye.

Some binoculars do not have a center focus and each eye will adjust seperately.

Jul 29, 2009 | Optics

1 Answer

Where do i find the model number on my steiner binoculars?


The model of Steiner binoculars is on the plastic plates on the body. On earlier models mainly the green rubber covered military types is is molded at the front of the body near the objective lenses. These were called the Military/Marine and are of a different specification to the current Military/Marine. The original were a military bincocular which has more in common with the current Steiner Military. If you are after the serial number it is located on the front metal disc between the binocular barrels on a porro prism binocular. A porro is where the objective lenses are spaced further apart than the eyepieces. On a roof prism Steiner the serial number is located underneath between the two barrels on the hinge. Roof prisms are binoculars where the objective and the eyepieces are in line. If the serial number is a 10 digit number the 1st and 3rd numbers will give you the year of manufacture.
EG: 9042577777= 1994
If it is five or six digit number then it is the 1st and 2nd numbers
EG: 871245= 1987

Jul 24, 2009 | Steiner 8x30 Binocular

1 Answer

Prism came apart need assy instructions


you dont say what kind of bino it is....if its cheap model probably not worth repair and shipping charges.if i can be of further help call 5088331232...larry

Jun 22, 2009 | Tasco Essentials 165BCR (8x21MM) Binocular

1 Answer

I have a pair of glasses with a compass in the middle


These binoculars work on the Galilean principle in that they are just lenses. No prisms. These folding types were made as opera glasses. The addition of the compass is a gimmick added and such units were sold as cheap touring or travel binoculars. These types were popular in tourist locations. France at one point had a significant optical industry mainly producing opera and Galilean field glasses with the exception of Huet and Krauss who made prism binoculars.
An interesting but cheap collectable.

Jun 16, 2009 | West Marine Moorea Waterproof Binoculars

2 Answers

Cabelas Alaskan Guide 10X42


I agree with you on that! I have a feeling they are either Nikon or Leupold sourced. The body is alot like green ring leupold ive seen but the lenses have a magenta multicoating on a lens surface which ive seen on nikon. I'm in the process of looking for the maker of them myself as I need an objective lens. I'm going to call the Cabela's Cust SVC number and see what they say. I've heard the new Euro styled binoculars are made by Meopta.

Nov 25, 2007 | Cabela's Alaskan Guide Binoculars

2 Answers

Moisture


You have to open each side ( nikon travelite covers just unclip ) to get to the 4 prisms. Once opened to clean make sure you do not break the glue that holds down the prisms ( move the prisms in their seats and your alignment is out ). Clean with window cleaner and isopropanol to finish.

Aug 22, 2007 | Nikon Travelite V Binocular

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