How to Align Binoculars so Both Sides Point Accurately in the Same Direction
How to align binoculars at home is all about checking whether there’s a serious misalignment and making the most out of your warranty.
If you examine your binocular externally, you may not notice that it’s misaligned. Unless the tubes are badly damaged, it’s difficult to tell.
But when you look through both eyepieces, and you feel as if the optics are pulling your eyes out of their sockets, then you know there’s a problem.
Our brains tend to compensate for the separation of identical images from both eyes.
The greater the separation, the more apparent the eye strain, nausea or headache. Strain results, because human eye muscles and brain try to merge the separate images into one.
Nothing is more annoying than a poorly aligned binocular.
When both telescopes making up the binocular aren’t precisely parallel, your eyes and brain would struggle to mate the two images of the same object. Double vision, dizziness, eye strain, nausea or headaches often result.
What Causes Loss of Alignment?
There are two main causes:
You’d need specialist equipment and skills to check whether both sides of your binocular are pointing in different directions slightly.
You can’t fix alignment problems at home.
But what you can do is detect extensive misalignment and take advantage of your warranty.
Let’s see how you can check whether your binocular’s optics aren’t parallel.
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Select a Distant Target and Look through Both Eyepieces
Our eyes tend to readjust angles, so you may not notice a slight deviation. You must trick your brain to maintain your viewing direction along both parallel lines.
What can I do About Misalignment?
Nothing you can do at this moment. You’d require professional help. But before you seek professional repair, make the most out of your warranty.
Some manufacturers can fix for you the misalignment problem for free or at a small fee. And that’s a good thing, given that the costs of professional repairs can surpass the price of your binocular.
In such a scenario, it’s not worth your money to repair while you can replace your binocular with a brand new one.
Unless you’ve a special attachment to your binocular, you can buy a binocular that’s in collimation rather than have an old one realigned.
Cheaper binoculars are more vulnerable to fall out of alignment. They use tension in the tilt screws hold on in position a spring clip, which can get out of alignment when you drop or knock your binocular.
Expensive binoculars are less susceptible to loss of collimation, because the manufacturer has machined them with tough, resistant and quality materials.
So, when you drop them, your instrument won’t lose collimation, because the materials are able to withstand shock. Even in cases where they fall out of alignment, the manufacture has willingness to repair.
When you talk of how to align binoculars, both sides must point precisely in the same direction. If the optics of both sides aren’t perfectly parallel, then the binocular is out of alignment.
Unless your binocular is damaged physically so can notice externally, it’s not easy to tell whether there’s misalignment. And more so if misalignment is slight. You’d require a very precise equipment to detect such unnoticeable loss of collimation.
Only when misalignment of optics is extensible is when you can notice. In such a case, you won’t require professional help. Nevertheless, you can do nothing about fixing misalignment other than to leave it to a professional hand.
Last update on 2019-07-19 at 16:07 / Affiliate links / Images from Amazon Product Advertising API