(Last Updated On: February 6, 2020)

So if you have decided to get the most amazing Barlow lens for your telescope, Congratulations! That is an excellent step for you to enjoy watching planetary images. The next step is to purchase the Barlow lens that is of quality and is effective. First, you should understand the Barlow lens and how they work. The article gives clear information so that your first Barlow lens is the best type for you.

Best Barlow lens

Barlow Lens FAQ & Buyer’s Guide

Q- What is a Barlow Lens?

For all those who love astronomy, we focus on getting the best telescope available to get more explicit pictures while observing the universe. Fortunately, the Barlow lens drastically improves the magnification without spending much money.

Barlow lens can be described as an optical device which is commonly placed in between the focuser and the eyepiece. It has a negative glass inside that increases the focal length artificially.

Barlow lens is made up of lens elements which are employed to decrease chromatic aberration and usually have 2X magnification. Barlow lens was named after Peter Barlow, who invented them in 1776.

Q- What does Barlow lens do?

You might need to know how Barlow lens work and why they are recommended when using a telescope, well, the Barlow lens aids in magnification of the telescope. Below are some of the awesome things that the Barlow lens does.

  1. It doubles the eyepiece selection. Barlow lens multiplies the magnification of the eyepieces in a telescope, thus giving an excellent way of increasing your magnification experience.
  2. The Barlow lens is used to reach high magnification. If you are using a short focal length telescope, Barlow lens will fix magnification power. Most inexpensive scopes have very tiny eye lenses, thus making it hard to view nature. By the use of the Barlow lens, they will allow you to a high reach magnification.
  3. The Barlow lens is used to increase the focal ratio of the telescope. For example, if you are using a Barlow lens with 2X magnification power to a telescope with a focal length of 2500mm, the Barlow lens increases the eyepiece power by two. Increase in focal ratio helps a telescope to increase the exposure.
  4. The Barlow lens gives relief to the eyes. Barlow lens provides comfort to the eyes. Although most eyepieces have eye relief feature, most telescope users find it uncomfortable to use telescopes with an eye relief of less than 12mm, thus the Barlow lens help to retain the original eye relief.
  5. The Barlow lens improves filter performance. Barlow lens has an interference filter that helps a telescope with longer focal ratios.


Q- How does a Barlow lens work?

How does a Barlow lens work?

Source – http://findascope.com/glossary.html

Barlow lens primarily works by increasing the focal length of a telescope. It is important to note that some glasses have a shorter focal length while other has a longer distance.

Scientists have invented modern telescopes that have shorter tubes than the standard one that makes it easier for a telescope to be portable. Still, at the same time, they possess a longer focal length and allow Barlow lens work by magnifying the power of the eyepiece.

For example, the Barlow lens can double or even increase the strength of eyepiece by five times. You should know that the Barlow lens magnifies telescopes with a small number of the eyepiece.

Q- Can you stack Barlow lenses?

Some people wonder if it is possible to stack the Barlow lens to enhance the zoom capacity. The truth is that the Barlow lens can be stacked and it is a common practice done by users so that they can increase the focal length.

Stacking Barlow lens multiplies the initial focal length. Technically, if you put the Barlow lens in front of your eyepiece, you are stacking them in your telescope. Most astronomers like stacking the Barlow lens to view bright objects.

You should understand that the quality of an image will be determined by the quality of the eyepiece and the Barlow lens. While stacking the Barlow lens, you should order them systematically to get the optimal arrangement.

It is not advisable to stack the Barlow lens when viewing the sun because the sun rays can make the glass element overheat. If the parts constantly overheat, they tend to expand and get damaged quite fast.

Q- What makes a good quality Barlow lens?

A right Barlow lens should not have a single glass element but have at least more than three parts so that they can effectively eliminate the chromatic aberration and produce high-quality images.

Moreover, if you need quality images, you should choose the Barlow lens with higher magnification power. The higher the magnification power of a Barlow lens, the clearer the images. Also, a right Barlow lens should be well coated to reduce the reflection of the eyepiece when viewing objects.

The coating prevents from getting unclear photos. You should choose the Barlow lens that has long eye relief so that you can see the images comfortably. A right Barlow lens should have a compression ring that makes the eyepiece to be held correctly in place.


Q- Things to consider before buying a Barlow lens

Although almost all Barlow lens has the same appearance, some contain simple components that just deliver the light from the focal to the eyes. If you want to purchase the most quality Barlow lens, here are the most important things that you should consider before choosing the best eyepieces for your telescope.


a) Focal length and magnification

Focal length can be described as the overall optical power that an eyepiece has and is used to determine the magnification power of a telescope. Mostly, eyepieces with short focal length tend to offer higher magnification power, thus giving out more explicit images.

b) Apparent field of view

The AFOV shows what the eyepiece will show. Since the telescopes tend to collect light from a wide-angle, they manipulate the light present so that they can make the viewer with enough power to see objects that are very far.

Some eyepieces like the zoom and the arthroscopic models possess the lower apparent field of view while wide-angle eyepieces have a more defined field of view.

c) Eye relief

Eye relief distance can be referred to the distance between the eyepiece and the real image being viewed. Eye relief can affect the comfort of how the image looks. Generally, equipment with more extended eye relief is comfortable to use and provides a more precise image that is vibrant and real.

d) Coating

The component of the eyepiece can affect the quality of the images being viewed using a telescope. If you want to use the best Barlow lens, you should look for those that are treated. Coated Barlow lens tends to reduce the reflection of the eyepiece and increases the contrast. Barlow lens with achromatic eyepieces uses a coating that reduces the color blurriness, thus giving out clear images.


Review of Top 6 Barlow lens

1) Astromania 2” 2.5X Barlow Lens

best barlow lens

Check Price – Astromania 2″ 2.5X Barlow Lens

Astromania 2″2.5 Barlow lens is a great deal. This Barlow lens gives clear and enlarged space photography.


Astromania Barlow lens has 2.5X magnification power that increases the magnification of the eyepiece by 2.5X.  Moreover, these Barlow lenses have a fully multi-coated optics which has four lens elements, and is designed to improve the field of view and appears to be flat from the center edge.

Astromania 2″2.5X Barlow lens has a threaded eyepiece holder that can accommodate 2″ and 2.5″ eyepiece filter. Also, it has a brass compression ring that makes the eyepiece fit without damaging the barrel’s finish. Barlow lens does not experience corrosion and scratches, they have an aluminum housing which is well coated with an anodized hard coat.


Omni offers higher magnification power by 2.5X of the eyepiece, thus bringing the objects closer.

The four-lens design makes the telescope to make the images more luminous, and there is less chromatic aberration.

The filtering thread makes the images clear.

It has a compression ring that makes the eyepiece to be held correctly in place. There are no screws that can damage the eyepiece.

The Barlow lens is affordable and more comfortable to use.



We have not found anything yet !!!


best barlow lens



2) Celestron Omni 2X Barlow lens

Check Price – Omni 2X Barlow Lens

If you love astronomy and would like to have the best experience in getting the best astrophotography, Celestron Omni 2X Barlow lens is a great deal. Omni 2X doubles the magnification of the eyepiece by two. Moreover, it maintains the eye relief while magnifying. Omni 2X is ideally made to accept 1.25” eyepiece. The multi-coated optics has blackened edges that make the light to be transmitted without having many reflections.


Celestron Omni 2X increases the magnification of your eyepiece by two times.

Maintains the eye relief of the eyepiece while doubling the power by two times.

Comes in an elegant silver package and the element optics are fully coated with blackened edges to enhance light transmission and allow minimal reflection.

Can perfectly slide into 1.25” focuser and accepts the 1.25” eyepiece.

Omni has a metal thumbscrew that locks the eyepieces into their place.


Instantly doubles the magnification power of the eyepieces, thus giving out more explicit pictures.

Easy to screw and unscrew it thus making it a perfect deal to fit on 1.25” eyepiece.

The fully multi-coated optics have blackened edges that enhance light transmission, thus reducing the reflection. Also, it maintains the eye relief when using the eyepiece with Celestron Omni 2X Barlow lens, since some eyepieces have shorter focal length, thus having less eye relief.

The presence of a metal thumbscrew enables the eyepieces to lock in firmly in place.

The Barlow lens offers value for money and easier to use.

The blackened lenses are ideal for cutting down internal reflection.



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best barlow lens



3) Celestron Luminous 2-Inch 2.5X Barlow Lens

CelestronLuminous 2.5x Barlow

Check Price – Celestron Luminous 2.5x Barlow


The Celestron 934336 luminous increases the magnification power of 2” and 1.25” eyepiece by 2.5x

The 4-element optics is multi-coated entirely, thus optimizing the light transmission giving out high contrasts and clear color images.

The hard-anodized aluminum coating perfectly matches and accepts 2″ filters.

Has a rubber grip that helps in securing the barrel from falling.

The presence of brass compression enables the eyepieces to fit correctly into their place.

Has a matching adapter with 2″ and 2.5″ respectively to increase the magnification power of the eyepieces. This feature is vital since you don’t have to change the filter while changing the eyepiece.


Celestron 93436 Luminous Barlow lens increases the magnification of the eyepieces by 2.5X.

The 4-element optics offers a flat field, thus making the sharp images to be free of bad color.

The anodized aluminum barrel is designed to accept 2″ filters.

Has a brass compression ring that holds the eyepieces into place, and easy to turn thumbscrews.

The presence of 2” and 1.25” adapters allows user to use the Barlow lens with both 2” and 1.25” eyepieces.

Celestron 93436 is very cost-effective.


Sometimes the Luminous 2-Inch 2.5X Barlow Lens can magnify but can’t get anything into focus.


best barlow lens



4) High-Power 1.25 Inch 2X 4-Element Barlow Lens

best barlow lens for money

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This Barlow lens is a great deal in observing the lunar and other planetary observations.


High-power, 1.2” 2X 4-Element magnifies all telescopes with 1.25″ eyepieces power by 2X, thus boosting the image quality.

The 4-element lens is fully multi-coated, thus giving out sophisticated images without introducing chromatic aberration.

Maintains comfortable eye relief while magnifying and also provides relief edge sharpness while using longer focal length eyepieces.

The high-power element Barlow lens provides an excellent magnification deal while observing the lunar and other planetary observations.

The presence of brass compression rings makes sure that the eyepieces are installed correctly and securely without getting scratches.


High-power 1.25 Inch 2X 4-Element Barlow lens doubles the magnification power of the eyepiece, thus giving out a right crisp image.

The tightening clamp present has a long narrow indented tube that holds the Barlow lens from falling out even if it is not tightly secured.

The 4-element is fully multi-coated, thus giving out clear images with no chromatic aberration. The observation power is well boosted, thus optimizing the sharpness, brightness and clarity of the pictures.

The Barlow lens provides value for money.


The High-Power 1.25 Inch 2X 4-Element Barlow lens is a bit pricy.




5) Orion 8762 2-Inch 2X Barlow Lens

Check Price – Orion 2-Inch 2x Barlow Lens



Orion 8762 increases the magnification of the eyepieces by 2X, thus giving out more explicit images. It also has a 1.25″ adapter to be used with a telescope with 1.25″ eyepieces.

Orion is threaded to be able to accommodate 2” filters. It has a 30mm clear aperture and is recommended for those telescopes that have apertures of 130mm or more.


Orion 8762 Barlow lens increases the magnification of the eyepiece by 2X, thus giving out more explicit images.

The adapter present is ideal since it can be used with a telescope of 1.25” eyepieces.

The threaded option is ideal for accommodating 2″ filters, thus no need to remove the filters while changing the eyepieces.

Orion offers value for money.


Orion 8762 Barlow lens has no thumbscrew to prevent the camera from turning thus not ideal for planet photography.




6) Celestron 93428 X-Cel LX 1.25-Inch 3x Barlow Lens

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Celestron 93428 is a quality Barlow lens that magnifies 1.25” eyepieces by three times. It is ideally ideal for those people who possess telescopes with short focal length.

The optics are fully multi-coated, making it ideal for excellent color contrast and correction. It also has a centralized rubber grip that helps to secure the barrel from accidental drops, and that means you can still grip the Barlow lens when wearing gloves.

The Celestron 83428 has a brass compression ring that is placed on top of X- CEL Barlow lens holds the eyepiece firmly after turning the thumbscrew. The brass compression gives additional support on the eyepieces, thus preventing the barrel from getting scratches. It also has a threaded barrel that supports 1.25” filters, and that makes it easier to remove the eyepiece without interfering with the filters.


The X-Cel is a perfect deal for people with telescopes that have shorter focal lengths.

The optics are multi-coated, thus making the Barlow lens produce bright and sharp images.

Has a rubber grip that keeps the barrel secure from accidental drops.

The brass compression protects the eyepieces from getting scratches.


Some users complain that the magnification is a bit exaggerated.





This concludes our list of “Best Barlow Lens for the Money”.  We hope this article will help you to choose the right Barlow lens for you. If you have still some doubts or have any questions, please do leave a comment below. We would love to help 🙂


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