The Best Barlows in 2023



What is a Barlow Lens?

A Barlow lens is a simple optical device that is used with telescopes to increase the magnification of an eyepiece. The Barlow lens is placed between the eyepiece and the focuser of the telescope, and it works by increasing the effective focal length of the telescope system. This increased focal length results in a magnified image, which allows you to observe smaller details in astronomical objects.

Barlow lenses are a popular accessory for amateur astronomers, as they are an inexpensive and easy way to increase the magnification of a telescope without having to buy additional eyepieces. Most Barlow lenses are designed to be used with standard 1.25-inch or 2-inch eyepieces, and they come in a variety of magnifications, typically ranging from 2x to 5x.

How to choose a Barlow Lens?

When choosing a Barlow lens, there are several factors you should consider:

  1. Magnification: Barlow lenses are available with different magnification factors, ranging from 2x to 5x or higher. Consider the maximum magnification you need for your observing setup, and choose a Barlow lens that provides the desired magnification.
  2. Number of lenses: Barlows have usually between 2 and 4 lenses. The entry-level have 2 lenses, and advanced ones will have up to 4 lenses. The more lenses Barlows have, the better the image quality will be. More lenses mean less chromaticity, less aberrations, and therefore better performance.
  3. Quality of the Glass: The quality of the glass used in the Barlow lens can affect the clarity and sharpness of the image. Make sure to choose a Barlow lens made with high-quality glass to ensure the best viewing experience.
  4. Coatings: Barlow lenses with multiple anti-reflective coatings on the lenses can reduce reflections and glare, which can improve image quality and make it easier to see faint objects.
  5. Compatibility with your Telescope: Barlows come in different sizes and thread types, so it’s important to choose a Barlow lens that is compatible with your focuser and eyepieces. Make sure to check the specifications of your telescope and the Barlow lens to ensure compatibility.
  6. Price: Barlow lenses range in price from affordable to expensive, so consider your budget when making a decision. Keep in mind that a higher-priced Barlow lens does not always mean a better-quality product.
  7. Durability: A Barlow lens that is well-constructed and durable is important, especially if you plan to use it frequently. Make sure to choose a Barlow lens that is built to last and can withstand the rigors of regular use.

How to Take Care of Barlow Lenses?

As any optics are sensitive, here are some tips for taking care of your Barlows:

  1. Cleaning: To clean the lenses of your Barlow lens, use a microfiber cloth and lens cleaning solution specifically designed for optical surfaces. Avoid using tissue paper or rough materials that could scratch the lens.
  2. Storage: Store your Barlow lens in a clean, dry place when not in use. Consider keeping it in a protective case to prevent dust or other particles from settling on the lens.
  3. Avoid Exposure to Moisture: Moisture can damage the lenses of your Barlow lens, so be sure to store it in a dry place and avoid exposing it to damp conditions. If the lens does get wet, use a microfiber cloth to gently dry it off.
  4. Handle Carefully: When handling your Barlow lens, be sure to hold it by the body and not the lens itself. This will prevent any accidental scratches or other damage to the lens.
  5. Avoid Dropping: Dropping a Barlow lens can cause serious damage, so be sure to handle it with care and avoid dropping it. If the lens does get damaged, consider having it professionally repaired or replaced.
  6. Avoid Over-tightening: When attaching or removing the Barlow lens from your focuser, be careful not to over-tighten it. Over-tightening can cause damage to the focuser or the Barlow lens itself.

The 20 Best Barlows for telescopes

Here are the best Barlows for telescopes. Note that the best Barlow lens for you will depend on your specific needs and the type of telescope you’re using. Some factors to consider when choosing a Barlow lens include magnification, weight, field of view, and compatibility with your telescope’s eyepieces.

Bestseller No. 1
SVBONY 3X Barlow Lens, Fully-Multi Coated...
  • Advanced Achromatic Lens;Superior sharpness and color...
  • For owners of fast short focal length telescopes;It not only...
  • 3x Barlow triples the magnification of any 1.25” eyepiece;...
  • Includes both end caps to protect against dust and...
  • Works on for Celestron; Orion;and most brands of...
SaleBestseller No. 2
Celestron 3X - 1.25” – X-Cel LX Barlow Lens
  • 3 Element Apochromatic Lens
  • Fully Multi-Coated Optics
  • Brass Compression Ring
  • 3x Barlow
  • 1.25'' Format
SaleBestseller No. 3
Celestron Omni 1.25" 2X Barlow Lens, Multi, Model...
  • Double the magnification of each eyepiece you own with the...
  • Keep the eye relief of your eyepieces while getting 2X the...
  • Slides into 1.25 inch focuses and diagonals and accepts 1.25...
  • Fully multicoated optics with blackened edges for good light...
Bestseller No. 4
Barlow Lens 2X, Bysameyee 1.25 Inch Fully...
  • Doubles the Magnification: This 2X Barlow lens doubles the...
  • Interface with M42x0.75 Thread: With T/T2 (M42x0.75mm) male...
  • Multilayer HD Broadband Green Film Optical Glass Lens: Offer...
  • Quality Made: Aluminum stock and black anodized body,...
  • Free Dust Cap: Keeps lens clear easily with 2 pairs of dust...
Bestseller No. 5
Starboosa 1.25-inch 5X Barlow Lens & Moon Filter...
  • Barlow lens & moon filter, which are indispensable for...
  • 5x Barlow lens has a magnification of 2.5 times in the...
  • Works with telescopes from Celestron, Skywatcher, Mead,...
  • Universal M42 thread connection, you can also connect an SLR...
  • Both the 5x Barlow lens and Moon Filter frame are processed...
Bestseller No. 6
Orion Shorty 1.25" 2x Barlow Lens - This Compact...
  • Double the power of any 1.25" telescope eyepiece with the...
  • A great way to essentially double the number of telescope...
  • Very compact - just 3 inch long (half the length of a...
  • Doublet lens system is multi-coated for excellent...
  • Threaded for use with 1.25 inch Orion telescope eyepiece...
Bestseller No. 7
NEEWER 3X Barlow Len for 1.25" Telescope Eyepiece,...
  • 【Triple Magnification Barlow Lens】Designed to enhance...
  • 【Great Optical Performance】The LS-T11 Barlow lens excels...
  • 【Wide Eyepiece Compatibility】 The 1.25" Barlow lens can...
  • 【Easy to Use with M42x0.75 Thread】Simply place the 3X...
  • 【Full Metal Build with Protective Caps】With full metal...
Bestseller No. 8
SVBONY Telescope Barlow Lens, 1.25 Inch Telescope...
  • The value must have 5x barlow lens doubles the magnification...
  • Quality aluminum stock and black anodized body
  • 3 element 2 group lenses with multi coated optics design...
  • Qulity and shorty aluminum stock and black anodized body for...
  • 2 element one group broadband green film multi coated...
SaleBestseller No. 9
NEEWER 2X Barlow Lens for Telescope Eyepiece,...
  • 【Double Magnification Barlow Lens】 NEEWER 2X Barlow lens...
  • 【Multi-layer HD Optical Glass Lens】 Anti-reflective...
  • 【Interface with M42x0.75 Thread】The T/T2 (M42x0.75mm)...
  • 【High-quality Material】 Aluminum alloy and black...
  • 【Protective Cap】 Two pairs of protective caps to keep...
Bestseller No. 10
SVBONY SV137 2X Barlow Lens 1.25 inch Metal Body...
  • Provides comfortable viewing;Using the 2x barlow lens with a...
  • Quality aluminum stock and black anodized body; Precision...
  • Full bandwidth multi-coated lens;Ensure that the incoming...
  • Brass ring design;The built-in brass pressure ring on the...
  • Well-made 2x barlow lens black tube flocking matt inside;all...
Bestseller No. 11
Astromania 1.25" 4-Elements 5X Barlow Lens Fully...
  • The Astromania High-Power 5x 4-Element Barlow Lens...
  • Featuring a high-quality 4-element lens design, the...
  • The Barlow lens elements are fully multi-coated with...
  • The lenses are also edge-blackened to further maximize...
  • The 1.25 barrel is internally threaded for use with...
SaleBestseller No. 12
Celestron T-Adapter/Barlow Lens Universal –...
  • Package Dimensions: 9.652 cms (L) x 5.334 cms (W) x 4.826...
  • Product Type: Camera Lenses
  • Package Quantity: 1
  • Country Of Origin: China
Bestseller No. 13
SVBONY SV137 Barlow Lens 1.25 Inch 2X Barlow Lens...
  • Standard 1.25 inches;Quality SVBONY SV137 1.25-Inch 2x...
  • Double glued lens set;The true FMC coating process ensures...
  • The Edges of the lenses are blackened; The lens is matte...
  • User-friendly design;Anti-slip ring design to prevent...
  • Brass ring design;The built-in brass pressure ring on the...
Bestseller No. 14
Vision Scientific VAF05 0.5X Barlow Lens for...
36 Reviews
Vision Scientific VAF05 0.5X Barlow Lens for...
  • 0.5X Barlow lens doubles working distance and field view of...
  • Cutting magnification power by half and doubling working...
  • Mounting size: 1-7/8" (48mm) in diameter
Bestseller No. 15
Celestron 93436 Luminous 2-Inch 2.5X Barlow Lens...
  • The Celestron 2.5x Luminos Barlow increases the...
  • High-quality 4-element optics produce a flat field for sharp...
  • Hard-anodized aluminum barrel is threaded to accept 2"...
  • A brass compression ring holds eyepieces firmly in place,...
  • A 2" to 1.25" adapter is included. Allows the use of both 2"...
Bestseller No. 16
Bindpo 2X Barlow Lens, 1.25inch Fully Multi-Coated...
  • 【2X Magnification Barlow Lens】High-definition 2X...
  • 【Fully Multi-Coated Glass Lens】Glass lens has high light...
  • 【For Astronomy Lovers】This Barlow Lens suitable for 1.25...
  • 【Barlow Lens Size】Barrel Size: 1.25inch / 31.75mm,...
  • 【Great After-sales Service】We offer 100% satisfaction...
SaleBestseller No. 17
Omni 1.25" 2X Barlow Lens Fully Multi-Coated for...
  • Double the magnification of each eyepiece you own with the...
  • Keep the eye relief of your eyepieces while getting 2X the...
  • Slides into 1.25” focusers and diagonals and accepts...
  • Fully multi-coated optics with blackened edges for good...
Bestseller No. 18
AmScope SM05 0.5X Barlow Lens For SM Series Stereo...
  • 0.5X Barlow lens doubles working distance and field view of...
  • This lens comes with a 1-7/8" (48mm) mounting thread and...
  • Mounting size: 1-7/8" (48mm) in diameter.
  • This lens comes with a 1-7/8" (48mm) mounting thread and...
SaleBestseller No. 19
Astromania 1.25" 3X Short Focus Barlow Lens for...
  • 3x increase in magnification - Superior sharpness and color...
  • It not only increases the magnification, the image will be...
  • High quality Barlow. Bayonet SLR cameras can be connected to...
  • Essentially triple the power of any 1.25" telescope eyepiece...
  • Compatible with most 1.25- Inch diameter telescope...
Bestseller No. 20
AmScope SM07 0.7X Barlow Lens For SM Stereo...
101 Reviews
AmScope SM07 0.7X Barlow Lens For SM Stereo...
  • 0.7X Barlow lens for SM series stereo microscopes, extending...
  • 0.7X Barlow lens for SM series stereo microscopes, extending...
  • This lens comes with a 1-7/8" (48mm) mounting thread and...
  • It is a right lens for SM series stereo microscopes.
  • Its retail value is more than $200.

Additional Resources

The following links gives additional resources to learn more about Barlow lenses.

  1. Wikipedia (en.wikipedia.org/wiki/Barlow_lens) – A comprehensive resource that provides an overview of Barlow lenses, including their history, construction, and use in astronomy.
  2. Sky & Telescope (skyandtelescope.org) – A leading publication for amateur astronomers that provides articles and resources on Barlow lenses, including their use in telescopes, how to choose the right one, and how to use them effectively.
  3. Cosmic Pursuits (cosmicpursuits.com) – A website dedicated to amateur astronomy that provides information on Barlow lenses, including their use in telescopes, how to choose the right one, and how to use them effectively.
  4. The Astronomy Café (astronomycafe.net) – A comprehensive resource for amateur astronomers that provides information on a wide range of astronomical topics, including Barlow lenses, with articles and discussions on their use in telescopes, how to choose the right one, and how to use them effectively.
  5. An Introduction to Astrophotography (optodir.com/introduction-to-astrophotography/) – An introduction to methods and tools to start photography of the sky’s objects with a telescope.
  6. A Youtube video by Celestron (https://www.youtube.com/watch?v=5wWKjpDR4J8) explaining what is a Barlow lens.

Last update on 2024-05-19 / Affiliate links / Images from Amazon Product Advertising API

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