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  • Baader Planetarium Baader Planetarium 1.25" VIP 2X Barlow - VIPB
    $269.00
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  • Celestron Celestron Omni Series 1.25" 2x Barlow Lens - 93326
    $49.95 $42.95
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  • Celestron Celestron X-Cel LX 3X Barlow Lens - 1.25" - 93428
    $94.95 $84.95
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  • Celestron Celestron 2.5X Luminos Barlow Lens - 2" - 93436
    $124.95 $114.95
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  • Celestron X-Cel LX 1.25
    Celestron Celestron X-Cel LX 2X Barlow Lens - 1.25" - 93529
    $94.95 $77.95
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  • Coronado Coronado 2x 1.25" CEMAX H-Alpha Contrast Enhanced Barlow - BAR
    $79.99 $74.95
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  • Explore Scientific 2x Focal Extender - 2
    Explore Scientific Explore Scientific 2" 2x Focal Extender - FE02-020
    $214.99
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  • Explore Scientific 2x Focal Extender - 1.25
    Explore Scientific Explore Scientific 2x Focal Extender - 1.25" - FE02-125
    $119.99
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  • Explore Scientific 3x Focal Extender - 1.25
    Explore Scientific Explore Scientific 1.25" - 3x Focal Extender - FE03-125
    $119.99
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  • Explore Scientific 5x Focal Extender - 1.25
    Explore Scientific Explore Scientific 1.25" - 5x Focal Extender - FE05-125
    $174.99
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  • High Point High Point 2X Barlow Lens - 1.25" - 2XB1
    $29.95
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  • High Point High Point 3x Barlow Lens w/ ED Glass - 1.25" - 3XB1
    $39.95
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  • High Point High Point 5x APO Barlow Lens - 1.25" - 5XB1
    $49.95
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  • Meade Meade 1.25" Short Focus 2X Barlow Lens - 07273
    $39.99 $32.95
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  • Meade Meade 1.25" Short Focus 3x Barlow Lens - 07278
    $39.99 $31.95
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  • Orion Orion 2x 1.25" Shorty Barlow Lens - 8711
    $39.99 $31.99
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  • Takahashi Takahashi 2X Barlow - 1.25" - TKA00597
    $204.00
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  • Tele Vue Tele Vue 2X Barlow Lens - 1.25" - BLW-2125
    $128.00
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  • Tele Vue Tele Vue 3.0x 1.25" Barlow Lens - BLW-3125
    $128.00
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  • Tele Vue Tele Vue 2.0x 2" Big Barlow Lens - BWC-2211
    $218.00
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  • Tele Vue Tele Vue 2.0x - 2" Powermate - PMT-2200
    $327.00
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  • Tele Vue Tele Vue 2.5x - 1.25" Powermate - PMT-2513
    $218.00
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  • Tele Vue Tele Vue 4.0x - 2" Powermate - PMT-4201
    $333.00
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  • Tele Vue Tele Vue 5.0x - 1.25" Powermate - PMT-5126
    $218.00
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  • Takahashi 1.6X Extender Q
    Takahashi Takahashi 1.6X Extender QE for FSQ-106EDX4 - TKA36595
    $570.00
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  • High Point High Point 2.5x Barlow Lens - 1.25" - 25XB1
    $49.95
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  • High Point High Point 2x ED Barlow Lens - 2" - 2XB2
    $59.95
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  • Orion Orion 3x 1.25" Tri-Mag Barlow Lens - 08704
    $69.99
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  • Orion Orion High-Power 1.25" 3x 4-Element Barlow Lens - 08707
    $166.99
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  • Orion Orion High-Power 1.25" 5x 4-Element Barlow Lens - 08715
    $209.99
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  • Baader Planetarium Q-Barlow
    Baader Planetarium Baader Planetarium Q-Barlow (HT-Multicoated) - BQB
    $59.00
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  • Baader Planetarium 2.25x Hyperion Zoom Barlow
    Baader Planetarium Baader Planetarium Hyperion 2.25X Zoom Barlow - HYP-BARLOW
    $137.00
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  • High Point High Point 2X Barlow Lens with Universal T-Adapter - 2XB1T
    $29.95
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  • Takahashi 1.5X Extender ED
    Takahashi Takahashi 1.5X Extender ED - TKA37595
    $530.00
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  • Explore Scientific 3x Focal Extender - 2
    Explore Scientific Explore Scientific 2" 3x Focal Extender - FE03-020
    $244.99
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  • Baader Planetarium TZ-2 Telecentric System - 2x Focal Extension
    Baader Planetarium Baader Planetarium TZ-2 Telecentric System - TZ-2
    $469.00
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  • Baader Research Grade TZ-3 Telecentric Focal Extension System
    Baader Planetarium Baader Planetarium Research Grade TZ-3 Telecentric System - TZ-3
    $489.00
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  • Baader Telecentric TZ-4 Focal Extension System - 4x
    Baader Planetarium Baader Planetarium 4x Focal Extension Telecentric System - TZ-4
    $469.00
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  • Meade 2
    Meade Meade 2" 2X Barlow Lens - 608004
    $79.99
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  • Stellarvue 2x Short Barlow for Access Series Telescopes - 1.25
    Stellarvue Stellarvue Access Series 2x Shorty Barlow - EB001
    $29.00
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Barlow lenses are an essential part of any telescope accessory collection. Invented in 1834 by Peter Barlow, the Barlow Lens increases the magnification of your telescope. The most popular barlow lens is the 2x barlow lens. By using a 2x Barlow Lens you are cutting the effective focal length of your eyepiece in half. For example, if you are using a 20mm Eyepiece with a 2x Barlow Lens you will effectively cut the focal length to 10mm, therefore doubling the magnification of whatever telescope you decide to use.

Barlow Lense focal extenders are great telescope accessories because when added to your telescope accessory collection they essentially double the magnification range of your eyepiece assortment. For example, if you have focal lengths of 40mm, 25mm and 10mm in your collection and you add a 2x Barlow Lens then you will have effectively widened your collection range to 40mm, 25mm, 20mm, 12.5mm, 10mm and 5mm. Adding a Barlow focal extender lens is a great way to increase your eyepiece magnification range while saving money!

Barlow Lenses are easy to use, all you have to do is take the eyepiece you want to use and insert it into your barlow lens and tighten the set screw. You then take your eyepiece and barlow lens combination and insert them into the diagonal of your telescope. Barlow Lenses come in 1.25" and 2" formats. The 1.25" barlow lens is the most common, however the 2" barlow lens is becoming more and more popular because is allows more light to enter through the eyepiece.

If you don't have a barlow lens you should seriously consider adding one to your telescope accessory collection!

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