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Barlow Lenses & Focal Extenders
Explore Scientific 2" 2x Focal Extender - FE02-020
SKU: EXS-FE02-020
- Barlow or Extender Barrel Size: 2"
- Barlow or Extender by Magnification: 2X
- Number of Elements: 4
- Lens Coatings: Fully Multi-Coated with EMD Enhanced Coatings
Free shipping
$269.99
Explore Scientific 2x Focal Extender - 1.25" - FE02-125
SKU: EXS-FE02-125
- Barlow or Extender Barrel Size: 1.25"
- Barlow or Extender by Magnification: 2X
- Number of Elements: 4
- Lens Coatings: Fully Multi-Coated
$159.99
Explore Scientific 1.25" - 3x Focal Extender - FE03-125
SKU: EXS-FE03-125
- Barlow or Extender Barrel Size: 1.25"
- Barlow or Extender by Magnification: 3X
- Number of Elements: 4
- Lens Coatings: Fully Multi-Coated
$169.99
Explore Scientific 1.25" - 5x Focal Extender - FE05-125
SKU: EXS-FE05-125
- Barlow or Extender Barrel Size: 1.25"
- Barlow or Extender by Magnification: 5X
- Number of Elements: 4
- Lens Coatings: Fully Multi-Coated
$179.99
Meade 1.25" Short Focus 2X Barlow Lens - 07273
SKU: MEA-07273
- Barlow or Extender Barrel Size: 1.25"
- Barlow or Extender by Magnification: 2X
- Lens Coatings: Multi-Coated
$39.95
Meade 1.25" Short Focus 3x Barlow Lens - 07278
SKU: MEA-07278
- Barlow or Extender Barrel Size: 1.25"
- Barlow or Extender by Magnification: 3X
- Number of Elements: 2
- Lens Coatings: Multi-Coated
$39.95
Celestron Omni Series 1.25" 2x Barlow Lens - 93326
SKU: CEL-93326
- Barlow or Extender Barrel Size: 1.25"
- Barlow or Extender by Magnification: 2X
- Number of Elements: 2
- Lens Coatings: Fully Multi-Coated
$54.95
Celestron X-Cel LX 3X Barlow Lens - 1.25" - 93428
SKU: CEL-93428
- Barlow or Extender Barrel Size: 1.25"
- Barlow or Extender by Magnification: 3X
- Number of Elements: 3
- Lens Coatings: Fully Multi-Coated
$109.95
Celestron 2.5X Luminos Barlow Lens - 2" - 93436
SKU: CEL-93436
- Barlow or Extender Barrel Size: 2"
- Barlow or Extender by Magnification: 2.5X
- Number of Elements: 4
- Lens Coatings: Fully Multi-Coated
Free shipping
$144.95
Celestron X-Cel LX 2X Barlow Lens - 1.25" - 93529
SKU: CEL-93529
- Barlow or Extender Barrel Size: 1.25"
- Barlow or Extender by Magnification: 2X
- Number of Elements: 3
- Lens Coatings: Fully Multi-Coated
$109.95
Celestron Universal T Adapter & 2X Barlow Lens Assembly - 93640
SKU: CEL-93640
- Barlow or Extender Barrel Size: 1.25"
- Barlow or Extender by Magnification: 2X
- Length: 3" (76mm)
$51.95
Baader Planetarium 1.25" VIP 2X Barlow - VIPB
SKU: BAD-VIPB
- Barlow or Extender Barrel Size: 1.25"
- Barlow or Extender by Magnification: 2X
- Number of Elements: 2
- Lens Coatings: Fully Multi-Coated
Free shipping
$269.00
Orion 3x 1.25" Tri-Mag Barlow Lens - 08704
SKU: ORI-08704
- Barlow or Extender Barrel Size: 1.25"
- Barlow or Extender by Magnification: 3X
- Number of Elements: 2
- Lens Coatings: Multi-Coated
$49.99
Orion 2x 1.25" Shorty Barlow Lens - 8711
SKU: ORI-08711
- Barlow or Extender Barrel Size: 1.25"
- Barlow or Extender by Magnification: 2X
- Number of Elements: 2
- Lens Coatings: Multi-Coated
$39.99
Takahashi 2X Barlow - 1.25" - TKA00597
SKU: TAK-TKA00597
- Barlow or Extender Barrel Size: 1.25"
- Barlow or Extender by Magnification: 2X
- Number of Elements: 2
- Lens Coatings: Fully Multi-Coated
$147.00
Tele Vue 2X Barlow Lens - 1.25" - BLW-2125
SKU: TLV-BLW-2125
- Barlow or Extender Barrel Size: 1.25"
- Barlow or Extender by Magnification: 2X
- Lens Coatings: Fully Multi-Coated
Free shipping
$128.00
Tele Vue 3.0x 1.25" Barlow Lens - BLW-3125
SKU: TLV-BLW-3125
- Barlow or Extender Barrel Size: 1.25"
- Barlow or Extender by Magnification: 3X
- Number of Elements: 2
- Lens Coatings: Fully Multi-Coated
Free shipping
$128.00
Tele Vue 2.0x 2" Big Barlow Lens - BWC-2211
SKU: TLV-BWC-2211
- Barlow or Extender Barrel Size: 2"
- Barlow or Extender by Magnification: 2X
- Accepts both 2" and 1.25" eyepieces with the aid of the included 1.25" eyepiece adapter
- Best suited for use with Newtonian reflector telescopes
- Fully multi-coated with 48 mm filter threads
Free shipping
$218.00
Tele Vue 2.0x - 2" Powermate - PMT-2200
SKU: TLV-PMT-2200
- Barlow or Extender Barrel Size: 2"
- Barlow or Extender by Magnification: 2X
- Number of Elements: 4
Free shipping
$327.00
Tele Vue 2.5x - 1.25" Powermate - PMT-2513
SKU: TLV-PMT-2513
- Barlow or Extender Barrel Size: 1.25"
- Barlow or Extender by Magnification: 2.5X
- Number of Elements: 4
Free shipping
$218.00
Tele Vue 4.0x - 2" Powermate - PMT-4201
SKU: TLV-PMT-4201
- Barlow or Extender Barrel Size: 2"
- Barlow or Extender by Magnification: 4X
- Number of Elements: 4
Free shipping
$333.00
Tele Vue 5.0x - 1.25" Powermate - PMT-5126
SKU: TLV-PMT-5126
- Barlow or Extender Barrel Size: 1.25"
- Barlow or Extender by Magnification: 5X
- Number of Elements: 4
Free shipping
$218.00
Takahashi 1.6X Extender QE for FSQ-106EDX4 - TKA36595
SKU: TAK-TKA36595
- Barlow or Extender Barrel Size: 2"
- Barlow or Extender by Magnification: 1.6X
- Number of Elements: 5
Free shipping
$630.00
Free shipping
$427.00
Apertura 5x APO 1.25" Barlow Lens - A-5XB1
SKU: APT-A-5XB1
- Barlow or Extender Barrel Size: 1.25"
- Barlow or Extender by Magnification: 5X
- Number of Elements: 3
- Lens Coatings: Fully Multi-Coated
$49.95
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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!