Tele Vue 1.25" 2x Barlow
Stock count is accurate & shown in real time.
- This item is out of stock.
- Sign up for back-in-stock alerts to be notified when this item becomes available.
- This item is out of stock.
- We have no ETA from the manufacturer at this time.
- Sign up for back-in-stock alerts to be notified when this item becomes available.
Lower 48 States:
Orders over $50 ship free within the Lower 48 using a carrier and service we select based on your items and delivery location. Faster shipping options may be available at checkout.
U.S. Outside the Lower 48 (AK, HI, PR):
Free shipping on orders over $50 applies to many—but not all—items. Add items to your cart and enter your ZIP code to see available shipping options and any costs.
International Orders:
Free shipping does not apply to international orders. You’ll see available shipping options and costs during checkout. Some items can’t be shipped internationally due to size or manufacturer restrictions. Duties, taxes, brokerage fees, and tariffs are not included and are the customer’s responsibility.
Concept:
"I originally designed the Tele Vue Barlow line to complement the high performance of our eyepieces. Only 2 elements of high index glass were required to reduce all aberrations to well below the airy disc in an f/4 system. It has taken a good 15 years, but I think we're finally laying to rest the popular myth of the "degrading Barlow." In a 1997 Sky & Telescope review, Terrence Dickenson wrote "...Technology has erased the old objections. A modern Barlow will not degrade your telescope's optics. Anyone telling you otherwise is using outdated information. Moreover, the highly regarded Nagler eyepieces and their clones have built-in Barlows - ample evidence that the lens is not some detrimental intruder." Thanks Terry, I couldn't agree more." - Al Nagler
Properly designed Barlows do wonderful things: They amplify power, slow the telescope's f/# (improving eyepiece sharpness), and give designers the opportunity to compensate for eyepiece aberrations. Tele Vue Barlows use multi-coated high index glasses for optimum aberration correction, exceptional contrast with virtually no light loss. Observed performance is aberration free, even when tested with f/4 scopes. They even improve their competitor's eyepieces and telescopes!
Tele Vue Quality
Compromise image quality in any part of the optical chain and you've compromised every part! Tele Vue product design and execution deliver consummate satisfaction. Every Tele Vue Barlow must pass the same rigorous f/4, full field testing as all their eyepieces. All Tele Vue Barlows now use brass clamp rings for secure, non marring holding of eyepieces and accessories.
Tele Vue 1.25" Barlow in 2x Magnification
This 2x 1.25" Barlow performs identically as Tele Vue's 3x Barlow. Simply choose this or the 3x Barlow based on your eyepiece collection. Features include parfocal-ization, 1.25" filter threads, captive lock screws that won't fall out, and full multicoatings. Weight = 0.30 lbs.
Other Information
- Country of Manufacture: Japan
Concept:
"I originally designed the Tele Vue Barlow line to complement the high performance of our eyepieces. Only 2 elements of high index glass were required to reduce all aberrations to well below the airy disc in an f/4 system. It has taken a good 15 years, but I think we're finally laying to rest the popular myth of the "degrading Barlow." In a 1997 Sky & Telescope review, Terrence Dickenson wrote "...Technology has erased the old objections. A modern Barlow will not degrade your telescope's optics. Anyone telling you otherwise is using outdated information. Moreover, the highly regarded Nagler eyepieces and their clones have built-in Barlows - ample evidence that the lens is not some detrimental intruder." Thanks Terry, I couldn't agree more." - Al Nagler
Properly designed Barlows do wonderful things: They amplify power, slow the telescope's f/# (improving eyepiece sharpness), and give designers the opportunity to compensate for eyepiece aberrations. Tele Vue Barlows use multi-coated high index glasses for optimum aberration correction, exceptional contrast with virtually no light loss. Observed performance is aberration free, even when tested with f/4 scopes. They even improve their competitor's eyepieces and telescopes!
Tele Vue Quality
Compromise image quality in any part of the optical chain and you've compromised every part! Tele Vue product design and execution deliver consummate satisfaction. Every Tele Vue Barlow must pass the same rigorous f/4, full field testing as all their eyepieces. All Tele Vue Barlows now use brass clamp rings for secure, non marring holding of eyepieces and accessories.
Tele Vue 1.25" Barlow in 2x Magnification
This 2x 1.25" Barlow performs identically as Tele Vue's 3x Barlow. Simply choose this or the 3x Barlow based on your eyepiece collection. Features include parfocal-ization, 1.25" filter threads, captive lock screws that won't fall out, and full multicoatings. Weight = 0.30 lbs.
| Free Shipping Graphic | Free US Shipping | ||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Special Text Below Specs |
|
||||||||||||||||||||||||||||||||||||||||||||
| Hide Found a better Shipped Price on Frontend? | No |
| Size Format | 1.25 inch |
|---|---|
| Magnification Factor | 2x |
| Number of Lens Elements | 2 |
| Lens Coatings | Fully multicoated |
| Total Length | 3.82 inches / 97 mm |
| Length of Nosepiece | 2.2 inches / 56 mm |
| Outside Length of Upper Body | 1.62 inches / 41.1 mm |
| Insertion Depth | 1.38 inches / 35 mm |
| Max Diameter Excluding Thumbscrew | 2.2 inches / 56 mm |
| Clear Aperture | 0.94 inches / 23.8 mm |
| Weight | 4.8 oz / 136 g |
| Barlow Lens Cell Removable | Yes |
| Filter Threads at Bottom of Barlow Cell | Yes - 1.25" (M28.5x0.6) Filter Threads |
| Filter Threads Between Barlow Cell and Tube | Non-standard |
| Barrel Type | Smooth-sided |
| Compatible Agena Bolt Case (with Screw Removed) | N/A |
| Compatible Bolt Case (with Screw Attached) | 65x80 |
| Number of Thumbscews | 1 |
| Thumbscrew Thread Specification | Coming Soon |
| End Caps (Subject to change without notice) | 2 |
| Compression Band/Ring in Eyepiece Holder | Yes |
| Country of Manufacture | Japan |
Concept:
"I originally designed the Tele Vue Barlow line to complement the high performance of our eyepieces. Only 2 elements of high index glass were required to reduce all aberrations to well below the airy disc in an f/4 system. It has taken a good 15 years, but I think we're finally laying to rest the popular myth of the "degrading Barlow." In a 1997 Sky & Telescope review, Terrence Dickenson wrote "...Technology has erased the old objections. A modern Barlow will not degrade your telescope's optics. Anyone telling you otherwise is using outdated information. Moreover, the highly regarded Nagler eyepieces and their clones have built-in Barlows - ample evidence that the lens is not some detrimental intruder." Thanks Terry, I couldn't agree more." - Al Nagler
Properly designed Barlows do wonderful things: They amplify power, slow the telescope's f/# (improving eyepiece sharpness), and give designers the opportunity to compensate for eyepiece aberrations. Tele Vue Barlows use multi-coated high index glasses for optimum aberration correction, exceptional contrast with virtually no light loss. Observed performance is aberration free, even when tested with f/4 scopes. They even improve their competitor's eyepieces and telescopes!
Tele Vue Quality
Compromise image quality in any part of the optical chain and you've compromised every part! Tele Vue product design and execution deliver consummate satisfaction. Every Tele Vue Barlow must pass the same rigorous f/4, full field testing as all their eyepieces. All Tele Vue Barlows now use brass clamp rings for secure, non marring holding of eyepieces and accessories.
Tele Vue 1.25" Barlow in 2x Magnification
This 2x 1.25" Barlow performs identically as Tele Vue's 3x Barlow. Simply choose this or the 3x Barlow based on your eyepiece collection. Features include parfocal-ization, 1.25" filter threads, captive lock screws that won't fall out, and full multicoatings. Weight = 0.30 lbs.
Other Information
- Country of Manufacture: Japan
| Free Shipping Graphic | Free US Shipping | ||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Special Text Below Specs |
|
||||||||||||||||||||||||||||||||||||||||||||
| Hide Found a better Shipped Price on Frontend? | No |
| Size Format | 1.25 inch |
|---|---|
| Magnification Factor | 2x |
| Number of Lens Elements | 2 |
| Lens Coatings | Fully multicoated |
| Total Length | 3.82 inches / 97 mm |
| Length of Nosepiece | 2.2 inches / 56 mm |
| Outside Length of Upper Body | 1.62 inches / 41.1 mm |
| Insertion Depth | 1.38 inches / 35 mm |
| Max Diameter Excluding Thumbscrew | 2.2 inches / 56 mm |
| Clear Aperture | 0.94 inches / 23.8 mm |
| Weight | 4.8 oz / 136 g |
| Barlow Lens Cell Removable | Yes |
| Filter Threads at Bottom of Barlow Cell | Yes - 1.25" (M28.5x0.6) Filter Threads |
| Filter Threads Between Barlow Cell and Tube | Non-standard |
| Barrel Type | Smooth-sided |
| Compatible Agena Bolt Case (with Screw Removed) | N/A |
| Compatible Bolt Case (with Screw Attached) | 65x80 |
| Number of Thumbscews | 1 |
| Thumbscrew Thread Specification | Coming Soon |
| End Caps (Subject to change without notice) | 2 |
| Compression Band/Ring in Eyepiece Holder | Yes |
| Country of Manufacture | Japan |
Tele Vue 1.25" 2x Barlow