Baader Planetarium
Baader Planetarium Hyperion Zoom 2.25X Bar... $189.95
The Baader 2.25X Triplet Hyperion Zoom Barlow produces better performance using Hyperion Zoom Eyepieces. This Barlow can turn your Hyperion Zoom 8mm-24mm into a 3.5 - 10.5 mm eyepiece in an instant. If you don't already have the HYP-ZOOM eyepiece, you might prefer to purchase the Baader Zoom Eyepiece and Barlow Kit. Description The included T-2 adapter allows coupling to any of the 1.25" eyepiece holder or can be directly linked to a 1.25" eyepieces threads with other included adapters. Basically, any eyepiece designed with a 1.25" thread can be used, allowing a wide variety of configurations to suit your...
Celestron
Celestron 2.5x - 2" Luminos Barlow Lens (9... $215.95
The Celestron 2” Luminos Barlow Lens increases the magnification of your 2” and 1.25” eyepieces by 2.5x. The premium 4-element apochromatic optics are fully multi-coated for optimum light transmission and yield high contrast, true colour images. Description The beautiful hard-anodized aluminum housing matches the eyepieces in the Celestron Luminos line. A centralized rubber grip helps to keep your hands securely on the barrel, even when your fingers are cold or you are wearing gloves. A brass compression ring just inside the top of the Luminos 2.5x Barlow grabs your 2” eyepieces gently but firmly when you turn the oversized thumbscrew....
Celestron
Celestron 2x - 1.25" - X-Cel LX Barlow Len... $161.95
When inserted between the eyepiece and telescope, this 2x Barlow lens doubles the magnification of all your 1.25” eyepieces. The Premium apochromatic optics yield high contrast sharp images, virtually free of false colour. Description The black anodized housing with orange highlights matches the eyepieces in the Celestron X-Cel LX line. A centralized rubber grip helps to keep your hands securely on the barrel, even when your fingers are cold or you are wearing gloves. A brass compression ring just inside the top of the X-Cel Barlow grabs your eyepiece gently but firmly when you turn the thumbscrew. Once the thumbscrew...
Celestron
Celestron X-CEL LX 3x Barlow Lens 1.25" (9... $161.95
When inserted between the eyepiece and telescope, this premium 3x Barlow lens triples the magnification of all your 1.25” eyepieces. This is a perfect accessory for owners of short, fast telescopes, and is especially helpful for boosting the magnification during lunar or planetary observations under good seeing conditions. The apochromatic, fully multi-coated optics offer great colour correction and contrast. Description The black anodized housing with orange highlights matches the eyepieces in the Celestron X-Cel LX line. A centralized rubber grip helps to keep your hands securely on the barrel, even when your fingers are cold or you are wearing gloves....
Tele Vue Optics
Tele Vue 2.0x 2" Powermate (PMT-2200) $446.00
Al Nagler’s new 4-element concept, continues the tradition of full-field sharpness with optimum aberration control. Like long eye-relief? Retain the eye-relief of long focal length eyepieces, while at high power. Enjoy, for example, the sharpness and comfort of the 32mm Plössl at up to 5 times the power! Description Unique Benefits and Applications for Powermates Vignetting, edge field aberrations and pupil movement - all introduced when using Barlows with long focal length eyepieces, are minimized. Telecentric operation (field rays leave parallel to optical axis, unlike Barlow lenses which diverge rays). This is ideal for Hydrogen-alpha filter use such as with...
Tele Vue Optics
Tele Vue 2.0x Barlow 1.25" (BLW-2125) $174.00
Offered in 2x and 3x magnifications, these 1¼" Barlows perform identically. Simply choose either or both based on your eyepiece collection. Features include parfocalization, 1¼" filter threads, captive lock screws that won't fall out and full multicoatings. Description 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.TeleVue 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 our competitor's eyepieces and telescopes!...
Tele Vue Optics
Tele Vue 2.5x 1.25" Powermate (PMT-2513) $298.00
 Al Nagler’s new 4-element concept, continues the tradition of full-field sharpness with optimum aberration control. Like long eye-relief? Retain the eye-relief of long focal length eyepieces, while at high power. Enjoy, for example, the sharpness and comfort of the 32mm Plössl at up to 5 times the power! Description Unique Benefits and Applications for Powermates Vignetting, edge field aberrations and pupil movement - all introduced when using Barlows with long focal length eyepieces, are minimized. Telecentric operation (field rays leave parallel to optical axis, unlike Barlow lenses which diverge rays). This is ideal for Hydrogen-alpha filter use such as with...
Tele Vue Optics
Tele Vue 3.0x Barlow 1.25" (BLW-3125) $174.00
Offered in 2x and 3x magnifications, these 1¼" Barlows perform identically. Simply choose either or both based on your eyepiece collection. Features include parfocalization, 1¼" filter threads, captive lock screws that won't fall out and full multicoatings. Description 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.TeleVue 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 our competitor's eyepieces and telescopes!...
Tele Vue Optics
Tele Vue 4.0x 2" Powermate (PMT-4201) $455.00
 Al Nagler’s new 4-element concept, continues the tradition of full-field sharpness with optimum aberration control. Like long eye-relief? Retain the eye-relief of long focal length eyepieces, while at high power. Enjoy, for example, the sharpness and comfort of the 32mm Plössl at up to 5 times the power! Description Unique Benefits and Applications for Powermates Vignetting, edge field aberrations and pupil movement - all introduced when using Barlows with long focal length eyepieces, are minimized. Telecentric operation (field rays leave parallel to optical axis, unlike Barlow lenses which diverge rays). This is ideal for Hydrogen-alpha filter use such as with...
Tele Vue Optics
Tele Vue 5.0x 1.25" Powermate (PMT-5126) $298.00
1.25" Powermates: 2.5x & 5x. These models stand less than 3" out of your focuser and both are threaded for 1.25" filters. They are parfocal in ALL 1.25" diagonals and prisms. For this reason, they are highly recommended over standard Barlows for 1.25" diagonals and refractors such as the TeleVue-60. The 5x Powermate is ideal for long focus CCD and film photography, magnifying about 7.7x. It's an attractive, high performance alternative to eyepiece projection. The 5x is also perfect for slowing down your scope for Hydrogen-Alpha solar observing. Description Unique Benefits and Applications for Powermates Vignetting, edge field aberrations and pupil...

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