Tele Vue's Powermate amplifiers pick up where a Barlow can go no further. Experience less vignetting when using long focal length eyepieces compared to a standard Barlow. Tele Vue's Powermates are nearly parfocal which means that you can boost the power of a particular eyepiece and may only need to touch up the focus slightly.
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With 4 different powers to choose from: a 2” 2x, a 1.25" 2.5x, a 2" 4x, and a 1.25” 5x, you will find a power for any situation under the stars! Of course, when choosing Tele Vue you can expect all the special touches like full multi-coatings, safety undercuts where practical on the chrome barrel, captive lock screws that can't fall out, as well as filter threads. Want to add a camera to your image train? No problem! Tele Vue has crafted "T-Ring adapters" that thread onto the optical portion of the Powermate, allowing you to thread a standard camera T-Ring as well as your DSLR.
Adding a Powermate amplifier to your eyepiece case adds dramatic power and nothing else to your favorite eyepieces! Achieve freedom from aberrations with greater magnification potential when choosing a Powermate!