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  1. 5X Powermate image amplifier for 1.25" eyepieces Tele Vue 5X Powermate image amplifier for 1.25

    Tele Vue 5X Powermate image amplifier for 1.25" eyepieces

    $228.01
    8 Review(s)
    If you must wear glasses while observing, and you're looking for an ultra high power Barlow to get high magnifications from your favorite long focal length/long eye relief eyepieces, look no further than this 5x Powermate. While not technically a Barlow, this unique new 4-lens image amplifier performs the same functions, but at a higher level of optical correction.

    Barlow lenses have a n . . .

  2. Tele Vue 2.5X Powermate image amplifier for 1.25" eyepieces Tele Vue 2.5X Powermate image amplifier for 1.25

    Tele Vue 2.5X Powermate image amplifier for 1.25" eyepieces

    $228.01
    13 Review(s)
    While not technically a Barlow, this unique new 4-lens 2.5x image amplifier performs the same functions, but at a higher level of optical correction. Barlow lenses have a negative power that diverges field rays, lengthening the effective focal length of the telescope and increasing the magnification. If Barlows are made too short or with too much magnification, the diverging rays can cause severe . . .
  3. 2X Barlow for 1.25" eyepieces Tele Vue 2X Barlow for 1.25

    Tele Vue 2X Barlow for 1.25" eyepieces

    $133.01
    14 Review(s)
    This 2-element Barlow has superb sharpness to match that of TeleVue eyepieces. Despite being "merely" an achromatic system, good design gives it better color correction at the edges of the field than some 3-element "apochromatic" Barlows.

    It is fully multicoated, with blackened lens edges and internal antireflection threading for excellent contrast. Its barrel is threaded for standard 1.25" fil . . .

  4. 3X Barlow for 1.25" eyepieces Tele Vue 3X Barlow for 1.25

    Tele Vue 3X Barlow for 1.25" eyepieces

    $133.01
    5 Review(s)
    If you need a high quality, medium high power Barlow for 1.25" eyepieces, look no further than this TeleVue. It's a 2-lens achromatic design with superb sharpness to match that of TeleVue eyepieces. It is fully multicoated, with blackened lens edges and internal antireflection threading for excellent contrast. Its barrel is threaded for standard 1.25" filters. There's an undercut safety groove in . . .
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