10 Item(s)
Set Descending Direction
  1. T-Ring adapter for 1.25" Powermates Tele Vue T-Ring adapter for 1.25

    Tele Vue T-Ring adapter for 1.25" Powermates

    $53.00
    2 Review(s)
    This threaded adapter ring replaces the eyepiece holder on the 1.25" 2.5x and 5x TeleVue Powermate Barlows to allow direct connection of a camera T-ring for photography.
  2. 2X Powermate image amplifier for 2" eyepieces, with 1.25" eyepiece adapter Tele Vue 2X Powermate image amplifier for 2

    Tele Vue 2X Powermate image amplifier for 2" eyepieces, with 1.25" eyepiece adapter

    $342.01
    12 Review(s)
    If you need a very high quality 2x Barlow for 2" eyepieces, look no further than this TeleVue 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 negative power that diverges field rays, lengthening the effective focal length of the telescope and increasing the magnification . . .
  3. 2X Big Barlow for 2" eyepieces, with 1.25" eyepiece adapter Tele Vue 2X Big Barlow for 2

    Tele Vue 2X Big Barlow for 2" eyepieces, with 1.25" eyepiece adapter

    $228.01
    This 2" 2x Clamp Ring Big Barlow can be used with any telescope using a 2" focuser. As it is only 4.5" long, it can also be used in most 2" star diagonals for 2x magnification.

    It can also be placed into a 2" focuser in front of a 2" star diagonal to give higher magnification than the nominal 2x. Some refractors might not have enough focuser travel to allow this directly, however. . . .

  4. 4X Powermate image amplifier for 2" eyepieces, with 1.25" eyepiece adapter Tele Vue 4X Powermate image amplifier for 2

    Tele Vue 4X Powermate image amplifier for 2" eyepieces, with 1.25" eyepiece adapter

    $349.01
    6 Review(s)
    If you need a very high quality, very high power 4x Barlow for 2" eyepieces, look no further than this TeleVue 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 negative power that diverges field rays, lengthening the effective focal length of the telescope and increasi . . .

  5. T-Ring adapter for 2" 2x Powermate Tele Vue T-Ring adapter for 2

    Tele Vue T-Ring adapter for 2" 2x Powermate

    $60.00
    1 Review(s)
    This threaded photographic adapter ring replaces the 2" eyepiece holder on the 2" 2x TeleVue Powermate Barlow. After unscrewing the black 2" eyepiece holder from the chrome barrel containing the optics of the Powermate, the adapter threads directly onto the chrome barrel in place of the eyepiece holder. The adapter has T-threads on the other end that allow a T-ring to be attached to the adapter so . . .
  6. T-Ring adapter for 2" 4x Powermate Tele Vue T-Ring adapter for 2

    Tele Vue T-Ring adapter for 2" 4x Powermate

    $60.00
    This threaded adapter ring replaces the 2" eyepiece holder on the 2" 4x TeleVue Powermate Barlow and can only be used with the newest version of the Powermate (our part #9140C). After unscrewing the black 2" eyepiece holder from the chrome barrel containing the optics of the Powermate, the adapter threads directly onto the chrome barrel in place of the eyepiece holder. The adapter has T-threads th . . .
  7. 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 . . .

  8. 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 . . .
  9. 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 . . .

  10. 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 . . .
10 Item(s)
Set Descending Direction