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  1. #126 2X Barlow for 1.25" eyepieces

    $39.99
    This physically very short (2.5") Meade Barlow was designed to use with Meade ETX Maksutov-Cassegrains, but it can be used in the 1.25" star diagonal of any telescope for true 2x magnification . . .
  2. Tele Vue 2X Powermate image amplifier for 2" eyepieces, with 1.25" eyepiece adapter

    $326.01
    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. Explore Scientific 2X Barlow for 2" eyepieces, with 1.25" adapter

    $299.99
    This new four-element 2" 2x Explore Scientific focal extender (Barlow lens) has a 1.25" eyepiece adapter so you can use both 2" and 1.25" eyepieces in your 2" focuser . . .
  4. Celestron 2X Barlow for 1.25" eyepieces (includes T-adapter)

    $44.95
    While this Celestron 1.25" 2x achromatic Barlow can be used visually, it also has T-threads so it can be used as a T-adapter for lunar and terrestrial photography . . .
  5. Astro-Tech 2X apochromatic ED Barlow for 2" eyepieces, with 1.25" adapter

    $59.95
    Here's an exceptional bargain - an optically premium 2" Astro-Tech 2x true apochromatic Barlow with ED glass and a 1.25" adapter at a low price you would normally expect to pay for an ordinary achromatic 1.25" Barlow . . .
  6. 2X 1.25" Barlow with compression ring

    $204.00
    This quality 2x Barlow is designed to mount in front of your star diagonal and uses a non-marring compression ring to hold the diagonal in place, rather than an easily-lost metal thumbscrew . . .
  7. Celestron 2X Omni Barlow for 1.25" eyepieces

    $49.95
    This good quality Celestron 1.25" Barlow is fully multicoated for sharp, high contrast, 2x magnification . . .
  8. Celestron X-Cel LX 2X 3-element Barlow for 1.25" eyepieces

    $94.95
    This 2x Celestron X-Cel LX three-lens air-spaced fully multicoated 1.25" Barlow performs a lot more expensively than it costs . . .
  9. Tele Vue 2X Big Barlow for 2" eyepieces, with 1.25" eyepiece adapter

    $217.01
    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. . . .

  10. Explore Scientific 2X Barlow for 1.25" eyepieces

    $199.99
    This new four-element 1.25" 2x Explore Scientific focal extender (Barlow lens) has an exceptionally flat field and essentially no color fringing with all telescope types and focal ratios . . .
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