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

    Regular Price: $217.01

    Special Price $196.00

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

    Regular Price: $326.01

    Special Price $294.00

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

    Regular Price: $217.01

    Special Price $196.00

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

    Regular Price: $332.01

    Special Price $300.00

    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 . . .

4 Item(s)
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