TeleVue
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Tele Vue 5X Powermate image amplifier for 1.25" eyepieces
$228.01If 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 . . .
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Tele Vue 2X Big Barlow for 2" eyepieces, with 1.25" eyepiece adapter
$228.01This 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. . . .
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Tele Vue 2.5X Powermate image amplifier for 1.25" eyepieces
$228.01While 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 . . .
