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  1. 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 . . .
  2. Celestron Luminos 2.5x 4-element Barlow for 2" and 1.25" eyepieces

    $114.95
    This 2.5x Celestron Luminos four-lens fully multicoated Barlow provides superb field flatness and minimal chromatic aberration with both 2" and 1.25" eyepieces . . .
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