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TeleVue 2x Barlow BLW-2125 are designed to amplify power, lengthen the telescopes f ratio (improving sharpness) and help to correct for aberrations. Most importantly for eyeglass wearers, a TeleVue 2x Barlow BLW2125 increases the magnification of long eye relief eyepieces.
TeleVue 2x Barlow BLW-2125 and TeleVue 3x 1 1/4" barlow offer parfocalization (no need to refocus when switching eyepieces) and are fully multicoated. TeleVue Barlows also feature filter threads and captive lock screws.
I am very happy with this 2x Barlow. Pros: sharp image out to field stop with various eyepiece ranging from 6mm to 32mm. Cons: light loss as to be expected, and added weight and extension of eyepiece may affect balance of your telescope. Overall, I...
I love everything Televue. Compared to low end Celestron Barlow, there is a world of difference. No effect on sharpness or color correction with the Televue - just double magnification.
Pros: cost effective doubling of magnification, excellent optica...