Tele Vue Barlows

Properly designed Barlows do wonderful things. First, they amplify power while retaining the
eyepiece's eye-relief. Second, they slow the telescopes f number, which improves eyepiece
sharpness. Third, the designer can introduce compensations for eyepiece abberations.

Tele Vue's 2" 2x BIG Barlow, 1¼" 2x and 3x Barlows were envisioned as magnification
windows. Multi-coated high index glasses assure optimum abberation correction, exceptional
contrast and virtually no light loss. Tele Vue Barlows achieve their design goals even when
tested by the fastest scopes. They even improve our competitor's eyepieces and telescopes!

For eyeglass wearers, the Big Barlow is perfect for doubling power while retaining the
eye-relief of 2" Tele Vue eyepieces such as the 55mm Plossl, 35mm and 27mm Panoptics
(requires use of Panoptic Barlow Interface) and 20mm Nagler Type 2.

Our design approach includes mechanical conveniences. The Barlows are parfocal with our
eyepieces and the BIG Barlow includes a parfocal 2"-1¼" adapter. The BIG Barlow is
threaded
for 48mm filters and has a captive lock screw. Both 1¼" Barlows are threaded for 1¼" filters.

Prices:
BLW-2125 - 2.0x 1.25" Barlow - £73.00
BWC-2200 - 2x 2" BIG Barlow - £138.00
BLW-3125 - 3.0x Barlow - £73.00

The Astronomy Shop

1 Tone Hill. Wellington

Somerset TA21 0AU

United Kingdom

Telephone: +44 (0)1823 665510