TeleVue - 2x BARLOW

Properly designed Barlows do wonderful things: They amplify power, slow the
telescope’s f/# (improving eyepiece sharpness), and give designers the
opportunity to compensate for eyepiece aberrations.

Tele Vue Barlows use multi-coated high index glasses for optimum aberration
correction, exceptional contrast with virtually no light loss. Observed
performance is aberration free, even when tested with f/4 scopes. They even
improve our competitor’s eyepieces and telescopes!
For astro-imagers, the above chart indicates the magnification for each Barlow (2x, 2x Big & 3x)
as a function of distance from the Barlow top surface to the imaging surface (CCD or film).

1¼” Barlows

Offered in 2x and 3x magnifications, these 1¼” Barlows perform identically. Simply choose either
or both based on your eyepiece collection. Features include parfocal-ization, 1¼” filter threads,
captive lock screws that won’t fall out and full multicoatings.

2” Big Barlow

Offered in a 2x magnification, the Big Barlow is ideal for Newtonian scope owners. It will be
parfocal with both 2” and 1¼” eyepieces in this application. Features include threads for 48mm
filters, captive lock screw and full multi-coatings.

	

Includes filter threads and captive screw