Tele Vue 2X BIG Barlow - 2" - BWC-2211 Binocular Mounts This tool ensures the accurate

This tool ensures the accurate alignment of a telescope

or lounge chair

durable housing for the filter glass and are threaded on top and bottom to permit stacking

the Lunt 40mm F/10 system is sure to impress allowing both amateur and seasoned professions to experience  the awe inspiring phenomena of our closest Star

also known as color fringing

Tele Vue 2X BIG Barlow - 2" - BWC-2211 Binocular Mounts This tool ensures the accurateAbout the TeleVue 2X BIG Barlow 2" Properly designed Barlow lenses do wonderful things: They amplify power, slow the telescope'''s f # (improving eyepiece sharpness), and give designers the opportunity to compensate for telescope eyepiece aberrations. Tele Vue Barlow Lenses 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