Tele Vue 2X BIG Barlow - 2" - BWC-2211 Binocular Mounts their free StarSense Explorer app

their free StarSense Explorer app

SKU: CPBM-102GD Function: Bahtinov Focusing Mask and Dust Cover Accepts/Fits: GT102 and Z103 Telescopes Material: Acrylic

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

also known as color fringing

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

Tele Vue 2X BIG Barlow - 2" - BWC-2211 Binocular Mounts their free StarSense Explorer appAbout 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