SVBONY SV137 3X Barlow Lens 1.25 inch Telescope Accessory Metal Body Bundle with SV135 Zoom Eyepiece, 6 Element 4 Group Telescope Accessories for Astronomic Telescopes Visual

SV137 1.25 inches 3x barlow lens triple the power of any 1.25 inches telescope eyepiece it's used with. High magnification for eyepieces to see more details of the moon and other planet.A brass compression ring just inside the top of SV137 barlow lens grabs your eyepiece gently but firmly when you turn the screw.Double-glued lens set and full-band width multi-coated lenses for excellent transmission.Fully multi-coated lens made of high index glass deliver sharp, high contrast vistas, SV137 telescope barlow lens can give you excellent aberration correction.SVBONY SV135-This is definitely a must for beginners to start a good eyepiece collection.with this eyepiece, you can enjoy planetary astronomy .As a beginner; SV135 is good for starter astronomer! Zoom from low to high power in an instant with SV135 versatile eyepiece Zoom Eyepiece; 7mm-21mm linear continuous zoom; give you more flexibility with out changing eyepieces;Very easy to use and very smooth operation. 1.25" barrel size; Compatible with any telescope that accepts 1.25" eyepieces;1.25" aluminum barrel is threaded for filters and internally blackened to eliminate internal scattering.

• Fashion appearance;Different from the black that is common in the market;The silvery look makes the product look more stylish;The overall appearance is beautiful and upscale
• Brass compression ring design; A brass compression ring can protect your eyepiece from marring or scratching the barrel; Keeping your eyepiece in new looking
• Lens edges is blackened; The edge of the mirror is matted black; Reduce scattering of stray light and maximize contrast
• SV135 7 mm to 21mm adjustable focal length;SV135 7-21mm zoom eyepiece equivalent to multiple eyepieces ;obtain higher magnification with short focal length;It could bring you a better observation experience in a comfortable situation with high-contrast imaging
• 18mm - 16.3mm comfortable eye relief; especially for eyeglass wearers ;designed primarily for viewing landscapes and astronomical observations of lunar surfaces; planets; nebulae; clusters; and diffuse nebulae