• The zoom eyepiece allows you to change magnification power without swapping out eyepieces;
• 5-Elements/3-groups made of high index glass deliver sharp, high contrast vistas;
• A simple twist of the zoom eyepiece housing changes the focal length from 7mm to 21mm, providing a variety of viewing magnification powers;
• 13mm-14mm eye relief range;
• Sleek black barrel with safety undercut to reduce the possibility of the eyepiece slipping out of the focuser or diagonal;
• Blackened lens edges, anti-reflection threads for maximum contrast.

Top Christmas Gift Ideas: Perfect Presents for Everyone!

• The zoom eyepiece allows you to change magnification power without swapping out eyepieces;
• 7-Elements/4-groups made of high index glass deliver sharp, high contrast vistas;
• A simple twist of the zoom eyepiece housing changes the focal length from 7mm to 21mm, providing a variety of viewing magnification powers;
• 15mm eye relief range;
• Sleek black barrel with safety undercut to reduce the possibility of the eyepiece slipping out of the focuser or diagonal;
• Blackened lens edges, anti-reflection threads for maximum contrast.

Top Christmas Gift Ideas: Perfect Presents for Everyone!

• The SV230 super zoom aspheric eyepiece is featured with clickstop click and Parfocal design, 57°-72° panoramic wide angle provides you with the ultimate observation comfort.
• It supports astigmatic corrector connection. Long eye relief of 17-19mm for comfortable viewing position, even for eyeglass wearers. 
• It can be used during the day and in the night, sky support excellent resolution and contrast values as well as a sharp image at a large apparent field of view.
• Observing planets with SV230 eyepiece is highly convenient, as it allows for clear and undistorted images without any edge distortion. 

Get Reviews Video by (@Bogdan Damian) 

Top Christmas Gift Ideas: Perfect Presents for Everyone!

• SV215 zoom eyepiece is a good assistant for you to observe and take pictures of the planets;
• Click and stops design;
• 6-element of 4-group lens structure;
• fully multi-coated optics for remarkable sharpness;
• contrast and color correction.

• Multiple uses; SV191 7.2-21.6mm zoom eyepiece allows you to change magnification power without swapping out eyepieces;
• 1.25 inches standard eyepiece; not only for astronomical telescopes; but also for spotting scope;
• 7-Elements 4-Groups lens structure; 7-Elements 4-groups made of high index glass deliver sharp; high contrast vistas;
• M28.5*0.6 filter threads; base of SV191 zoom lens has a threaded adapter which allows standard 1.25in filter;
• 18-20mm eye relief; twist up rubber eyecup and 18-20mm long eye relief provides comfortable long term viewing for people with or without glasses.

Top Christmas Gift Ideas: Perfect Presents for Everyone!

• SV215 zoom eyepiece is a good assistant for you to observe and take pictures of the planets; it is a good helper for the amateur astronomers to observe Venus; Mars; Jupiter; Saturn etc;
• Adjustable focal length; SV215 3 mm to 8mm zoom eyepiece equivalent to multiple eyepieces; this helps you to zoom in and out rather than changing lens;
• Parfocal across the entire zoom range; minor tweaking may be necessary; you do not need to refocus every time you change the focal length;
• Constant field of view and eye relief; the apparent field of view and the usable eye relief to stay the same as the focal length changes;
• Click and stops design; there are clicks and stops as you pass through the marked zoom levels; easy to use even in the dark
• Zoom ring moves smoothly; the zoom is smooth and gradual as you twist the eyepiece;
• 6-element of 4-group lens structure; fully multi-coated optics for remarkable sharpness; contrast and color correction.

Note: The front focal point of the SV215 is located inside the eyepiece body. It requires a main mirror with sufficient focusing range to ensure smooth and focused imaging.  Iis not suitable for 1.25-inch interface birding scopes. 

Top Christmas Gift Ideas: Perfect Presents for Everyone!

Zoom Eyepiece eliminates the need to change eyepieces so you can spend more time viewing the night sky instead of fumbling in the dark when you want higher or lower magnifications.

Top Christmas Gift Ideas: Perfect Presents for Everyone!

Svbony super-wide-angle 1.25'' zoom eyepiece 10-30mm, allows you to change magnification power without swapping out eyepieces.

• SV171 Super-wide Angle 1.25" 8mm-24mm zoom eyepiece;SV171 zoom eyepiece allows you to change magnification power without swapping out eyepieces
• FMC glass lens; Fully multi-coated glasses for excellent image contrast and light transmission; Sharp optimal performance with low chromatic aberration
• Comfortable long eye relief design; Exceptionally long 18mm-19.5mm eye relief range allows eyeglass wearers to enjoy the entire field of view without needing to remove their glasses
• Unique humanized design;Sleek black barrel with safety undercut to reduce the possibility of the eyepiece slipping out of the focuser or diagonal
• Standard 1.25" fitting diameter compatible with any astronomical telescope with 1.25" focuser;The bottom M28.5 x 0.6 thread can also be used with standard 1.25" Filter