SV135 Zoom Eyepiece 1.25inch 7-21mm 52°-36° Field of View Fully Multi-Coated 5-Element 3-Group Optical Design
2 | Reviews- 7-21mm zoom eyepiece; allows you to change magnification power without swapping out eyepieces; suitable for viewing the lunar surface; planets; nebulae; star clusters;
- 5-elements 3-groups lens structure; 5-elements 3-groups made of high index glass deliver sharp; high contrast vistas; get bright and true image colors;
- 52°-36° field of view; SV135 zoom eyepiece allows you to see different wide field of view under the same viewing conditions;
- 13mm-14mm eye relief; with rubber eyecup; provides comfortable long term viewing for people with or without glasses;
- Standard 1.25-inch interface; compatible with 1.25-inch telescopes and filter accessories; groove anti-drop design; effectively prevents accidental falling during use.
SV135 eyepiece is a good assistant for you to observe and take pictures of the planets, which is more comfortable to view the moon, Jupiter and Saturn.
Customer Reviews
Ethan Carter
Jul 08, 2025
Its my go-to eyepiece for all objects. I use my 25mm plossl for finding objects, as the zoom suffers from low AFOV at 21mm. Of course, I only use 21mm to center an object for further magnification. its easy to use, and is much more comfortable than a 10mm plossl. Its great on mars, jupiter, and saturn, though you might want to barlow it on planets if you wish. Not only do I use it on the planets, its great to tease out details like spiral structure and other fainter details in deep sky objects.
Kurt R.
May 14, 2025
As a "budget-friendly" eyepiece, it performs well for lunar, planetary, and low-power deep-sky observations.
| Model | SV135 |
| Zoon Type | Linear |
| Focal length | 7-21mm |
| Eye Relief | 13mm - 14mm |
| Lens Design | 3 groups/ 5 pcs |
| Barrel Size | 1.25" |
| Field of view | 52°~36° |
| Lens Coating | Fully Multi-Coated-Green |
| Rubber Eye Guard | Yes |
| Meterial | Metal +Optic Glass |
| Color | Black |
| Thread Size | M28.5*0.6 |
| Net Weight | 95g |
- 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.
