Product Detail
2 | Reviews
SV135 Zoom Eyepiece 1.25inch 7-21mm 52°-36° Field of View Fully Multi-Coated 5-Element 3-Group Optical Design
- 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.
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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.
| Model | SV135 |
| SKU | W9105B |
| 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.
As a "budget-friendly" eyepiece, it performs well for lunar, planetary, and low-power deep-sky observations.
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.