The apparent field of view and the usable eye relief to stay the same as the focal length changes.
Smooth zoom action with click-stops at 3, 4, 5, 6,7 and 8mm for quick changes to precise preset magnifications.
Parfocal across the entire zoom range (minor tweaking may be necessary, however).
In Stock
Fantastic Eyepiece
Purchased this eyepiece splendid with my 10inch skywatcher a little bit powerful at 3mm I'm sure would be good if weather was clearer as I tested while there was a bit of haze but first night seeing Jupiter with its Ganyemed moon and red spot crystal clear also tested it on my Gso c6 f/12 also fantastic as for postage ultra fast just 10 days on standard shipping to Aus Svbony is a pleasure to do business with can count on there affordable and quality products keep them coming!!!!
| Brand | SVBONY |
| Model | SV215 |
| Focal Length | 3-8mm |
| Barrel Size | 1.25" |
| Apparent Field of View | 56° |
| Coatings | Fully Multi-Coated |
| Blackened Lens Edges | Yes |
| Eye Relief | 10mm |
| Parfocal | Yes |
| Filter Threads | M28.5x0.6 |
| Lens Elements | 6 |
| Lens Groups | 4 |
| Barrel Type | With safety undercut |
| Rubber Eye Guard | Yes |
The zoom eyepiece is designed to provide the best balance of contrast, comfortable eye relief, and resolution for the critical planetary observer, particularly those with ultra-premium short focal length refractors.
6-Element/4-Groups, Fully Multi-Coated optics for remarkable sharpness, contrast and color correction.
Fold-down rubber eyeguard and a rubber grip ring.
Package Includes:
SVBONY 3mm-8mm 1.25" Zoom Eyepiece
Rubber Dust Cover
Mirror Cloth