This eyepiece removes field curvature at the edge, resulting in a flat, distortion-free image, and features over-sized lenses with a large 60° field of view with 16mm eye relief.
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Terrific Performance at a Bargain Price
I don't know how SVBony does it. They now offer a wide range of amateur astronomy products at incredibly low prices. I've purchased both eyepieces and diagonals. All have exceeded my expectations. The 10mm flat field eyepiece displays a wide angle flat field, better than expected eye relief, and no annoying "kidney bean" effect. That means if you reye is slightly off center, the image doesn't blank out. This eyepiece is a quality product that is ideal for beginners as well as experienced observers.
| Product Name | SV190 Ultra Flat Field Eyepiece |
| Focal length | 10mm |
| Eye Relief | 16mm |
| Lens Structure | 5-Elements/4Groups |
| Field of view | 60-Degrees |
| Coatings | Fully Multi-Coated |
| 1.25" Thread size | M28.5*0.6 |
| Thread specification under the eyecup | M34*0.75 |
| Eye Cup type | Rubber |
| Field diaphragm | 14.7mm |
| Net weight | 84g/ 2.95oz |
| Package Size | 110x76x70mm |
SVBONY SV190 10mm Ultra Flat Field Eyepiece delivers high quality in a very compact design. This eyepiece removes field curvature at the edge, resulting in a flat, distortion-free image, and features over-sized lenses with a large 60° field of view with 10mm eye relief. All lenses (5 lenses in 4 groups) have a broad-band multi-coating (FMC) and blackened lens edges, and the plug-in sleeve is equipped with a thread for 1.25″ filters.