Product Details
The 2-group 4- element Plossl series eyepieces offer flat and clear images with good color correction. The NPL20, NPL25, NPL30 and NPL40 eyepieces feature a twist-up eye cup.
| Eyepiece Series | NPL Plossl |
|---|---|
| Focal Length | 4mm |
| Barrel Size | 1.25" (31.7mm) |
| Apparent Field of View (Mfg Specified) | 50° |
| Eye Relief (Designed) | 2.3mm |
| Filter Threads | Standard 1.25" Filter Thread (M28.5 x 0.6) |
| Lens Elements | 4 |
| Lens Groups | 2 |
| Barrel Safety Recess | Yes |
| Barrel Type | With safety undercut |
| Protective Plastic Storage Container | Yes - Free Agena Eyepiece Container |
| Protective Plastic Storage Container Size | Agena 42x60mm |
| Optical Design | Plossl |
| Weight | 2.47 oz / 70g |
