Product Series
The smc Zoom eyepiece features a magnification range of 20-60X, an apparent field of view of 38 to 60 degrees, and an eye relief of 20mm. Like all PENTAX eyepieces, it is renowned for its outstanding image reproduction. With its JIS Class 6 rated waterproof and fog proof construction, this Zoom eyepiece is ideal for use with astronomical telescopes.Lens Structure: 6 elements, 4 groups
Real Field of View: 1.9 - 1 degrees
Apparent Field of View: 38-60 degrees
Field of View at 1000m: 33-17mm
Field of View at 1000 Yards: 108 - 56 ft.
Exit Pupil: 4-1.3mm
Eye Relief: 20mm
Relative Brightness: 16-1.7
Eyepiece Size: 5.7" x 2.7"
Lens & Outside Diameter: 44 x 69mm
Weight: 19.2 oz. (550g)
Additional Information
| Model | 70509 |
|---|---|
| Weight | 1.0000 |
| Eyepiece Apparent FOV | 38 |
| Eyepiece Apparent FOV2 | 60 |
| Eyepiece Barrel Size | 1.25" |
| Eyepiece Eye Relief | 20 |
| Eyepiece Eye Relief 2 | 0 |
| Eyepiece Field Stop | 0.0 |
| Eyepiece Focal Length | 6.5 |
| Eyepiece Focal Length2 | 19.5 |
| Eyepiece Elements | 6 |
