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Miyauchi BS-77iB 20x77
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Specifications
| Manufacturer | Miyauchi |
|---|---|
| Model | BS-77iB 20x77 |
| Lens diameter [mm] | 77 |
| Magnification [x] | 20 |
| Angular field of view [deg] | 2.5 |
| Linear field of view [m/m] | 44/1000 |
| Exit pupil [mm] | 3.85 |
| Eye relief [mm] | 17.5 |
| Min. focusing dist. [m] | 20.8 |
| Twilight factor | 39.24 |
| Brightness | 14.82 |
| Prisms | BaK-4/Porro |
| Dimensions [mm] | 320x180x120 |
| Weight [g] | 2580 |
| Waterproof | No |
| Nitogen filling | No |
| Argon filling | No |
| Image stabilization | No |
| Tripod exit | Yes |
| Focusing | individual |
| Warranty [years] | 1 |
| Accesories | |
| Price | 5218 |
| Additional information |
Owners reviews (1)
Overall
Owner since: 8 years
Price: 900
User profile: Semipro
Cons: Only little chromatic aberration on very bright objects.
Pros: Excellent contrast and more than enough sharpness. Helical focuser for the eyepieces is WONDERFUL.
Summary: Very useful and fun 45 degree binocular Telescope.