BK 909AZ3
Refractors
| Optical Design | Achromatic Refractor |
| Optical Diameter | 90mm |
| Focal Length | 900mm |
| F/Ratio | F/10 |
| Highest Practical Power | 180x |
| Faintest Steller Magnitude | 12.5 |
| Finder Scope | 6x30* |
| Focuser Diameter | 1.25" |
| Diagnol | 1.25" 45 deg. Erect Image* |
| Eyepieces | 1.25" Super 25 and 10* |
| Tube Weight | 2.49Kgs |
| Tube Dimensions | 9cm x 86.5cm |
| Shipping Weight | 12Kgs |
| Shipping Dimensions | 102x42x24 cm3 |