The William Optics Zenithstar 81 is a two element designed APO refractor.
Using FPL-53 glass this telescope provides excellent aberration correction.
Features include:
- Smooth, stable and reliable rack and pinion 2.5″ focuser
- Built-in Bahtinov mask
- CNC Handle bar with dovetail slot
- Soft carry case is included
Specfications:
Focal Length | 559mm |
Diameter | 81mm |
Aperture | F6.9 |
Camera Format | APS-C, Full Frame |
Focuser | 2.5″ Rack and Pinion |
Image Circle | 44mm |
Recommended Flattener | FLAT 6A III |
TubeLength (Retracted) | 460mm |
TubeLength (Extended) | 560mm |
OTA Weight | 3.53kg |