WILLIAM OPTICS ZENITHSTAR 81 F/6.9 DOUBLET REFRACTING OTA
The William Optics ZenithStar 81 mm aperture Doublet APO Refactor is an extremely versatile telescope ideal for both astrophotography and general photography. It provides a sharp image to any DSLR, and pristine clarity for both visual observers and astrophotographers. This scope series is even capable of handling full frame sensors.
The air-spaced 81 mm series utilizes FPL53 glass for the clear detail provided and sharp colors. Similar to past models, this series also includes a 1:10 dual speed, 2.5-inch, R&P ultra robust focuser.
William Optics has crafted this series as an f/6.9 for respectable speed. On top of that, each scope in the series comes with a built-in, removable, clear Bahtinov mask for convenience in focusing.
The OTAs include a dual-side dovetail compatible with Vixen and Arca Swiss stylings.
Delivered with:
- Optical Tube
- Tuberings
- Mountingplate
- Bahtinov Mask
Available colours are red, gold or blue. Please indicate when ordering.
Products specifications
| Connection to eyepiece | 2" |
| Focal ratio | f/6.9 |
| Lens | Doublet ED Apo with FPL-53 Element |
| Tube weight | 3.7 kg |
| Focuser | 2.5" R&P 1:10 |
| Focal length | 559mm |
| Aperture | 81mm |
| Transportation length | 460mm fully Retracted, 560mm fully Extendet |
