William Optics Zenithstar 81 WIFD
William Optics Zenithstar 81 WIFD
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Product Description
Explore the universe with the William Optics ZenithStar 81 WIFD, a premium refractor telescope that offers unparalleled optical precision with its innovative Internal Focus Design (WIFD). Perfect for astrophotography and visual observations, it features a patented internal focusing mechanism that keeps optics perfectly aligned, even with heavy cameras.
Available in vibrant red or elegant gold, the ZenithStar 81 WIFD boasts a compact and durable build. Enhance your viewing with optional accessories like the Flat6aIII, a 0.8x reducer for broader celestial views, and the 50mm Uniguider for improved tracking accuracy during long exposures.
With its refined internal focuser, this telescope provides smooth, precise adjustments for consistently sharp images. Whether capturing distant galaxies or observing planetary details, the ZenithStar 81 WIFD is an excellent choice for serious astronomers.
What can I see with a William Optics Zenithstar 81 WIFD?
Here are some simulated views of common objects. Results with your telescope will vary with viewing conditions, obrits, equipment and more.
Jupiter with
25mm Eyepiece - 22x Magnification
(Sold Separately)
Jupiter with
10mm Eyepiece - 56x Magnification
Sold Separately
Jupiter with
5mm Eyepiece - 112x Magnification
Sold Separately
Moon with 25mm Eyepiece
22x Magnification
(Sold Separately)
Moon with 10mm Eyepiece
56x Magnification
Sold Separately
Moon with 5mm Eyepiece
112x Magnification
Sold Separately
Andromeda with 36mm Eyepiece
16x Magnification
Sold Separately
Andromeda with 25mm Eyepiece
22x Magnification
(Sold Separately)
Andromeda with 10mm Eyepiece
56x Magnification
Sold Separately
What's in the Box
Specifications
| Lens Type: | Doublet Apochromatic Prime Lens |
| Focal Length: | 559 mm |
| Diameter: | 81mm |
| F/ Ratio: | f/6.9 |
| Image Circle: | 45mm |
| Focuser: | WIFD (W/O Internal Focus Design) Compatible with EAF |
| Optional Flattener: | FLAT 6AIII 0.8x |
| Lens Material: | FPL-53 |
| Camera Format: | > Full Frame |
| Test Report: | Available Below |
| OTA Weight: | 3.55 kg / 7.82 lbs |
| Total Weight: | 4.56 kg / 10.05 lbs |
| Tube Length (Retracted): | 526mm |
| Tube Length (Extended): | 607mm |
