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Explore the Skies with William Optics ZenithStar 73 APO III
Step into a world of precision astronomy with the William Optics ZenithStar 73 APO III, the ultimate tool for avid sky watchers and astrophotographers. This advanced apochromatic refractor is engineered with a premium air-spaced doublet lens that incorporates Ohara FPL-53 ED glass to produce exceptionally clear and vivid images with minimal chromatic aberration.
Its compact and robust design, highlighted by a beautifully machined aluminum body and an elegantly anodized finish available in red and gold, ensures both durability and portability. Ideal for capturing stunning wide-field astronomical images and for portable visual astronomy, the ZenithStar 73 combines superior optical performance with ease of use. It includes high-quality accessories such as a CNC machined carry handle, a precision Bahtinov mask for easy focusing, and a protective soft case for travel.
Perfect for both beginners and seasoned astronomers, the William Optics ZenithStar 73 APO III stands out as a versatile and reliable choice for exploring the cosmos.
| Specification | Details |
|---|---|
| Lens Type | Doublet Apochromatic Prime Lens |
| Focal Length | 430 mm |
| Diameter | 73 mm |
| Aperture | f/5.9 |
| Image Circle | 45 mm |
| Focuser | 2″ Rack & Pinion (R&P) Focuser, compatible with EAF |
| Optional Flattener |
FLAT 73A 1.0x FLAT 73R 0.8x |
| Adapter Included | 2" → 1.25" Visual Back |
| Camera Format | Full Frame APS-C M4/3 |
| Camera Format Compatibility | Full Frame and larger |
| Dovetail Type | Vixen ↔︎ Arca-Swiss |
| Tube Length | Adjustable, 330 mm – 420 mm |
| OTA Weight | 2.83 kg (6.24 lbs) |
| Total Weight | Not available |
