Description

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.

Specifications

• Lens Type: Doublet Apochromatic Prime Lens
• Focal Length: 430mm
• Diameter: 73mm
• Aperture: f/5.9
• Image circle: 45mm
• Focuser: 2" R&P Focuser, compatible with EAF
• Adapter Included: 2" -> 1.25" Visual Back
• Optional Flattener: FLAT 73A 1.0x, FLAT 73R 0.8x
• Camera Format: Full Frame, APS-C, M4/3
• Tube Length: 330mm - 420m
• OTA Weight: 2.83kg / 6.24lbs