William Optics Zenithstar 73 III APO Refractor Telescope - Gold Edition

Explore the cosmos with the William Optics Zenithstar 73 III APO Refractor, the latest evolution of one of William Optics' most celebrated telescopes. Renowned for its exceptional optical performance and superior craftsmanship, this compact yet powerful telescope is ideal for both astrophotography and visual observation, promising stunning celestial images.

Advanced Optical Excellence

At its core, the Zenithstar 73 III features an apochromatic doublet optical system with an air gap, utilizing FPL-53 glass from Japan's prestigious Ohara company. This material boasts an exceptional Abbe number of ±94.49, ensuring extremely low dispersion akin to fluorite glass. Combined with a multi-layer anti-reflective coating, it delivers sharp, high-contrast images.

Designed for Photographic Precision

The telescope's large illumination disc diameter makes it perfect for use with cameras and SLR cameras equipped with full-frame sensors, as well as APS-C matrices.

Key Features:

• Apochromatic doublet crafted from FPL-53 optical glass with a multi-layer anti-reflective coating.
• CNC-fabricated fasteners for enhanced durability and precision.
• Includes William Optics' patented Bahtinov mask design with a convenient handle.
• Full illumination circle for complete coverage of full-frame sensors.
• Lightweight and compact design for easy transport.

Technical Specifications:

• Optical System: ED-APO apochromatic doublet
• Objective Diameter: 73 mm
• Focal Length: 430 mm
• Focal Ratio: f/5.9
• Maximum Usable Magnification: 219x
• Lens Material: FPL-53 glass from Ohara, Japan
• Anti-reflective Coating: Full multi-layer coating (FMC)
• Full Illumination Circle Diameter: Complete full frame coverage
• Compatible Sensor Sizes: APS-C, full frame
• Compatible Photographic Systems: Canon EF, Nikon F, Sony E, Pentax, Micro 4/3, Fuji FX (via interchangeable T-rings)
• Focuser: 2.5" Rack & pinion, dual-speed, 1:10
• Recommended Flatteners: WO Flat 6A III
• Finder Foot: Vixen
• Folded Tube Length: 330 mm
• Extended Tube Length: 420 mm
• Tube Weight: 2.83 kg
• Tube Finish: White-Gold

Kit Components:

• William Optics Zenithstar 73 III APO refractor
• Vixen mounting plate
• Bahtinov mask with mount
• Mounting bracket
• Transport bag
• Mounting clamps

Warranty:

Enjoy a 24-month warranty, providing peace of mind with your Zenithstar 73 III.

Whether you're an aspiring astrophotographer or a dedicated stargazer, the William Optics Zenithstar 73 III is designed to elevate your celestial observations and deliver unmatched performance. Begin your journey through the universe with this exceptional telescope and experience the night sky like never before.