Our company is involved in preparing official permits from the Polish Ministry of Development and Technology, which allows us to export all dual-use drones, optics, and portable radiophones without VAT on the Polish side / and without VAT on the Ukrainian side.
William Optics Zenithstar 73 III GD / Gold (SKU: A-Z73IIIGD)
679.14 $ net price (non-EU countries)
100% secure payments
Anatolii Livashevskyi
Product Manager
/ 
+48721808900
+48721808900
+48721808900
[email protected]
Olesia Ushakova
Product Manager /
+48695005004 +48695005004 +48695005004
[email protected]
Description
William Optics, a renowned company in the field of telescopes, presents the Zenithstar 73 III, the third installment of one of their most iconic products. This compact and luminous telescope boasts exceptional optical parameters and impeccable craftsmanship, making it a perfect choice for both astrophotography and visual observations, guaranteeing breathtaking images.
At the heart of this refractor lies an apochromatic doublet optical system with an air gap. It features a lens made of FPL-53 glass, produced by the esteemed Japanese company Ohara. This material exhibits an extraordinarily high Abbe number of ±94.49, indicating extremely low dispersion similar to fluorite glass. Furthermore, all lenses are coated with a multi-layer anti-reflective coating, ensuring sharp and high-contrast images.
The Zenithstar 73 III's large illumination disc diameter makes it an ideal device for use with cameras and SLR cameras equipped with full-frame sensors, as well as APS-C matrices.
Key Features of the William Optics Zenithstar 73 III APO Refractor:
- Apochromatic doublet constructed from optical glass, including FPL-53, with a multi-layer anti-reflective coating.
- CNC-fabricated fasteners for durability and precision.
- William Optics' patented Bahtinov mask design with a convenient handle.
- Full illumination circle ensuring complete coverage of the full-frame matrix.
- Lightweight and compact design for easy transportation.
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: Optical glass with FPL-53 (Ohara, Japan)
- Anti-reflective Coating: Full multi-layer coating (FMC)
- Full Illumination Circle Diameter: Full coverage of a full frame
- Compatible Sensor Sizes: APS-C, full frame
- Compatible Photographic Systems (via interchangeable T-rings): Canon EF, Nikon F, Sony E, Pentax, Micro 4/3, Fuji FX
- Focuser: 2.5"
- Type of Eyepiece Extractor: 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's mask with mount
- Mounting bracket
- Transport bag
- Mounting clamps
Warranty:
Enjoy peace of mind with a 24-month warranty on the Zenithstar 73 III.
The Zenithstar 73 III from William Optics is a testament to the company's commitment to innovation and quality. Whether you're an avid astrophotographer or an enthusiastic stargazer, this telescope is sure to enhance your experience and deliver exceptional performance. Embark on a celestial journey with the Zenithstar 73 III and witness the wonders of the universe like never before.
Data sheet
Official permits of the Ministry of Development and Technology
Our company is involved in preparing official permits from the Polish Ministry of Development and Technology, which allows us to export all dual-use drones, optics, and portable radiophones without VAT on the Polish side / and without VAT on the Ukrainian side.