William Optics

ZenithStar 73 III f/5.9 Doublet APO


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  • Regular price $713.00

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Zenithstar 73 III is a greatly versatile and portable refractor telescope for beginners and veterans alike. Designed for both astrophotography and wildlife photography, high power visual observing through the Zenithstar 73 is also hugely satisfying. The image is crisp, sharp and color aberration free thanks to the use of top quality glass — FPL-53. The 43mm image circle when Flat73 is used covers a full-frame size sensor nicely. 

Aperture 73 mm (2.75")
Focal Length 430 mm
Focal Ratio f/5.9
Glass Type FPL-53
Manufacturer William Optics
Optical Type Doublet
Tube Length 310mm
Tube Weight 2.5kg (5.5lb)
Weight 5.5 lbs.

Package includes:

  • Z73 III APO
  • Innovative Bahtinov Mask
  • Handle with integrated guide scope shoe.
  • Vixen style Dovetail
  • Soft Carry Case