Cloud Break Optics

ZenithStar 73 APO (A-Z73III)

ZenithStar 73 APO (A-Z73III) - Main image
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$467.2 $730 In stock

Category: Refractor Telescope

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
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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Adam X. ★★★★★

Swapped out my old scope for this one, and the difference in clarity is immediate—the fully multi-coated optics really pull in faint nebulae without any false color. The carrying handle built into the tube makes it easy to grab and go for quick sessions.

Leo H. ★★★★★

The dual-speed focuser is buttery smooth, making fine adjustments a breeze. I’ve had it out on a few moonlit nights and the contrast is noticeably better than my old scope.

Hazel ★★★★★

I was worried about chromatic aberration with a smaller scope, but the FPL-53 glass keeps stars pin-sharp right to the edge of the field. The carrying case that comes with it is also surprisingly well-padded for the price.

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