William Optics Zenithstar 73mm f/5.9 Full Frame Imaging Apo Refractor: Red # A-Z73RD

Our Price: $588.00
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In Stock (2 Available)
Ships by Next Business Day
Our Product ID: T-WO-A-Z73RD
Manufacturer SKU: A-Z73RD
Item Can Ship: Worldwide
William Optics Zenithstar 73mm f/5.9 Full Frame Imaging Apo Refractor: Red # A-Z73RD

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Quick Overview

  • William Optics Zenithstar 73 apo refractor with FPL-53 ED 73mm objective and fast f/5.9 focal ratio
  • Ideal for use with full-frame DSLRs or astronomy cameras
  • Includes 2.5” two-speed focuser with integrated thermometer, mounting rings, guide rings and Vixen rail
  • Compact and lightweight
  • Ideal for imaging extended nebulae, galaxies, and star fields

Product Details

The William Optics Zenithstar 73 f/5.9 full-frame apochromatic refractor features an air-spaced multicoated doublet objective lens and the premium mechanics and finish that’s typical of William Optics scopes. The objective features Ohara FPL-53 ED glass for superb control of false color and sharp, high-contrast images. The Zenithstar 73 makes an ideal match for full-frame DSLRs and astronomy cameras to give you a wide field of view when imaging the terrestrial sights or the night sky.

With a focal ratio of f/5.9 and focal length of 430nm, the WO Zenithstar 73 is the perfect instrument for imaging extended objects such as the California Nebula, the Rosette Nebula, the Veil Nebula, the Sword and Belt of Orion, and the Andromeda Galaxy. Yet the scope is compact enough to work with nearly any medium-duty equatorial mount. It weighs just 2.5kg (5.5lbs) and measures 310mm with the dew shield retracted. A two-speed 2.5” rack-and-pinion focuser lets you easily achieve and hold sharp focus with full-frame cameras. One focuser knob even includes an integrated thermometer to help you track small temperature changes that might affect focus during your imaging sessions.

The WO Zenithstar 73 comes with mounting rings, rings for a guide scope, and a Vixen rail for mounting. The optional FLAT73 full-frame field flattener is highly recommended for this scope to help you get sharp images to the edge of the field.

New Features:

  • Apochromatic Japanese Ohara FPL-53 Glass
  • Guiding Rings
  • New Mounting Rings Design for greater ease of use
  • Retracted Length: 310mm
  • Weight: 5.5lb (2.5kg)

What's in the Box:

  • ZenithStar 73 f/5.9 FPL53 Doublet APO
  • 2.5" R&P Focuser
  • Mounting Rings
  • Guiding Rings
  • Vixen-style Dovetail