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William Optics NEW ZenithStar 73 III f/5.9 OTA. FPL53 doublet APO, 2" focuser Refractor
William Optics NEW ZenithStar 73 III f/5.9 OTA. FPL53 doublet APO, 2" focuser Refractor

William Optics NEW ZenithStar 73 III f/5.9 OTA. FPL53 doublet APO, 2" focuser Refractor

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Your Price: CAD899.00
Usually ships in 5-7 business days, if on backorder ETA 4-6 Weeks
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A-Z73IIIRD ZenithStar 73, f/5.9 OTA. FPL53 doublet APO, 2.5” R&P Focuser in Red.
A-Z73IIIGD ZenithStar 73, f/5.9 OTA. FPL53 doublet APO, 2.5” R&P Focuser in Gold.
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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 colour aberration free thanks to the use of top quality glass — FPL53, closely matching the legendary fluorite material. The 43mm image circle when Flat73 is used covers full frame size sensor nicely.

    Specifications




    Optical system Air-spaced doublets with 1 FPL-53 fluorite element
    Aperture 73 mm
    Focal length 430 mm
    Focal ratio f/5.9
    Image circle

    Full frame corrected field with Flat73A, Flat73R

    Resolution 1.83 arcseconds
    Limiting magnitude 12.9
    Light gathering power 109x
    OTA length

    330 mm (fully contracted)

    420 mm (fully extended)

    Weight2.83 kg
     
    In the Box
    • Z73 Doublet Air-Spaced APO with synthetic fluorite FPL-53 extra low dispersion glass
    • 2.5" Rack & Pinion focuser with 10:1 micro adjustment
    • Mounting Rings
    • CNC Handle Bar with Vixen style quick release or guidescope
    • Vixen style dovetail bar
    • 2" to 1.25" adapter with brass compression ring
    • Retractable lens shade
    • FREE WO patented Diffraction Spikes Bahtinov Mask Cap
    • FREE high quality soft carrying bag


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