William Optics ZenithStar 61II Doublet Refracting Telescope - Red

Brand: William Optics


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  • 61 mm (2.41-inch) Aperture.
  • f/5.9 Focal Ratio.
  • 3.2 lb - Travel Telescope for Astrophotography and Wildlife Photography.
  • Adaptable with any DSLR.
  • This is the Red Version
  • Innovative Bahtinov Mask Cover for Easy Focus Assist.
  • Soft Carry Case Included!

Product Details

  • Bright and colorful yet smaller than a house cat, the William Optics ZenithStar 61II is one of the most portable telescopes on the William Optics market. Weighing only about 3 lb, you can easily take it with you anywhere!

    Your telescope’s lens captures true-to-color light and create images with reduced chromatic aberration. It’s designed with FPL-53 glass, which is a form of synthetic fluorite in the closest form to pure fluorite. Capture mesmerizing images with brighter and crisper viewing features.

    When combined with a field flattener, this telescope can capture images like those of larger professional telescopes.

    Williams Optics ZenithStar 61II Special Features

    • The full-frame sensor size is approximately 36X24.
    • A 41 mm diameter image circle.
    • The Focuser is 50.8 mm (2-inch), rack and pinion, with 10:1 dual-speed micro focuser and a 75 mm travel length.
    • A rotatable L mounting bracket.
    • The tube length has a range of 230 mm when fully retracted, and 300 mm when fully extended.
  • specifications

    Aperture61 mm (2.5")
    Camera/Eyepiece Connection1.25" Compression Rings
    Dawes Limit1.9 arcseconds
    Focal Length360mm
    Focal Ratiof/5.9
    Free ShippingYes
    Glass TypeFPL 53
    Highest Magnification122x
    Light Gathering Power76x
    Limiting Magnitude12.7
    Optical DesignDoublet Refractor
    Tube Length230mm
    Tube Weight3.2 lbs
  • included items

    • William Optics ZenithStar 61 f/5.9 Doublet Refracting OTA.
    • Patented Bahtinov Mask Cap Design.
    • Rack and Pinion Focuser 50.8 mm (2-inch), 1:10 Dual Speeds, with 75 mm Travel Length.
    • CNC Made Mounting Ring.
    • CAT Handle Bar.
    • 210 mm Dovetail Plate.
    • Soft Carry Case

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