William Optics Zenithstar 103mm f/6.9 Imaging Apo Refractor - Blue # A-Z103BU
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Quick Overview
- Premium 103mm apochromatic refractor for astronomical imaging and visual observation
- Apochromatic f/6.9 doublet objective with FPL-53 glass
- Large image circle for imaging with APS-C and full-frame sensors
- Compact form factor and light weight ideal for transport and travel
- Includes patented clear Bahtinov mask cover, dual-speed 2.5” focuser, Vixen-slotted handle/saddle bar, soft carry case, and dovetail plate, all color matched for an attractive appearance
Product Details
ZenithStar 103 Doublet Apochromatic Refractor
The William Optics ZenithStar 103 is an extremely well crafted and versatile refractor, an ideal instrument for deep sky imaging with DSLRs or dedicated astronomy cameras with APS-C and full-frame sensors. It’s also a great tool for visual observation of a wide range of celestial objects from the moon and planets to nebulae and star clusters and brighter galaxies, as well as for solar observation with a safe solar filter.
The ZS103 features an 103mm f/6.9 FPL 53 air-spaced doublet apochromatic objective lens in a CNC machined ultra-high precision cell. These premium optics provide razor-sharp images and excellent color rendition. When paired with a 0.8x William Optics field flattener and focal reducer (sold separately), the scope works at a fast f/5.5 with a flat field across the entire 43.3mm diagonal of a full-frame sensor.
Premium Build Quality and Compact Form Factor
Like all telescopes from William Optics, the ZenithStar 103 incorporates rock-solid mechanics and built quality. The scope includes high-quality mounting rings to safely and securely hold the telescope to the mount. The rings are anodized to match the color of the handle, dovetail, and focuser, giving the scope an attractive, premium appearance.
With a focal length of 710mm, this f/6.9 telescope has a retracted length of just 615mm (24.2”), compact enough for easy transportation and handling. The tube weighs just 4.4kg (9.7 lbs) including tube rings and dovetail plate.
Heavy-Duty Focuser, Soft Carry Case and Accessories
The William Optics ZS103 features a patented objective lens cover that doubles as clear Bahtinov focusing mask. This makes it a snap to achieve sharp focus when setting up for astrophotography.
The ZS103 also features a heavy duty 10:1 dual-speed 2.5” rack and pinion focuser with tension screws to securely hold a bigger camera and accessories without slipping or image shift, even during longer exposures. The focuser also includes two additional screws to mount an optional red-dot finder.
A convenient CNC-machined carrying handle/saddle bar is mounted on top of the tube rings. This innovative saddle bar features a Vixen/Synta-syle finder slot for the addition of optional red dot finders, optical finder/guidescope brackets, or other accessories. On the bottom of the tube rings is a Vixen-style rail for securing the tube to a mount.
A soft carry case is now also included with this telescope.
All ZenithStar 103 telescopes comes 2-year no-fuss warranty from William Optics.
Other Information
- Country of Manufacture: Taiwan
