Vixen AX103S OTA ES26144 — 103 mm SD Apochromatic Refractor Optical Tube Assembly

Vixen

Price: $3,723.99 USD
List Price:
Price: $3,723.99 USD
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The Vixen AX103S OTA ES26144 is a flagship-class 103 mm SD apochromatic refractor optical tube designed for high-quality visual astronomy and astrophotography. Its advanced optical design delivers crystal-clear, high-contrast images with minimal chromatic aberration — perfect for observing the Moon, planets, star clusters, nebulae, and deep-sky objects, or for detailed imaging.

The 825 mm focal length (f/8) provides a versatile balance between wide-field views and capable magnification. A built-in field-corrector lens ensures sharpness across the entire frame, which is especially beneficial for astrophotography. The OTA comes with a dovetail mounting plate, tube rings, flip-mirror diagonal, and an illuminated 7×50 mm finderscope for easy setup and mount attachment.

Features & Benefits

  • Premium SD-glass apochromatic optics — 103 mm triplet lens delivers sharp, true-color, high-contrast images with minimal chromatic aberration.

  • Flat, wide, aberration-free field — Field-corrector lens keeps stars sharp even at the edges of the field.

  • Optimized light transmission — Multicoated optics enhance brightness and contrast for visual and imaging use.

  • Versatile eyepiece and imaging support — Accepts 2″ eyepieces (with 1.25″ adapter) and supports prime-focus, eyepiece-projection, or afocal astrophotography with T-ring adapters.

  • Complete optical tube package — Includes dovetail plate, tube rings, flip-mirror diagonal, carry handle, and 7×50 finderscope.

  • Balanced for imaging and visual use — 825 mm focal length is wide enough for nebulae and star fields, yet long enough for lunar and planetary details.

Specifications

Spec Detail
Optical Design SD apochromatic refractor (triplet SD lens, multicoated)
Aperture 103 mm
Focal Length / F‑Ratio 825 mm / f/8.0
Resolving Power / Limiting Magnitude ~1.13 arc‑sec / ~11.8 mag
Light-Gathering Power ~217× naked eye
Optical Tube Dimensions 115 mm diameter × 762 mm length (retractable to ~670 mm)
Total Weight 6.4 kg (tube + components), net tube approx. 4.6 kg
Eyepiece / Focuser 2″ focuser (1.25″ adapter supported), flip-mirror diagonal; includes visual back threads for T-ring or camera adapters
Finder Scope 7×50 mm illuminated
Included Accessories Dovetail plate, tube rings, carry handle, flip-mirror diagonal, 7×50 finderscope
Imaging Capability Prime-focus, eyepiece projection, afocal imaging supported

Frequently Asked Questions

With a beginner telescope you can see a surprising amount — the craters and mountains on the Moon, the rings of Saturn, the moons of Jupiter, and star clusters like the Pleiades. As you get more comfortable, you can also spot nebulae and distant galaxies. Not sure which beginner telescope is right for you? Check out our Telescope Buying Guide.
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All telescopes on Telescope Wolves are hand-picked with beginners in mind. If you're unsure which telescope is right for you, check out our Telescope Buying Guide.
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