Vixen SD81SII 81mm f/7.7 Super ED Apochromatic Refractor Telescope

Refined Optics for Stunning Starry Nights

Dream of capturing stunning celestial views? The Vixen SD81SII delivers professional-grade clarity, refined optics, and seamless DSLR compatibility for astrophotographers. Whether you're stargazing or taking breathtaking photos of the night sky, this telescope is your ideal companion.

Features

• Super ED Apochromatic Optics: Minimize chromatic aberration with FPL53 super extra-low dispersion glass for sharp, high-contrast visuals across the visible spectrum.
• Refined Star Diffraction Patterns: Innovative ring spacer design ensures even, symmetrical star diffraction patterns, making it perfect for astrophotography. The SD81SII improves upon the previous model by replacing tin foil spacers with a ring spacer, eliminating light obstruction for superior star images.
• Lightweight & Portable Design: At only 7.9 lbs and 585mm in length, this telescope is compact and easy to transport, ensuring convenience without compromising performance.
• Dual-Use Flip Mirror Diagonal: Switch effortlessly between visual observation and photography with the built-in flip mirror. Alternate seamlessly between eyepieces and camera setups.
• DSLR Compatibility for Full-Frame Imaging: Achieve stunning DSLR photos with optional SD reducer or flattener kits that create a 44mm image circle. Perfect for astrophotographers seeking precision.
• Exceptional Light Gathering Power: Capture 134x more light than the unaided eye, revealing celestial details with remarkable clarity. Ideal for observing dim objects like faint star clusters and nebulae.
• Advanced Focusing Mechanism: Features a rack-and-pinion focusing system with a lock knob for stable, precise adjustments during long-exposure astrophotography.
• Versatile Imaging Techniques: Supports prime focus (deep-sky imaging), eyepiece projection (planetary imaging), and afocal imaging (casual snapshots), catering to all levels of astrophotographers.
• High Contrast Imaging: The SD lens suppresses chromatic aberration and g-ray (violet light), ensuring outstanding contrast for both visuals and photographs.
• User-Friendly Setup: Includes a metal carry handle and Vixen dovetail slide bar for quick assembly and disassembly, saving time and simplifying setup.

Technical Specifications

• Aperture: 81mm (3.2")
• Focal Length: 625mm
• Focal Ratio: f/7.7
• Resolution: 1.43 arc seconds
• Limiting Magnitude: 11.3
• Adapter Threads: 60mm and 42mm for T-rings
• Visual Back: 50.8mm and 31.7mm push fit with flip mirror diagonal
• Finder Scope: XY Red Dot Finder II (1x aiming device)
• Dimensions: 90mm diameter, 585mm length
• Weight: 7.9 lbs (3.6 kg)
• Light Gathering Power: 134x the unaided eye

The Vixen SD81SII is for you if…

• You’re an Astrophotographer Seeking Perfection: Minimized chromatic and spherical aberrations ensure breathtaking celestial images.
• You Value Portability Without Compromising Power: Its lightweight and compact design is perfect for remote observation spots.
• You’re a Visual Astronomer Looking for Precision: Enjoy crisp, high-contrast visuals of stars, planets, and nebulae.
• You Use DSLR Cameras for Astrophotography: Seamlessly integrate your DSLR for versatile full-frame imaging.
• You Appreciate Easy and Flexible Operation: Transition effortlessly between observing and photographing with the flip mirror diagonal.

Why Choose the Vixen SD81SII Telescope?

If you’re passionate about astrophotography or visual astronomy, the Vixen SD81SII is your perfect companion. Its advanced FPL53 Super ED glass virtually eliminates chromatic aberration, ensuring your star images are as sharp and vibrant as the night sky itself. With a refined ring spacer design, you’ll capture stunningly symmetrical diffraction patterns that make every celestial photograph a masterpiece.

Whether you’re shooting full-frame astrophotography or observing the wonders of space, the SD81SII delivers unmatched precision and flexibility. The optional SD reducer or flattener kits expand its imaging capabilities, creating a 44mm image circle that integrates seamlessly with DSLR cameras. Imagine capturing nebulae, galaxies, and star clusters with breathtaking clarity and minimal distortion.

Portability is key for astronomers on the go, and this telescope doesn’t disappoint. At only 7.9 lbs and 585mm long, it’s light enough to take to remote dark sky locations yet powerful enough to reveal details you never thought possible. The built-in metal carry handle and quick-mount dovetail slide bar make setup a breeze, so you can spend more time exploring and less time adjusting.

Ease of use is at the heart of the SD81SII. The flip mirror diagonal allows you to switch effortlessly between eyepieces and a camera, enabling you to observe and photograph without interruption. Whether you’re a seasoned astrophotographer or just starting, the SD81SII is designed to elevate your experience, combining precision optics with user-friendly design.

Don’t let bulky, complex, or subpar equipment hold you back from experiencing the cosmos at its best. With the Vixen SD81SII, you’ll enjoy sharp visuals, high-quality photographs, and unmatched convenience—all in a lightweight, compact package tailored for serious astronomers and astrophotographers like you.

Essential Accessories for Seamless Astronomy

The Vixen SD81SII comes equipped with high-quality accessories to enhance your stargazing and astrophotography experience:

• Flip Mirror Diagonal: Switch between observation and photography effortlessly, alternating between eyepieces or attaching a camera.
• XY Red Dot Finder II: Align your telescope with celestial targets using pinpoint accuracy. Ideal for beginners and advanced users.
• Dovetail Slide Bar M: Secure your telescope with quick and reliable attachment for stability during observations or imaging.
• Instruction Manual: Offers clear guidance to maximize your telescope’s capabilities from the start.

Elevate Your Imaging with These Recommended Accessories

Maximize your SD81SII’s potential with these must-have tools for astrophotography:

• SD Reducer HD Kit: Includes a flattener and a 0.7x reducer lens for a flat, wide imaging field, reducing focal length while maintaining edge-to-edge sharpness. Perfect for expansive celestial views and precise image quality. Works seamlessly with the SD81SII, SD103SII, and SD115SII optical tubes.
• Wide Photo Adapter 60DX: Designed for Nikon DSLR cameras, this adapter minimizes vignetting, ensures flawless integration, and allows flexible camera orientation for perfect framing. Pair it with the SD Reducer HD Kit for professional-grade prime focus astrophotography. Its high precision ensures excellent results even with full-frame DSLR cameras.

With these accessories, you’ll unlock the full imaging capabilities of the Vixen SD81SII, creating breathtaking photos of nebulae, galaxies, and star clusters with ease.