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Click on Images to Zoom  Vixen Optics ED103S - 103mm Refractor Telescope OTA [5865] Retail Price: $2,059.00 CDN About the Vixen ED103S - 103mm Refractor Telescope OTA... The newly designed high definition ED lens on the Vixen ED103S Refractor Telescope gives excellent optical performance with a short optical tube for easy handling. The new ED lenses feature brighter images from the shorter f/7.7 focal ratio and capture crisp, pinpoint star images for your eyes enjoyment. The new ED glass produces clear and high contrast viewing, virtually free of false color. The design on the Vixen ED103S uses newly developed, environmentally friendly glass technology, free of hazardous lead that helps to support a cleaner global environment. The optical tube comes equipped with a metal carry handle for easy one-hand carrying. Coupled with a medium f/7.7 focal ratio, the ED "S" series new lenses focus the full visible spectrum of visible light to a critical point much more accurately than past ED product. The ED103S - 103mm Refractor Telescope OTA lenses are almost free of chromatic aberration in all colors and are critically sharp edge to edge. The astro-photographer will be especially pleased with the high contrast images through this telescope. Vixen finishing touches include carry handle, new Dual Speed Focuser - now standard on the ED103, provides fine focus adjustments for 1/7th speed focusing - and 90mm tube rings. Vixen ED103S - 103mm Refractor Telescope OTA Features... Objective diameter of 4.1" (103mm) which operates at a focal ratio of f/7.7 Short tube length of 31.5" (800mm) and tube weight of 7.9 lbs (3.6 kg) Provides 5.9" (150mm) of backfocus and can produce 4" (101.4mm) of backfocus with optional reducer Standard Dual Speed Focuser allows for fine focus adjustments for 1/7th speed focusing Produces sharp, color-free, high contrast images for both visual and photographic applications - without unwanted color or "blooming" around bright stars. New lenses focus the full visible spectrum of visible light to a critical point much more accurately than past ED product ED103S lenses are almost free of chromatic aberration in all colors and are critically sharp edge to edge Astro-photographers will enjoy the high contrast images through this telescope Vixen ED103S - 103mm Refractor Telescope OTA Specifications... Optical Design: ED Apochromatic Refractor Aperture: 103mm Focal Length: 795mm Focal Ratio: f/7.7 Coating: Multi Coating Resolving Power: 1.13 arc sec Limiting Magnitude: 11.8 Light Gathering Power: 217x Finder Scope: Optional Focuser: Dual Speed Adapter Thread: 60mm/50.8mm Astrophotography: Prime Focus, Eyepiece Projection & Afocal Imaging Visual Back: Compression Ring Optical Tube Length: 31.8" (810mm) Optical Tube Diameter: 4.5" (115mm) Optical Tube Weight: 8 lb Accessories Provided: Tube Rings Available Accessories: Flip Mirror Diagonal; Dovetail Plate; 7x50 Finder Scope; Carry Handle Vixen Product Number: 5865