Vixen Optics ED81S 80mm f/7.7 Apochromatic Refractor Telescope (OTA Only)

Vixen Optics ED81S 80mm f/7.7 Apochromatic Refractor Telescope (OTA Only)

Vixen Optics ED81S 80mm f/7.7 Apochromatic Refractor Telescope (OTA Only)

B&H # VIED81SRT MFR # 26082
Vixen Optics ED81S 80mm f/7.7 Apochromatic Refractor Telescope (OTA Only)

Vixen Optics ED81S 80mm f/7.7 Apochromatic Refractor Telescope (OTA Only)

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Product Highlights

  • 81mm (3.2") Apochromatic Refractor
  • 625mm Focal Length, f/7.7 Focal Ratio
  • Anti-Reflection Fully Multicoated Optics
  • Extra Low-Dispersion (ED) Glass Lens
  • 1.25" Rack-and-Pinion Focuser
  • 90° Flip Mirror Diagonal
  • Red Dot Finderscope
  • Mounting Ring Set with Carry Handle
  • Mount and Tripod Required
  • Made in Japan
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This product may contain mercury. Consult your local environment authorities for regulations regarding how to properly dispose of products containing mercury.

Price: $1,099.00

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  • 1Description

Vixen Optics' ED81S 80mm f/7.7 Apochromatic Refractor Telescope is an ideal optic for both celestial observation and astrophotography. Optically, it is designed with a fully multi-coated, apochromatic extra low-dispersion (ED) lens system that corrects both spherical and chromatic aberrations. This correction creates a wide flat field of view without distortion and removes the blue-tinted "halo" affect for true high-contrast color transmission. The optical tube assembly is made in Japan.

The scope can be used for multiple astrophotography techniques included prime-focus, afocal imaging, or eyepiece projection. A traditional rack-and-pinion focuser, with adapter rings, is employed to be able to handle the heavier loads of astrophotography rigs, and can accept 1.25" eyepieces and accessories for making visual observations. Vixen includes a flip-mirror diagonal that allows the use of two different eyepieces for observational flexibility, or an eyepiece and imaging system that lets users simply flip the mirror to check alignment and tracking accuracy between exposures without having to touch the imager. While the OTA is offered here without a mount or tripod, a Vixen-style dovetail plate that fits on compatible saddles is included, along with a mounting ring assembly with an integrated carrying handle to make set up and breakdown easier.

Optical Performance
  • 81mm aperture
  • f/7.7 focal ratio
  • 625mm focal length
  • Refractor optical system
  • Anti-reflection multi-coated optics improves light transmission for brighter, high-contrast images
  • Apochromatic lens configuration corrects for spherical and chromatic aberration to produce distortion-free images with accurate color representation
  • Extra low-dispersion (ED) glass elements correct for chromatic aberration to increase true color fidelity and improved contrast
  • Resolution: 1.43 arc sec
Mounting
  • OTA only, requires user-supplied mount and tripod
  • Included tube ring
    • Set of two rings
    • Integrated Vixen-style dovetail plate
Focuser
  • Sturdy rack-and-pinion style
  • 60mm mounting thread for push-fit holder or threaded accessories
Included Accessories
  • Red-dot finderscope
  • Diagonal:
    • 90° flip mirror with two 1.25" eyepiece holders
    • 42mm thread on straight-view for optional T-ring or other imaging accessories
In the Box
Vixen Optics ED81S 80mm f/7.7 Apochromatic Refractor Telescope (OTA Only)
  • Red-Dot Finderscope
  • Flip-Mirror Diagonal
  • Dovetail Mounting Plate
  • Carrying Handle
  • 2 x Tube Rings
  • Limited Five-Year Warranty
  • Table of Contents
    • 1Description
    Optical Design Refractor
    Aperture 3.2" / 8.1 cm
    Focal Length 625 mm
    Focal Ratio f/7.7
    Eyepiece Barrel Diameter 1.25"
    Diagonal 90° flip
    Finderscope Red dot
    Tripod None
    Mount Type Vixen-style dovetail plate
    Power Source N/A
    Optical Tube Dimensions Length : 23.0" / 58.5 mm
    Tube diameter: 3.5" / 9.0 cm
    Dew-shield diameter: 100 mm
    Weight 5.1 lb / 2.3 kg
    Packaging Info
    Package Weight 9.6 lb
    Box Dimensions (LxWxH) 24.8 x 10.7 x 7.8"

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