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Vixen - 100mm ED100Sf (f/9) ED Apochromatic Refractor Telescope Optical Tube Assembly - (Dual focuser) --- Comes ONLY with ring and dovetail - DISCONTINUED

Model#: 5862

Discontinued Product

Manufactured by: Vixen


This is a discontinued item. We recommend the Vixen ED100Sf 100mm ED Apochromatic Refractor OTA as a replacement.

Note: Some accessories shown in photo may not be included - contact us with any questions.



Vixen - ED100Sf 100mm ED Apochromatic Refractor Telescope OTA

  • Design: Refractor ED Apochromatic
  • Objective Diameter: 100mm
  • Focal Length: 900mm(f/9.0)
  • Focuser: 2" Dual-Speed Rack and Pinion
  • Built in Dew Shield
  • Rings and Dovetail Plate
  • Weight 8.2 pounds


The ED 100Sf is now available for the first time in the US. It is the big brother of our best selling ED80Sf.  The ED 100Sf is now available with Vixen's Dual Speed Focuser.  Vixen's apochromatic refractor has an extra-low dispersion (ED) lens which depresses residual aberration to ahcieve a high level of performance.  Coupled with a medium f/9.0 focal ratio, the ED "S" series provides sharp, high contrast color-free images.  For the astronomer that wants the best value for the dollar in a 4” APO, this is the one to get.

The Vixen Optics ED100Sf is an excellent choice for an amateur astronomer wanting the best value in a 4" apochromatic refractor telescope.  It travels well, as a relatively compact unit, and doubles as a great terrestrial spotting scope from stationary positions or for very short hikes.

The ED100Sf offers similar high quality glass and workmanship that Vixen Optics incorporates into their larger instruments.  Because of its apochromatic refractor optical design, images are free from chromatic aberration, and it renders high resolution planetary, lunar, and deep-sky visual images.  The 4" aperture combined with the ED glass means you can expect brilliant high-magnification planetary views as well as good nebula and galaxy observing.

The ED100Sf is immediately ready for imaging; you can attach a Vixen T-mount directly to the focuser, but more commonly it is possible to use the included flip mirror with a T-mount on the back.

The ED100Sf comes complete with tube rings and a dovetail mounting plate that joins the tube rings together and attaches to any Vixen mount or to Celestron's CG-5 or Meade's LXD75 mounts. 


vixen refractor apochromatic ed dispersion glass telescope optical tube ota lagoon nebula ed100sf

 M8 by Mark Nicholas  Orion's Sword by Mark Nicholas  Moon by Mark Nicholas




Additional Information

Name Vixen - 100mm ED100Sf (f/9) ED Apochromatic Refractor Telescope Optical Tube Assembly - (Dual focuser) --- Comes ONLY with ring and dovetail - DISCONTINUED
Manufacturer Vixen
Model 5862
Discountinued Yes
Aperture 3.94" (100mm)
Focal Length 35.4" (900mm)
Focal Ratio f/9
Light Gathering Power 204x
Limiting Stellar Magnitude 11.8
Optical Design ED Apochromatic Refractor