1. Final Announcement: We're Saying Goodbye to AstronomyConnect. Read Our Closing Notice.
Dismiss Notice
New Cookie Policy
On May 24, 2018, we published revised versions of our Terms and Rules and Cookie Policy. Your use of AstronomyConnect.com’s services is subject to these revised terms.

More Views

Antares Adapter Ring to Attach 86mm GSO Focusers to 4.4" ID Telescope Tubes (Synta) # S120

3.0 (1 Reviews) Read Reviews Write Review
Brand Antares
Part Number S120

Product Info

Manufacturer Description

Antares Adapter Ring to Attach 86mm GSO Focusers to 4.4" ID Telescope Tubes (Synta) # S120.

Antares sells a variety of adapters/bushings to attach GSO's refractor focusers to some other telescopes. All adapters are machined out of aluminum and anodized black. Mounting screws are included.

On the telescope side, this adapter is designed to fit inside telescopes with an inside tube diameter of 4.4" (111.8mm). These include several 120mm aperture telescopes made by Synta and sold under the Celestron, Konus, Orion and Sky-Watcher brands.

On the focuser side, this adpater will work ONLY with the following GSO focusers:

Important Note: Before ordering this adapter, please remove the existing focuser on your telescope tube and measure the inside diameter of your telescope tube carefully to ensure that this item will fit.


  • Adapter weight = Xoz
  • Outside diameter on telescope side = Xmm
  • Inside diamter on focuser side = Xmm
  • Total adapter length = Xmm


3.0 (Based on 1 Reviews) 100% of reviewers recommended this product.
Rating Distribution
Sort by
  • Date
  • Rating
  • Useful
    1. Guest

      Skill Level
      Time with Product
      User Notes:
      Review by Denis P.
      May 9, 2018

      3.0 Antares adapter ring




      Looks great but mine was .020 oversize and out of round and would not fit in my tube. Had to go to a machine shop for modification.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    Sort by
    • Date
    • Rating
    • Useful