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

Agena Telescope Tube Rings (Set of 2) - 3.5"

4.7 (15 Reviews) Read Reviews Write Review
Brand Agena AstroProducts
Part Number -
Availability available

Product Info

Manufacturer Description

Rings will fit tubes with an outer diameter of 3.47" - 3.54" (Approx. 88 - 90mm).

These tube rings are high quality, cast-aluminum mounting rings that can be used for mounting telescope tubes on various mounts or on guidescope rails. All rings are hinged, felt-lined and have clamp-style rings for easy mounting or repositioning of the optical tube. Most rings have clamping knobs while a couple of size have clamping clips instead. Please see the photo for this product to determine whether it has a clamping knob or clip.

The base of the rings has a metric 6mm mounting thread. Gunmetal dark gray finish. If the outer diameter (OD) of the telescope is a little smaller than the inner diameter (ID) of the rings, you can shim the inside of rings with extra felt (not included). Price shown is for a set of 2 rings.

Reviews

4.7 (Based on 15 Reviews) 93% of reviewers recommended this product.
Rating Distribution
Sort by
  • Date
  • Rating
  • Useful
    1. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Bruce H.
      1550804816
      Feb 21, 2019

      5.0 3.5” cradle rings

      Pros:

      Cons:

      Comments:

      I bought these rings to secure an Orion ST80 scope. These rings and the bolts that secure them are sturdy. When you are evaluating dovetails be sure that the hole size and spacing between holes will accommodate the size of the bolts and where the rings need to be located to support your scope.

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

      This review was provided courtesy of AgenaAstro.com

    2. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by James J.
      1536984637
      Sep 14, 2018

      5.0 Well made

      Pros:

      Cons:

      Comments:

      These rings fit my Meade Infinity 80mm perfectly.

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

      This review was provided courtesy of AgenaAstro.com

    3. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by William J.
      1536983626
      Sep 14, 2018

      5.0 better than amazon prim

      Pros:

      Cons:

      Comments:

      fast shipping and the tube rings fit nice and snug on my Orion st80 at a good t price

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

      This review was provided courtesy of AgenaAstro.com

    4. bladekeeper

      bladekeeper Active Member

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Bryan G.
      1536034462
      Sep 3, 2018

      5.0 Great rings!

      Pros:

      Cons:

      Comments:

      I've bought two sets of these over time to accommodate two older Celestron C80 telescopes. They fit perfectly, allowing me to use these scopes with a variety of mounts. Coupled with an 8" dovetail bar, they are perfect for my use.

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

      This review was provided courtesy of AgenaAstro.com

    5. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by James S.
      1529342038
      Jun 18, 2018

      5.0 perfect for 80mm scope

      Pros:

      Cons:

      Comments:

      Best price for tube rings to fit an 80mm refractor guidescope. Fits well.

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

      This review was provided courtesy of AgenaAstro.com

    6. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by William K.
      1522990303
      Apr 5, 2018

      5.0 90mm rings fit my C80ed perfectly!

      Pros:

      Cons:

      Comments:

      I replaced the clamshell that came with my C80ed telescope,and these rings were perfect! Light and stable!

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

      This review was provided courtesy of AgenaAstro.com

    7. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by William T.
      1519616546
      Feb 25, 2018

      5.0 As advertised.

      Pros:

      Cons:

      Comments:

      The rings are made of heavy material with a good weather protecting coating. Size is as advertised. These rings are exactly what I needed.

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

      This review was provided courtesy of AgenaAstro.com

    8. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Joseph V.
      1509158364
      Oct 27, 2017

      4.0 Nice tube rings.

      Pros:

      Cons:

      Comments:

      Purchased these rings to mount my 80mm refractor. Rings are sturdy and secure my scope firmly. Only con I can find is the bolts supplied for mounting were too short. Had to purchase a pair of bolts at local hardware store for $1.25. Not a big deal but an unnecessary hassle.

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

      This review was provided courtesy of AgenaAstro.com

    9. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by keith c.
      1508710412
      Oct 22, 2017

      5.0 works for me

      Pros:

      Cons:

      Comments:

      there were no big issue(s) with the rings....except the mounting screws are to long and the head was thick for my Farpoint vixen clamps, nothing that trip to Home Depot could not fix...The Omegon 80mm St fit like a glove, shipping was very fast.....

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

      This review was provided courtesy of AgenaAstro.com

    10. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by AtomB of Phoenix, AZ.
      1424736000
      Feb 23, 2015

      3.0 Good alternative to clamshells

      Pros:

      Lightweight

      Cons:

      Comments:

      Bought to replace the clamshell on my C80ED. I gave 3 stars because of the clamping hardware; the hand knobs and threaded sections are a lower quality than what you get with the typical Synta rings included with many telescopes. Pluses = lightweight, perfect fit and nice to have piggyback mount for AP.

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

      This review was provided courtesy of AgenaAstro.com

    11. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Max Headroom of Vail, AZ.
      1422662400
      Jan 30, 2015

      5.0 Very Handy

      Pros:

      Strong Construction,Easy to Use,Lightweight

      Cons:

      Comments:

      I use these rings to attach a 90mm refractor to a dovetail plate. The fit is perfect. I can use the telescope-plate combination on 4 different mounts that take a Vixen plate. The rings also have point to attach accessories. Very useful. I have a finder on mine.

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

      This review was provided courtesy of AgenaAstro.com

    12. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by wordupjackson of Fullerton, CA.
      1415750400
      Nov 11, 2014

      4.0 Great fit

      Pros:

      Cons:

      Felt Pads Sloppy

      Comments:

      Fits my ST80 great. The placement of the felt pads was done sloppily, but were easy to reposition. Fast shipping as always.

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

      This review was provided courtesy of AgenaAstro.com

    13. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by michel of Durham.
      1335916800
      May 1, 2012

      5.0 Nice rings

      Pros:

      Easy to Use,Strong Construction

      Cons:

      Comments:

      Put on 500mm lens to hold flash extender

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

      This review was provided courtesy of AgenaAstro.com

    14. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Gilles of Quebec.
      1330128000
      Feb 24, 2012

      5.0 I saved about a hundred dollars buying

      Pros:

      Accurate,Strong Construction,Easy to Use

      Cons:

      None

      Comments:

      I saved about a hundred dollars buying those instead of the ones made especially for my Megrez. They fit perfectly and I have nothing bad to say. Not the last thing I will buy from Agena.

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

      This review was provided courtesy of AgenaAstro.com

    15. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Jim of Sahuarita, AZ.
      1306627200
      May 28, 2011

      5.0 3.5" Telescope mounting rings

      Pros:

      Accurate,Strong Construction

      Cons:

      Comments:

      These rings were used to mount a 3" F12.6 refractor to a commercial tripod and drive. They were easy to install and worked fine.

      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