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Orion USA 140 mm Tube Rings

Orion USA 140 mm Tube Rings
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Price:  £39.00(Inc. 20% VAT)
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Product Code:  O07373
Manufacturer:  Orion USA


Set of two rings includes mounting bolts and washers.

  • Set of two cast-aluminum telescope tube rings with quick-release, hinged clamp knobs and felt lining
  • Inside tube ring diameter is 140mm, use with telescope optical tubes up to 140mm in outer diameter
  • Sold in sets of two rings
  • Mounting bolts and washers are included
  • One ring has 1/4"-20 piggyback camera adapter; the other has threaded 1/4"-20 hole

Orion's cast-aluminum tube ring set features quick-release, hinged clamp knobs and felt lining. Designed for use with Orion telescope mounts, they fit some other brands of mounts as well. One of the two rings in the set has a 1/4"-20 piggyback camera adapter on it, the other has a threaded 1/4"-20 hole. The piggyback camera adapter can be removed for mounting an adapter plate for a guide scope on top of the tube rings. For use with SkyView Pro or Atlas telescope mounts, you will also need a dovetail mounting plate.

 

Set of two rings includes mounting bolts and washers. Inside diameter (ID) is listed. Choose the size that matches the outside diameter of your telescope tube. See compatibility table below.

Tube Ring Reference Table
Item #Ring Inside Diameter (ID)Rings Fit
736976mm/3.0"Orion Observer 70 refractor telescope
737090mm/3.5"Orion AstroView/Explorer 90 Refractor Telescopes, Orion ShortTube 80 Refractor Telescope, 80mm f/11 telescope optical tube assembly
7371100mm/3.9"Orion AstroView 100 Refractor Telescope, StarMax 90, Orion SkyView Pro 100mm Refractor Telescopes, Orion 80mm ED Refractor Telescopes, 100mm f/6 telescope optical tube assembly
7372116mm/4.6"Orion Apex 102 Maksutov-Cassegrain Telescope, Orion AstroView 120/120ST Refractor Telescopes, 120mm f/5.0 and f/8.3 telescope optical tube assemblies
7373140mm/5.5"Orion ShortTube 4.5 Reflector Telescope, Orion StarBlast 4.5 Astro Reflector Telescope
7374144mmOrion Apex/StarMax 127 Maksutov-Cassegrain telescopes, Orion SkyView Pro 127 Maksutov-Cassegrain Telescope
7375182mm/7.2"Orion SkyView Pro 6 and 6LT reflector telescopes, 150mm f/8.0 telescope optical tube assembly
7376235mm/9.25"Orion SkyView Pro 8 Reflector Telescope, Orion Atlas 8 Reflector Telescope, 203mm f/4.9 telescope optical tube assembly
7377298mm/11.7"Orion Atlas 10 Reflector Telescope, 254mm f/4.7 telescope optical tube assembly

Notes for Selecting Tube Rings:

Outer diameter (OD) of the telescope should match inner diameter (ID) of rings. If OD of the telescope is a little smaller than ID of the rings, that is OK; you can "shim" inside of rings with extra felt.

The column labeled "Rings Fit" can be used as a guide for selecting appropriate rings if you don't know the OD of the telescope.

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