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76mm ID Orion Telescope Tube Rings

  • Set of two cast-aluminum telescope tube rings with quick-release, hinged clamp knobs and felt lining

  • Tube rings allow you to securely attach a telescope optical tube to a mount and tripod

  • Sold in sets of two rings with mounting bolts and washers are included

  • One telescope tube ring has 1/4"-20 piggyback camera adapter; the other has a threaded 1/4"-20 socket

  • Inside tube ring diameter is 76mm

307691_1507314562 76MM

$29.99

100mm

100mm ID Orion Telescope Tube Rings

  • Set of two 100mm inside diameter cast-aluminum telescope tube rings with quick-release, hinged clamp knobs and felt lining

  • One ring has 1/4"-20 piggyback camera adapter; the other tube ring has a threaded 1/4"-20 hole

  • Sold in sets of two telescope tube rings with mounting bolts included

  • Use with any Orion equatorial or altazimuth telescope mount - use with some mounts may require a tube ring mounting plate (sold separately)

  • Inside diameter of each tube ring is 100mm - works with telescope optical tubes up to 100mm in diameter

$39.99

116MM

116mm ID Orion Telescope Tube Rings

  • Set of two cast-aluminum telescope tube rings with quick-release, hinged clamp knobs and felt lining

  • One telescope ring has 1/4"-20 piggyback camera adapter; the other has threaded 1/4"-20 acceptor socket

  • Sold in sets of two rings with mounting bolts and washers included

  • Use with Orion EQ-1, EQ-2, AstroView, SkyView Pro, Sirius, or Atlas equatorial mounts and SkyView AZ, VersaGo II, and Teletrack altazimuth telescope mounts

  • Inside diameter of each telescope tube ring is 116mm

$39.99

140mm

140mm ID Orion Telescope Tube Rings

  • 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

$39.99

270042_1485211041 144

144mm ID Orion Telescope Tube Rings

  • Set of two cast-aluminum rings with quick-release, hinged clamp knobs and felt lining

  • One ring has 1/4"-20 piggyback camera adapter; the other has threaded 1/4"-20 hole

  • Sold in sets of two rings. Mounting bolts and washers are included

  • Use with 127mm Mak-Cassegrain

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$39.99

182

182mm ID Orion Telescope Tube Rings

  • Set of two cast-aluminum telescope tube rings with quick-release, hinged clamp knobs and felt lining

  • Use to attach 6" telescope optical tube assemblies to a mount or doevtail mounting plate (sold separately)

  • Sold in sets of two rings

  • One tube ring has 1/4"-20 piggyback camera adapter; the other has threaded 1/4"-20 socket

  • Mounting bolts and washers are included

$49.99

235

235mm ID Orion Telescope Tube Rings

  • Set of two cast-aluminum telescope tube rings with a 235mm inside diameter

  • Each tube ring features a quick-release, hinged clamp knob and felt lining

  • Sold in sets of two rings with mounting bolts and washers included

  • Use with 8" telescope optical tube assembly

  • One ring has 1/4"-20 piggyback camera adapter; the other has threaded 1/4"-20 hole

$59.99

289

298mm ID Orion Telescope Tube Rings

  • Set of two cast-aluminum telescope tube rings with 298mm inside-diameter, quick-release hinged clamp knobs and felt lining

  • Use these tube rings to attach an Orion 254mm f/4.7 reflector telescope optical tube assembly to a mount or dovetail mounting plate

  • One tube ring has 1/4"-20 piggyback camera adapter; the other has threaded 1/4"-20 hole

  • For use with 10" (254mm) f/4.7 reflector optical tube assembly. Not compatible with Orion 10" f/3.9 Newtonian Astrograph Reflector. See compatibility table below.

  • Mounting bolts and washers are included

$89.99