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T-Rings, Adapters & Spacers

T-rings, spacers, extensions and thread adapters for building an imaging train — camera bayonets to T2, M42, M48, M54 and M68, plus the back-focus spacers that make the numbers work. Goods ship factory-sealed. Tell us your camera, flattener and filter setup and we'll work out the spacing with you before you order.

266 products

Showing 169 - 192 of 266 products

Showing 169 - 192 of 266 products
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T Adapter for Nexstar 4SET Adapter for Nexstar 4SE
Celestron T Adapter for Nexstar 4SE
$47.99 CAD
1.75" Twist Lock Extension Tube for 2"
Antares 1.75" Twist Lock Extension Tube for 2"
$47.52 CAD
2.25" Twist Lock Extension Tube for 2"
Antares 2.25" Twist Lock Extension Tube for 2"
$47.52 CAD
Baader UFC S70 Extension 5mm
Baader Planetarium Baader UFC S70 Extension 5mm
$47.24 CAD
QHY Combo Kit B3 For Nikon LensQHY Combo Kit B3 For Nikon Lens
QHYCCD QHY Combo Kit B3 For Nikon Lens
$46.00 CAD
QHY Combo Kit B2QHY Combo Kit B2
QHYCCD QHY Combo Kit B2
$46.00 CAD
QHY Combo Kit A3 for Nikon LensQHY Combo Kit A3 for Nikon Lens
QHYCCD QHY Combo Kit A3 for Nikon Lens
$46.00 CAD
Takahashi M55.9 Extension Tube L30 visual accessory spacer for M55.9 refractor trains
Takahashi Takahashi M55.9 Extension Tube L30
$46.00 CAD
Kowa TSN-AS 1.25-inch Astronomical AdapterKowa TSN-AS 1.25-inch Astronomical Adapter
Kowa Kowa TSN-AS 1.25-inch Astronomical Adapter
$45.00 CAD
M42 Variable adapter
Antares M42 Variable adapter
$45.00 CAD
Nikon Z mount M42 adapterNikon Z mount M42 adapter
Ontario Telescope and Accessories Nikon Z mount M42 adapter
$45.00 CAD
Antares M48 Small Variable Camera Adapter (19-23)Antares M48 Small Variable Camera Adapter (19-23)
Antares Antares M48 Small Variable Camera Adapter (19-23)
$44.99 CAD
T Mount Lens to Sony E-Mount Camera Adapter
Ontario Telescope and Accessories T Mount Lens to Sony E-Mount Camera Adapter
$44.99 CAD
Baader UFC S70 M68x1 (m) Adapter, telescope-sided (optical height: 1 mm)
Baader Planetarium Baader UFC S70 M68x1 (m) Adapter, telescope-sided (optical height: 1 mm)
$44.99 CAD
T2 Variable Locking Extension Ring
Ontario Telescope and Accessories T2 Variable Locking Extension Ring
$44.99 CAD
Side view of the short black anodised Explore Scientific focuser extension tube, a squat cylindrical spacer with a knurled outer band.Top view looking down into the open bore of the Explore Scientific focuser extension tube, showing the internal opening and mounting face.
Explore Scientific Explore Scientific Half-Inch Extension Tube for 2-inch Rack and Pinion Focusers
$41.95 CAD
Explore Scientific T2 reduction adapter, a thin matte black anodised aluminium ring stepping an M48 x 0.75 thread down to M42 x 0.75
Explore Scientific Explore Scientific T2 Reduction Adapter M48 x 0.75 to M42 x 0.75 Thread
$41.95 CAD
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Takahashi Takahashi M52 to M54 Adapter Ring
$41.00 CAD
CAA M42 AdapterCAA M42 Adapter
ZWO CAA M42 Adapter
$41.00 CAD
ZWO M54 Adapter for Replacing EFW SpacingZWO M54 Adapter for Replacing EFW Spacing
ZWO ZWO M54 Adapter for Replacing EFW Spacing
$41.00 CAD
UNIVERSAL 1.25" T-ADAPTERUNIVERSAL 1.25" T-ADAPTER
Celestron UNIVERSAL 1.25" T-ADAPTER
$40.99 CAD
Player One M48F-M54M 17.5mm aluminium adapter stepping M48 to M54 for imaging trainsPlayer One M48F-M54M 17.5mm adapter, alternate view
Player One Astronomy Player One M48F-M54M 17.5mm Adapter
$40.60 CAD
Takahashi M52 to M48 adapter ring for converting thread standards in a Takahashi imaging train
Takahashi Takahashi M52 to M48 Adapter Ring
$40.60 CAD
Sky-Watcher M48 camera adapter ring for Nikon DSLR bodies, connecting to 0.85x focal reducer/correctors for deep-sky astrophotography
Sky-Watcher Sky-Watcher M48 Camera Adapter for Nikon DSLR
$40.00 CAD