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Enjoy Free Shipping on Orders Over $500 + Same-Day Dispatch (Before 3 PM*) *Some exclusions apply

Spacer Rings, Extenders, and Telescope Adapters

Spacer rings, extension tubes, and adapters for telescopes are essential imaging accessories for achieving precise back focus and a perfect fit between your optical instruments. These devices compensate for variations in distance between the telescope and cameras or accessories, ensuring optimal focus for astrophotography and visual observation.

Available in a wide range of formats and sizes, these rings and adapters are compatible with most telescopes and DSLR, mirrorless, or CCD cameras. Extenders and spacer rings also allow you to adjust the sensor position to achieve the best focal plane, a critical factor for capturing sharp, detailed images of celestial objects. To complete your setup, explore our full range of adapters, extension tubes, and spacers, including T-rings, T-mounts, T-adapters, and much more.

At Astronomy Plus, we offer a carefully curated selection of reliable and easy-to-install extension tubes, spacers, and adapters for telescopes. Choosing the right accessory ensures a precise fit for your equipment, preserves the integrity of your instruments, and optimizes your astrophotography sessions, whether you’re a beginner or an experienced observer, allowing you to fully harness your telescope’s potential.

Original price $31.00 - Original price $31.00
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Current price $31.00

PrimaLuceLab M48 Male to T2 Female Adapter (PL3304248)

PrimaluceLab

PrimaLuceLab M48 Male to T2 Female Adapter The M48 male to T2 female adapter allows you to connect accessories with M48 thread (48x0.75 female) to ...

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Original price $31.00 - Original price $31.00
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Current price $31.00
Original price $21.00 - Original price $23.00
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$21.00 - $23.00
Current price $21.00

Svbony Adapter for Sony NEX Alpha Body Camera

Svbony

Svbony SV196 Adapter for Sony NEX Alpha Body Camera This adapter allows telescopes, lenses, and accessories used on your Sony NEX Alpha E-mount ca...

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Original price $21.00 - Original price $23.00
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$21.00 - $23.00
Current price $21.00
Original price $37.00 - Original price $37.00
Original price
$37.00
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Current price $37.00

Baader Conversion Ring M48a/M48a (M48-INV)

Baader Planetarium

Baader Conversion Ring M48a/M48a Converts an M48 (Zeiss) female thread in an M48 male thread Made of hardened, stainless steel This adapter i...

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Original price $37.00 - Original price $37.00
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$37.00
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Current price $37.00
Original price $71.00 - Original price $71.00
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$71.00
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Current price $71.00

Takahashi Camera adapter Sky90 (TKA35201)

Takahashi

Takahashi Camera adapter Sky90  Takahashi Wide Mount (WM) adapter for connecting the a variety of Takahashi telescopes to DSLR cameras.  Please ref...

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Original price $71.00 - Original price $71.00
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$71.00
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Current price $71.00
Original price $90.00 - Original price $90.00
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$90.00
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Current price $90.00

Takahashi Camera adapter ring 150 (TKA32202)

Takahashi

Takahashi Camera adapter ring 150  This CA-ring is used in combination with the TOA-35 reducer and the TOA-150B, TSA-120N/S and TSA-120.  In t...

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Original price $90.00 - Original price $90.00
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$90.00
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Current price $90.00
Original price $225.00 - Original price $225.00
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$225.00
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Current price $225.00

Takahashi CA35 Camera adapter 50.8mm (TKA31201)

Takahashi

Takahashi CA35 Camera adapter 50.8mm Takahashi CA35 2" Camera Adapter for the TOA series telescopes.  For use with 2" extenders and the small TOA f...

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Original price $225.00 - Original price $225.00
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$225.00
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Current price $225.00
Original price $168.00 - Original price $168.00
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$168.00
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Current price $168.00

Takahashi FS-60 Wide T-Ring DX-WR Premium

Takahashi

Takahashi FS-60 Wide T-Ring DX-WR Premium Stainless steel bayonet rings - extra stable, highest precision! Takahashi offers three different series...

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Original price $168.00 - Original price $168.00
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Original price $48.00 - Original price $48.00
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$48.00
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Current price $48.00

Takahashi Multi CA-100 Ring (TKA19203)

Takahashi

Takahashi Multi CA-100 Ring The CA ring 100 is designed to adapt the FC/FS Multi-Flattener for use with the FC-100D and FC-100 telescopes. Tak...

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Original price $48.00 - Original price $48.00
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$48.00
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Original price $230.00 - Original price $230.00
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$230.00
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Current price $230.00

Takahashi 98mm to Wide Mount T-Ring Adapter (TKP86003)

Takahashi

Takahashi 98mm to Wide Mount T-Ring Adapter  The Takahashi TKP86003 Adapter fits between the AUX Ring (81S on the System Chart) and a Wide Mount...

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Original price $230.00 - Original price $230.00
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$230.00
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Current price $230.00
Original price $60.00 - Original price $60.00
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$60.00
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Current price $60.00

Takahashi Extension tube (TKP00105)

Takahashi

Takahashi Extension tube no.11 Takahashi extension tube for use with FC-60/76 telescopes. Technical Specifications Metal back length = 26 mmMale M4...

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Original price $60.00 - Original price $60.00
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$60.00
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Current price $60.00
Original price $62.00 - Original price $62.00
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$62.00
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Current price $62.00

Takahashi Vari-Ring for TOA-130 Reducer (TKA31581)

Takahashi

Takahashi Vari-Ring for TOA-130 Reducer The Takahashi Vari-Ring for TOA-130 Reducer is used to vary the reduction provided by the reducer on the TO...

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Original price $62.00 - Original price $62.00
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$62.00
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Current price $62.00
Original price $88.00 - Original price $88.00
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$88.00
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Current price $88.00

Takahashi M72-M55.9 Coupling (TKA19205)

Takahashi

Takahashi M72-M55.9 Coupling This coupling is used with Takahashi telescopes to reduce the thread from M72 to M55.9.  The telescope side has m...

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Original price $88.00 - Original price $88.00
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$88.00
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Current price $88.00
Original price $75.00 - Original price $75.00
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$75.00
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Current price $75.00

Takahashi 50.8mm Sleeve for wide T Mount (TKA00207)

Takahashi

Takahashi 50.8mm Sleeve for wide T Mount  Conversion ring for mounting Takahashi wide T-rings on a 2.0" eyepiece holder This conversion ring allows...

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Original price $75.00 - Original price $75.00
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$75.00
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Current price $75.00
Original price $59.00 - Original price $59.00
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$59.00
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Current price $59.00

Pegasus Astro M74 Female to M54 Male (For SW Esprit 100) (ADAPT-M74F-M54M)

Pegasus

Pegasus Astro M74 Female to M54 Male (For SW Esprit 100) Takes up 8.5mm of backfocus Thread: Pitch M74/1.0mm, M54/0.75mm In the Box Pegasus M74 F...

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Original price $59.00 - Original price $59.00
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$59.00
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Current price $59.00
Original price $101.00 - Original price $101.00
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$101.00
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Current price $101.00

Pegasus Astro Prodigy Microfocuser Telescope M68 Female Adapter (PRDG-M68F)

Pegasus

Pegasus Astro Prodigy Microfocuser Telescope M68 Female Adapter Thread: M68 female In the Box Pegasus Astro Prodigy Microfocuser Telescope M68 Fema...

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Original price $101.00 - Original price $101.00
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$101.00
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Current price $101.00
Original price $153.00 - Original price $153.00
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$153.00
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Current price $153.00

Astroasis Oasis Focuser Adapter for Celestron C8/925/11/14

Astroasis

Astroasis Oasis Focuser Adapter for Celestron C8/925/11/14 If a normal electronic focuser without clutch function is installed on a Celestron SCT, ...

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Original price $153.00 - Original price $153.00
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$153.00
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Current price $153.00
Original price $133.00 - Original price $133.00
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$133.00
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Optec DSI 3.5x24tpi male thread adapter to M54 x 0.75mm camera thread

Optec

Optec DSI 3.5x24tpi male thread adapter to M54 x 0.75mm camera thread Outside Diameter:  3.82" (97.0mm) Overall Height: 0.62" (15.7mm) Clear Apert...

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Original price $133.00 - Original price $133.00
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Original price $98.00 - Original price $127.00
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Starizona Hyperstar Camera Adapter

Starizona

Starizona Hyperstar Camera Adapter Please Specify your camera model when you place your order Accurate backfocus distance necessitates an adapter t...

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Original price $98.00 - Original price $127.00
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Current price $98.00
Original price $62.00 - Original price $62.00
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$62.00
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Current price $62.00

Antares Twist-Lock Adapter 2" To 2.25" Extension (ET2TL)

Antares

Antares Twist-Lock Adapter 2" To 2.25" Extension ET2TL extends any 2" accessory by 2.25" with twist-lock retainer. Works with any type of barrel: s...

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Original price $62.00 - Original price $62.00
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Current price $62.00
Original price $62.00 - Original price $62.00
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Antares Twist-Lock Adapter 2" To 1.75" Extension (ET1.5TL)

Antares

Antares Twist-Lock Adapter 2" To 1.75" Extension ET1.5TL extends any 2" accessory by 1.75" with twist-lock retainer. Works with any barrel design: ...

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Original price $62.00 - Original price $62.00
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Original price $41.00 - Original price $41.00
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$41.00
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Current price $41.00

Antares Roof Prism Binocular Adapter For Tripod (BTARP)

Antares

Antares Roof Prism Binocular Adapter For Tripod BTARP is a really strong L-Bracket to hold your roof prism binoculars to a tripod or mounting. Made...

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Original price $41.00 - Original price $41.00
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Current price $41.00
Original price $17.00 - Original price $17.00
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$17.00
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Current price $17.00

ZWO T-Mount to C-Mount Adapter (T2-CS)

ZWO

ZWO T-Mount to C-Mount Adapter The ZWO M42 to CS Adapter has female C-mount threads on the inner diameter of the ring, and male T-threads on the ou...

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Original price $17.00 - Original price $17.00
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Original price $17.00 - Original price $17.00
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Antares M42 5mm Camera Extender Adapter (T2-EXT5)

Antares

Antares M42 5mm Camera Extender Adapter T2-EXT5 extends M42 T-thread by 5mm.   In the Box Antares M42 5mm Camera Extender Adapter Warranty & ...

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Original price $17.00 - Original price $17.00
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$17.00
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Current price $17.00
Original price $31.00 - Original price $31.00
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$31.00
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Current price $31.00

Antares 2" Adapter 1.25" Extension (ET1S)

Antares

Antares 2" Adapter 1.25" Extension ET1 extends any 1.25" accessory by 2". Accepts 1.25" Filters; Side screw retainer.   1.25″x2″ extension tube wi...

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Original price $31.00 - Original price $31.00
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$31.00
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Current price $31.00
Original price $218.00 - Original price $218.00
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$218.00
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Current price $218.00

Tele Vue Set of 6 Accessory Tubes for 2.4" (TLS-2245)

Tele Vue

Tele Vue Set of 6 Accessory Tubes for 2.4" The Tele Vue Set of 6 Accessory Tubes for 2.4″ is a complete set of the tubes/spacers. This allows great...

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Original price $218.00 - Original price $218.00
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$218.00
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Current price $218.00
Original price $97.00 - Original price $97.00
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$97.00
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Current price $97.00

Tele Vue Imaging System Nosepiece for 2" Focuser (RAD-1074)

Tele Vue

Tele Vue Imaging System Nosepiece for 2" Focuser This is a key component to the imaging system's versatility on non-"is" scopes. By placing the Tel...

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Original price $97.00 - Original price $97.00
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$97.00
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Current price $97.00
Original price $139.00 - Original price $139.00
Original price
$139.00
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Current price $139.00

Tele Vue 1.25" Questar Adapter (AQE-0005)

Tele Vue

Tele Vue 1.25" Questar Adapter Unleash the potential of your Questar 3.5 with Tele Vue’s 1¼”. Just add the Tele Vue 1.25″ Questar Adapter to use an...

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Original price $139.00 - Original price $139.00
Original price
$139.00
$139.00 - $139.00
Current price $139.00
Original price $17.00 - Original price $17.00
Original price
$17.00
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Current price $17.00

PrimaluceLab T2 spacer 1mm (PL3304201)

PrimaluceLab

PrimaluceLab T2 spacer 1mm   T2 spacers are available with 0,5mm or 1mm thickness and are used together with T2 extensions in order to fine set ext...

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Original price $17.00 - Original price $17.00
Original price
$17.00
$17.00 - $17.00
Current price $17.00
Original price $17.00 - Original price $17.00
Original price
$17.00
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Current price $17.00

PrimaluceLab T2 spacer 0.5mm (PL3304200)

PrimaluceLab

PrimaluceLab T2 spacer 0.5mm T2 spacers are available with 0,5mm or 1mm thickness and are used together with T2 extensions in order to fine set ex...

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Original price $17.00 - Original price $17.00
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$17.00
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Current price $17.00
Original price $27.00 - Original price $27.00
Original price
$27.00
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Current price $27.00

PrimaluceLab 7mm T2 extension (PL3304207)

PrimaluceLab

PrimaluceLab 7mm T2 extension PrimaLuceLab T2 extensions are available in different lengths and they present on both sides of a T2 thread (one side...

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Original price $27.00 - Original price $27.00
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$27.00
$27.00 - $27.00
Current price $27.00
Original price $41.00 - Original price $41.00
Original price
$41.00
$41.00 - $41.00
Current price $41.00

PrimaluceLab 5mm M48 extension (PL3304805)

PrimaluceLab

PrimaluceLab  5mm M48 extension PrimaLuceLab M48 extensions are available in different lengths and they present on both sides of a M48 thread (one...

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Original price $41.00 - Original price $41.00
Original price
$41.00
$41.00 - $41.00
Current price $41.00
Original price $83.00 - Original price $83.00
Original price
$83.00
$83.00 - $83.00
Current price $83.00

Daystar Quark to T Adapter (SZ1T)

Daystar

Daystar Quark to T Adapter Daystar Quark to T Adapter Technical Specifications Connection Side A Daystar Quark Connection Side B M42x0.75 (T/T...

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Original price $83.00 - Original price $83.00
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$83.00
$83.00 - $83.00
Current price $83.00
Original price $97.00 - Original price $97.00
Original price
$97.00
$97.00 - $97.00
Current price $97.00

Daystar Quark to C Adapter (SZ1C)

Daystar

Daystar Quark to C Adapter Daystar Quark to C Adapter   Technical Specifications Connection Side A Daystar Quark Connection Side B C Thread- M...

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Original price $97.00 - Original price $97.00
Original price
$97.00
$97.00 - $97.00
Current price $97.00
Original price $41.00 - Original price $41.00
Original price
$41.00
$41.00 - $41.00
Current price $41.00

Wanderer Astro M54 male to male adapter for Takahashi e-130/160/180 (WA-M54-MM2)

Wanderer Astro

Wanderer Astro M54 male to male adapter for Takahashi e-130/160/180 The Wanderer Astro M54 Male-to-Male Adapter (WA-M54-MM2) is a precision ultra-t...

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Original price $41.00 - Original price $41.00
Original price
$41.00
$41.00 - $41.00
Current price $41.00
Original price $25.00 - Original price $25.00
Original price
$25.00
$25.00 - $25.00
Current price $25.00

Wanderer Astro M54 Male to Male Adapter (WA-M54-MM)

Wanderer Astro

Wanderer Astro M54 Male to Male Adapter The Wanderer Astro M54 Male-to-Male Adapter is a precision-machined, low-profile threading adapter designed...

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Original price $25.00 - Original price $25.00
Original price
$25.00
$25.00 - $25.00
Current price $25.00
Original price $39.00 - Original price $39.00
Original price
$39.00
$39.00 - $39.00
Current price $39.00

Wanderer Astro M68 Male to Male Adapter (WA-M68-MM)

Wanderer Astro

Wanderer Astro M68 Male to Male Adapter The Wanderer Astro M68 Male-to-Male Adapter is a precision-machined low-profile adapter designed to connect...

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Original price $39.00 - Original price $39.00
Original price
$39.00
$39.00 - $39.00
Current price $39.00
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