Skip to content
Enjoy Free Shipping on Orders Over $500 + Same-Day Dispatch (Before 3 PM*) *Some exclusions apply
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 $17.00 - Original price $17.00
Original price
$17.00
$17.00 - $17.00
Current price $17.00

PrimaluceLab Set 3 locking screws for GIOTTO (PLLGIOTTOSCR)

PrimaluceLab

PrimaluceLab Set 3 locking screws for GIOTTO Set 3 locking screws for GIOTTO are already included in every GIOTTO box but you can also order them a...

View full details
Original price $17.00 - Original price $17.00
Original price
$17.00
$17.00 - $17.00
Current price $17.00
Sold out
Original price $23.00 - Original price $23.00
Original price
$23.00
$23.00 - $23.00
Current price $23.00

PrimaluceLab Black Color Bushing Long for SESTO SENSO 2 Adapters (PL3600117)

PrimaluceLab

PrimaluceLab Black Color Bushing Long for SESTO SENSO 2 Adapters Black color bushing long is usually included in 33 or 37mm adapters that allow to ...

View full details
Original price $23.00 - Original price $23.00
Original price
$23.00
$23.00 - $23.00
Current price $23.00
Original price $27.00 - Original price $27.00
Original price
$27.00
$27.00 - $27.00
Current price $27.00

PrimaluceLab Flexible bushing for SESTO SENSO 2 (PL3600119)

PrimaluceLab

PrimaluceLab Flexible bushing for SESTO SENSO 2 This flexible bushing connects the SESTO SENSO 2 motor to one of the red, black, blue, green, grey ...

View full details
Original price $27.00 - Original price $27.00
Original price
$27.00
$27.00 - $27.00
Current price $27.00
Original price $13.00 - Original price $13.00
Original price
$13.00
$13.00 - $13.00
Current price $13.00

PrimaluceLab Yellow Color Bushing for SESTO SENSO 2 (PL3600116F)

PrimaluceLab

PrimaluceLab Yellow Color Bushing for SESTO SENSO 2 This yellow color bushing allows you to connect SESTO SENSO 2 motor shaft to focusers with 4.0m...

View full details
Original price $13.00 - Original price $13.00
Original price
$13.00
$13.00 - $13.00
Current price $13.00
Original price $13.00 - Original price $13.00
Original price
$13.00
$13.00 - $13.00
Current price $13.00

PrimaluceLab Grey Color Bushing for SESTO SENSO 2 (PL3600116E)

PrimaluceLab

PrimaluceLab Grey Color Bushing for SESTO SENSO 2 This grey color bushing allows you to connect SESTO SENSO 2 motor shaft to focusers with 3.1mm di...

View full details
Original price $13.00 - Original price $13.00
Original price
$13.00
$13.00 - $13.00
Current price $13.00
Original price $13.00 - Original price $13.00
Original price
$13.00
$13.00 - $13.00
Current price $13.00

PrimaluceLab Green Color Bushing for SESTO SENSO 2 (PL3600116D)

PrimaluceLab

PrimaluceLab Green Color Bushing for SESTO SENSO 2 This green color bushing allows you to connect SESTO SENSO 2 motor shaft to focusers with 3.5m...

View full details
Original price $13.00 - Original price $13.00
Original price
$13.00
$13.00 - $13.00
Current price $13.00
Original price $13.00 - Original price $13.00
Original price
$13.00
$13.00 - $13.00
Current price $13.00

PrimaluceLab Blue Color Bushing for SESTO SENSO 2 (PL3600116C)

PrimaluceLab

PrimaluceLab Blue Color Bushing for SESTO SENSO 2  This blue color bushing allows you to connect SESTO SENSO 2 motor shaft to focusers with 2.4mm...

View full details
Original price $13.00 - Original price $13.00
Original price
$13.00
$13.00 - $13.00
Current price $13.00
Original price $13.00 - Original price $13.00
Original price
$13.00
$13.00 - $13.00
Current price $13.00

PrimaluceLab Black Color Bushing for SESTO SENSO 2 (PL3600116B)

PrimaluceLab

PrimaluceLab Black Color Bushing for SESTO SENSO 2 This black color bushing allows you to connect SESTO SENSO 2 motor shaft to focusers with 2.8mm ...

View full details
Original price $13.00 - Original price $13.00
Original price
$13.00
$13.00 - $13.00
Current price $13.00
Original price $13.00 - Original price $13.00
Original price
$13.00
$13.00 - $13.00
Current price $13.00

PrimaluceLab Red Color Bushing for SESTO SENSO 2 (PL3600116A)

PrimaluceLab

PrimaluceLab Red Color Bushing for SESTO SENSO 2  This red color bushing allows you to connect SESTO SENSO 2 motor shaft to focusers with 2.5mm dia...

View full details
Original price $13.00 - Original price $13.00
Original price
$13.00
$13.00 - $13.00
Current price $13.00
Original price $12.00 - Original price $12.00
Original price
$12.00
$12.00 - $12.00
Current price $12.00

Astronomy Plus SCT Male to Maksutov Female Adapter (TA149)

Astronomy Plus

Astronomy Plus SCT Male to Maksutov Female Adapter SCT male - Maksutov female adapter Technical Specifications Connection Side A SCT Male Conn...

View full details
Original price $12.00 - Original price $12.00
Original price
$12.00
$12.00 - $12.00
Current price $12.00
Original price $148.00 - Original price $148.00
Original price
$148.00
$148.00 - $148.00
Current price $148.00

Baader Adapter Four-in-One M68i/T-2a to M60a / M68a / AP 2.7"a (2458225)

Baader Planetarium

Baader Adapter Four-in-One M68i/T-2a to M60a / M68a / AP 2.7"a   Telescopes which are used for photography on a professional level need to avoid a...

View full details
Original price $148.00 - Original price $148.00
Original price
$148.00
$148.00 - $148.00
Current price $148.00
Original price $50.00 - Original price $50.00
Original price
$50.00
$50.00 - $50.00
Current price $50.00

Shelyak Spacer for Star Analyser (BA0014)

Shelyak

Shelyak Spacer for Star Analyser The Star Analyser 100 has been designed to work with the smallest commonly used sensor chips and the range of came...

View full details
Original price $50.00 - Original price $50.00
Original price
$50.00
$50.00 - $50.00
Current price $50.00
Original price $35.00 - Original price $35.00
Original price
$35.00
$35.00 - $35.00
Current price $35.00

Pegasus Astro M42 Male to 1.25'' Nosepiece (ADAPT-M42M-125NP)

Pegasus

Pegasus Astro M42 Male to 1.25'' Nosepiece Black anodized aluminum M42 Male to 1.25" Nosepiece Adapter from Pegasus Astro. Technical Specifications...

View full details
Original price $35.00 - Original price $35.00
Original price
$35.00
$35.00 - $35.00
Current price $35.00
Original price $140.00 - Original price $140.00
Original price
$140.00
$140.00 - $140.00
Current price $140.00

Rainbow Astro 2inch adapter for 8RC (ACCRF08A0)

Rainbow

Rainbow Astro 2inch adapter for 8RC Fixed focus adapter for 8-inch RC OTAs.The original focuser can be removed and replaced with this adapter.   Te...

View full details
Original price $140.00 - Original price $140.00
Original price
$140.00
$140.00 - $140.00
Current price $140.00
Original price $392.00 - Original price $392.00
Original price
$392.00
$392.00 - $392.00
Current price $392.00

Rainbow Astro 3.5inch adapter for 10~20inch RC (ACCRF10A1)

Rainbow

Rainbow Astro 3.5inch adapter for 10~20inch RC Fixed focus adapter for 10-20 inch RC OTA.The original focuser can be removed and replaced with this...

View full details
Original price $392.00 - Original price $392.00
Original price
$392.00
$392.00 - $392.00
Current price $392.00
Original price $102.00 - Original price $102.00
Original price
$102.00
$102.00 - $102.00
Current price $102.00

Wanderer Astro MoonLite CRL 2.5" Focuser Extension Kit (WA-MLCRL-ETA)

Wanderer Astro

Wanderer Astro MoonLite CRL 2.5" Focuser Extension Kit Avoid focuser conflicts with your devices (e.g. Wanderer ETA) The original bracket connectin...

View full details
Original price $102.00 - Original price $102.00
Original price
$102.00
$102.00 - $102.00
Current price $102.00
Original price $27.00 - Original price $27.00
Original price
$27.00
$27.00 - $27.00
Current price $27.00

Wanderer Astro M42 female to M54 male adapter (WA-M42F-M54M)

Wanderer Astro

Wanderer Astro M42 female to M54 male adapter  Connect your 12.5mm back focus ToupTek ATR2600M camera to AFW Technical Specifications 4mm Thread, 0...

View full details
Original price $27.00 - Original price $27.00
Original price
$27.00
$27.00 - $27.00
Current price $27.00
Original price $73.00 - Original price $73.00
Original price
$73.00
$73.00 - $73.00
Current price $73.00

Astronomy Plus M42 T Adapter for LARGE SCT EDGE HD (9.25/11/14)(TA662)

Astronomy Plus

Astronomy Plus M42 T Adapter for LARGE SCT EDGE HD (9.25/11/14)   This T-Adapter is designed to connect your Celestron C925HD, C11HD, or C14HD tele...

View full details
Original price $73.00 - Original price $73.00
Original price
$73.00
$73.00 - $73.00
Current price $73.00
Original price $42.00 - Original price $42.00
Original price
$42.00
$42.00 - $42.00
Current price $42.00

Astronomy Plus T Adapter for C8HD (TA661)

Astronomy Plus

Astronomy Plus T Adapter for C8HD   This T-Adapter is specifically designed for the Celestron C8HD Schmidt-Cassegrain telescope, providing a secure...

View full details
Original price $42.00 - Original price $42.00
Original price
$42.00
$42.00 - $42.00
Current price $42.00
Original price $130.00 - Original price $130.00
Original price
$130.00
$130.00 - $130.00
Current price $130.00

Artesky EQ6 to 3/8" Tripod Adapter (ART8111)

Artesky

Artesky EQ6 to 3/8" Tripod Adapter Allows you to mount accessories with a 3/8" attachment to a Skywatcher EQ6 tripod or similar Technical Specifica...

View full details
Original price $130.00 - Original price $130.00
Original price
$130.00
$130.00 - $130.00
Current price $130.00
Original price $47.00 - Original price $47.00
Original price
$47.00
$47.00 - $47.00
Current price $47.00

Artesky Smartphone Holder with Synta Dovetail (ART8145)

Artesky

Artesky Smartphone Holder with Synta Dovetail This universal support is very useful for attaching a smartphone to orient yourself in the night sky,...

View full details
Original price $47.00 - Original price $47.00
Original price
$47.00
$47.00 - $47.00
Current price $47.00
Original price $25.00 - Original price $25.00
Original price
$25.00
$25.00 - $25.00
Current price $25.00

ZWO M54M - M54F 10mm Adapter (M54-M54-10)

ZWO

ZWO M54M - M54F 10mm Adapter This adapter allows conversion from male M54 to female M54 with 10mm spacing. Technical Specifications M54 Male Threa...

View full details
Original price $25.00 - Original price $25.00
Original price
$25.00
$25.00 - $25.00
Current price $25.00
Original price $24.00 - Original price $24.00
Original price
$24.00
$24.00 - $24.00
Current price $24.00

Baader Foldable Morpheus® Eyecup (M43-threaded) (MORPH-EYCP)

Baader Planetarium

Baader Foldable Morpheus® Eyecup (M43-threaded) Rubber eyecup with M43 metal thread Holds absolutely tight on our Morpheus eyepieces due to the sc...

View full details
Original price $24.00 - Original price $24.00
Original price
$24.00
$24.00 - $24.00
Current price $24.00
Original price $35.00 - Original price $35.00
Original price
$35.00
$35.00 - $35.00
Current price $35.00

Baader Hyperion 2" Finetuning Stopring (HYP-STOP)

Baader Planetarium

Baader Hyperion 2" Finetuning Stopring With the stop collar bottoming of 1¼ "barrel with applications of fine tuning rings on the diagonal, or a p...

View full details
Original price $35.00 - Original price $35.00
Original price
$35.00
$35.00 - $35.00
Current price $35.00
Original price $57.00 - Original price $57.00
Original price
$57.00
$57.00 - $57.00
Current price $57.00

Baader UFC S70/40 Extension 40mm (UFC-XT40)

Baader Planetarium

Baader UFC S70/40 Extension 40mm Baader UFC S70/40 Extension 40mm Telescope-side: with S70 dovetail clamp (screws included) Camera-side: with S70 ...

View full details
Original price $57.00 - Original price $57.00
Original price
$57.00
$57.00 - $57.00
Current price $57.00
Original price $57.00 - Original price $57.00
Original price
$57.00
$57.00 - $57.00
Current price $57.00

Baader UFC T-2 (w) Camera-Adapter for ASI Cameras with T-2 (m) Thread (UFC-T2ASI)

Baader Planetarium

Baader UFC T-2 (w) Camera-Adapter for ASI Cameras with T-2 (m) Thread Baader UFC Fitting / T-2 (f) Thread Adapter telescope-side: mounting plate f...

View full details
Original price $57.00 - Original price $57.00
Original price
$57.00
$57.00 - $57.00
Current price $57.00
Original price $44.00 - Original price $44.00
Original price
$44.00
$44.00 - $44.00
Current price $44.00

Baader UFC S70 / SP54 (ext) Telescope-Adapter (UFC-SP54)

Baader Planetarium

Baader UFC S70 / SP54 (ext) Telescope-Adapter Baader UFC S70 / SP54 (ext) Adapter Camera Lens side: SP54 external thread Sky-side: with S70 doveta...

View full details
Original price $44.00 - Original price $44.00
Original price
$44.00
$44.00 - $44.00
Current price $44.00
Original price $53.00 - Original price $53.00
Original price
$53.00
$53.00 - $53.00
Current price $53.00

Baader UFC S70 Base Connector (UFC-S70)

Baader Planetarium

Baader UFC S70 Base Connector Baader UFC S70 Dovetail-Adapter Telescope-sided with mounting plate for UFC-Base (screws included) Camera-sided with...

View full details
Original price $53.00 - Original price $53.00
Original price
$53.00
$53.00 - $53.00
Current price $53.00
Original price $46.00 - Original price $46.00
Original price
$46.00
$46.00 - $46.00
Current price $46.00

Baader UFC S58 dovetail Camera-Adapter (UFC-S58)

Baader Planetarium

Baader UFC S58 dovetail Camera-Adapter Baader UFC D58 Dovetail-Receptor Adapter Telescope-sided with mounting plate for UFC-Base (screws included)...

View full details
Original price $46.00 - Original price $46.00
Original price
$46.00
$46.00 - $46.00
Current price $46.00
Original price $44.00 - Original price $44.00
Original price
$44.00
$44.00 - $44.00
Current price $44.00

Baader S52 dovetail Camera-Adapter for Wide-T-rings (UFC-S52)

Baader Planetarium

Baader S52 dovetail Camera-Adapter for Wide-T-rings Baader UFC S52 (m) Adapter telescope-side: with mounting plate for UFC-Base (screws included) ...

View full details
Original price $44.00 - Original price $44.00
Original price
$44.00
$44.00 - $44.00
Current price $44.00
Original price $49.00 - Original price $49.00
Original price
$49.00
$49.00 - $49.00
Current price $49.00

Baader UFC Straylight-Flange (UFC-SHLD)

Baader Planetarium

Baader UFC Straylight-Flange Baader UFC Straylight-Flange telescope-sided with mounting plate for UFC-Base (screws included) camera-sided with str...

View full details
Original price $49.00 - Original price $49.00
Original price
$49.00
$49.00 - $49.00
Current price $49.00
Original price $369.00 - Original price $369.00
Original price
$369.00
$369.00 - $369.00
Current price $369.00

Baader UFC S70 RASA 36cm Telescope-Adapter (UFC-RASA36)

Baader Planetarium

Baader UFC S70 RASA 36cm Telescope-Adapter Baader UFC S70 / RASA 36cm (14") Adapter telescope-side: RASA 36cm-plate camera-side: S70 dovetail can ...

View full details
Original price $369.00 - Original price $369.00
Original price
$369.00
$369.00 - $369.00
Current price $369.00
Original price $5.50 - Original price $38.00
Original price
$5.50 - $38.00
$5.50 - $38.00
Current price $5.50

Astronomy Plus Fine M68 Adjustment Spacer Rings (0.1 to 1mm)

Astronomy Plus

Astronomy Plus Fine M68 Adjustment Spacer Rings (0.1 to 1mm) Spacers in astrophotography are used to achieve precise backfocus, ensuring the optima...

View full details
Original price $5.50 - Original price $38.00
Original price
$5.50 - $38.00
$5.50 - $38.00
Current price $5.50
Original price $209.00 - Original price $209.00
Original price
$209.00
$209.00 - $209.00
Current price $209.00

ADM Converts to D Series to V Series for VersaPlate (D2V-VP)

ADM

ADM Converts to D Series to V Series for VersaPlate Converts V Series mounts to a D Series saddle. Specifically designed for the Software Bisque V...

View full details
Original price $209.00 - Original price $209.00
Original price
$209.00
$209.00 - $209.00
Current price $209.00
Original price $111.00 - Original price $111.00
Original price
$111.00
$111.00 - $111.00
Current price $111.00

ADM D Series Dovetail Adapter for PoleMaster Mounting (DPA-POLE)

ADM

ADM D Series Dovetail Adapter for PoleMaster Mounting Fits D Series dovetail bars. D Series dovetail clamp allows you to attach the QHY PoleMaster ...

View full details
Original price $111.00 - Original price $111.00
Original price
$111.00
$111.00 - $111.00
Current price $111.00
Original price $69.00 - Original price $69.00
Original price
$69.00
$69.00 - $69.00
Current price $69.00

ADM D Series Dovetail Adapter for Takahashi Mounts (DPA-TAK)

ADM

ADM D Series Dovetail Adapter for Takahashi Mounts Fits D Series dovetail bars. Attaches directly to Takahashi or other mounts that have two 8mm ta...

View full details
Original price $69.00 - Original price $69.00
Original price
$69.00
$69.00 - $69.00
Current price $69.00
Sign Up to Astronomy Plus Newsletters

Subscribe to our Newsletter to be the first to be inform about Promotions, New Products and More!

Free Shipping

in Canada over 500$+* bf txs

Buy Now, Pay Later

Paybright and Sezzle at Check Out

Target the Right Equipment

Contact us!

Price Match

Find a Better Price? We Will Match it!

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare