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.
- ADM (7)
- Antares (32)
- Antlia (1)
- APM (1)
- Artesky (14)
- Askar (3)
- Astro Hutech (2)
- Astroasis (3)
- Astronomy Plus (45)
- Baader Planetarium (139)
- Buckeye Stargazer (1)
- Celestron (2)
- Daystar (2)
- Explore Scientific (4)
- Geoptik (3)
- Hotech (1)
- Innovations Foresight (2)
- iOptron (7)
- Kowa (3)
- Lunt (3)
- Moravian Instruments (1)
- Move Shoot Move (1)
- Optec (3)
- Orion (1)
- Pegasus (26)
- Planewave (22)
- PrimaluceLab (59)
- QHYCCD (7)
- Rainbow (2)
- Rowan Astronomy (2)
- Shelyak (4)
- Sky-Watcher (1)
- Starizona (7)
- Svbony (27)
- Takahashi (102)
- TEC (1)
- Tele Vue (18)
- Unihedron (1)
- Wanderer Astro (5)
- William Optics (8)
- ZWO (26)
PrimaluceLab M60 Adapter for ESATTO 2” LP - USED (PL3600545-U)
PrimaluceLabPrimaluceLab M60 Adapter for ESATTO 2” LP - USED Adapter from M60 to M48, M54 or T2 with stop ring for ESATTO 2" LP allows you to connect any camer...
View full detailsPrimaluceLab Adapter ESATTO 2" LP for telescopes with SC thread - USED (PL3600542-U)
PrimaluceLabPrimaluceLab Adapter ESATTO 2" LP for telescopes with SC thread - USED By adding this adapter, you can connect the ESATTO 2" LP low profile robotic...
View full detailsMove Shoot Move 360° Panoramic Panning Base (Pan_base#wrench)
Move Shoot MoveMove Shoot Move 360° Panoramic Panning Base Diameter of the base: 60mm Height:19mm Weight: 13.5g Scale markings: Each major gap represents 15°...
View full detailsBaader 2"a / M41,5 Zero-length reducing piece (zero optical length) (2454832)
Baader PlanetariumBaader 2"a / M41,5 Zero-length reducing piece (zero optical length) Converts any 2" (SC) female thread into a M41.5 x 1 female thread- without ext...
View full detailsBaader Hyperion Mark IV Zoom to M54 Kowa TSN 770 / 880 Adapter (2454836)
Baader PlanetariumBaader Hyperion Mark IV Zoom to M54 Kowa TSN 770 / 880 Adapter Connection ring M54/M53 for Kowa TSN 770/880 Spotting Scopes and 1.6X Extender enab...
View full detailsBaader Harpia Bayonet 1.25" Ocular Adapter (2454511)
Baader PlanetariumBaader Harpia Bayonet 1.25" Ocular Adapter Designed for seamless integration with Zeiss Harpia spotting scopes Enables the use of 1.25" astronomic...
View full detailsBaader Eyepiece 1.25"/36.4mm (T-2 part #11) (2408195)
Baader PlanetariumBaader Eyepiece 1.25"/36.4mm (T-2 part #11) 1.25" "/ T-2 eyepiece with fine focus (5mm focus travel) With three eyepiece clamping screws for fine ...
View full detailsBaader Ultrashort 1.25" / T-2 Clamp (2458121)
Baader PlanetariumBaader Ultrashort 1.25" / T-2 Clamp Ultra short 1.25" eyepiece-clamp (w. brass locking ring) Optical length: 20mm Optimized for guiding camera, w....
View full detailsBaader 2" Deluxe Clicklock Extension
Baader PlanetariumBaader 2" Deluxe Clicklock Extension The wait is over. Baader Planetarium has developed the big brother to their acclaimed 1.25” Clicklock clamp. T...
View full detailsBaader Zeiss-Diascope/Mark IV Zoom Adapter (2454831)
Baader PlanetariumBaader Zeiss-Diascope/Mark IV Zoom Adapter M45 x 0.5 threaded adapter ring for shortest possible adaptation of Hyperion Universal Zoom Mark IV to ...
View full detailsBaader Diascope Okularbajonett 2" (2454502)
Baader PlanetariumBaader Diascope Okularbajonett 2" Technical Specifications MANUFACTURER Baader Planetarium SKU (#) 2454502 EAN CODE 4047825011534 WEIGHT (...
View full detailsBaader 2" Clicklock Clamp for Zeiss (external M68 thread) (2956268)
Baader PlanetariumBaader 2" Clicklock Clamp for Zeiss (external M68 thread) The wait is over. Baader Planetarium has developed the big brother to their acclaimed 1....
View full detailsBaader 2" ClickLock Clamp S57 / Newton Ring-Dovetail (Celestron / SkyWatcher) (2956257)
Baader PlanetariumBaader 2" ClickLock Clamp S57 / Newton Ring-Dovetail (Celestron / SkyWatcher) The wait is over. Baader Planetarium has developed the big brother to...
View full detailsBaader 2" Clicklock Clamp for Pentax (external M84 Thread) (2956284)
Baader PlanetariumThe wait is over. Baader Planetarium has developed the big brother to their acclaimed 1.25” Clicklock clamp. The new 2" Clicklock Eyepiece Clamp br...
View full detailsBaader 2" ClickLock M54e x 0.75 clamp (TS-Optics / SkyWatcher) (2956251)
Baader PlanetariumBaader 2" ClickLock M54e x 0.75 clamp (TS-Optics / SkyWatcher) Baader 2" ClickLock M54 x 0,75 external threaded clamp- for all focusers from TS-Op...
View full detailsBaader 2" Clicklock Clamp for all Feathertouch 2.5" Focusers (2956263)
Baader PlanetariumBaader 2" Clicklock Clamp for all Feathertouch 2.5" Focusers The wait is over. Baader Planetarium has developed the big brother to their acclaimed ...
View full detailsBaader 2" Clicklock Clamp for TEC/AP (external 2.7" Thread) (2956227)
Baader PlanetariumBaader 2" Clicklock Clamp for TEC/AP (external 2.7" Thread) The wait is over. Baader Planetarium has developed the big brother to their acclaimed 1...
View full detailsBaader ClickLock Expansion Adapter, 1¼"-> 2" (2956215)
Baader PlanetariumBaader ClickLock Expansion Adapter, 1¼"-> 2" The wait is over. Baader Planetarium has developed the big brother to their acclaimed 1.25” Clickl...
View full detailsiOptron iAFS3 3" Camera Adapter (FA30-CA)
iOptroniOptron iAFS3 3" Camera Adapter M68 Camera Adapter for iAFS 3" auto focuser system. Technical Specifications Specification Details Product ...
View full detailsiOptron iAFS2 Adapter for GSO 6" and 8" Newtonian (NEWTG)
iOptroniOptron iAFS2 Adapter for GSO 6" and 8" Newtonian iOptron iAFS 2" auto focuser system telescope adapter for iOptron/GSO 6" and 8" fast Newtonian i...
View full detailsiOptron iAFS2 Telescope Adapter for Celestron/C11 and other M83.5X1.5 (M0835)
iOptroniOptron iAFS2 Telescope Adapter for Celestron/C11 and other M83.5X1.5 iOptron iAFS 2" auto focuser system M83.5X1.5 (3.3"-16TPI) telescope adapter...
View full detailsiOptron iAFS2 Telescope Adapter for TeleVue 76/85 Series (M0762)
iOptroniOptron iAFS2 telescope adapter for TeleVue 76/85 Series iOptron iAFS 2" auto focuser system telescope adapter for TeleVue 76/85 series OTA. Threa...
View full detailsiOptron iAFS2 telescope adapter Askar/65PHQ and other M80X1 (M0800)
iOptroniOptron iAFS2 telescope adapter Askar/65PHQ and other M80X1 The iOptron iAFS2 Telescope Adapter (P-FA20-M0800) is designed to connect the iOptron i...
View full detailsBaader UFC Seal, 3D-printed (2459196)
Baader PlanetariumBaader UFC Seal, 3D-printed Suitable for all UFC systems Suitable for all UFC systems - closes the opening for the filter sliding of the UFC again...
View full detailsBaader UFC Dark Slider, 3D-printed (2459197)
Baader PlanetariumBaader UFC Dark Slider, 3D-printed Suitable for all UFC systems Closes the aperture of UFC and telescopes at the same time to create darks with CM...
View full detailsBaader Clicklock S58 clamp (Baader Diamond Steeltrack) (2956258)
Baader PlanetariumBaader Clicklock S58 clamp (Baader Diamond Steeltrack) The wait is over. Baader Planetarium has developed the big brother to their acclaimed 1.25” ...
View full detailsBaader Clicklock M48i x 0.75 clamp (2" filter/photo thread) (2956248)
Baader PlanetariumBaader Clicklock M48i x 0.75 clamp (2" filter/photo thread) The wait is over. Baader Planetarium has developed the big brother to their acclaimed 1...
View full detailsBaader TQC/TCR Heavy duty T-2 Quick Changing System (2456322)
Baader PlanetariumBaader TQC/TCR Heavy duty T-2 Quick Changing System Heavy duty TQC/TCR T-2 Quick Changer System, a combination of parts #6A and 7 TQC = T-2 Quick C...
View full detailsBaader Adapter M48 internal to T-2 external (2958556)
Baader PlanetariumBaader Adapter M48 internal to T-2 external Reducing Ring M48 to T-2 with M48 female thread Changes the M48 male thread of a telescope into a T-2 ...
View full detailsBaader Adapter M54 internal to T- external (2958753)
Baader PlanetariumBaader Adapter M54 internal to T- external Reducing Adapter M54i to T-2a (M42 x 0.75) with M54 female thread Changes the M54 male thread of telesc...
View full detailsStarizona Sky-Watcher Power Adapter - DC 12v (SWPA)
StarizonaStarizona Sky-Watcher Power Adapter - DC 12v This power adapter converts the standard Sky-Watcher aviation power adapter port into the more com...
View full detailsPrimaluceLab 3" nosepiece for ARCO 3" (PL3600466)
PrimaluceLabPrimaluceLab 3" nosepiece for ARCO 3" 3" nosepiece for ARCO 3" allows you to connect rotator to focusers that come with 3" visual back and to contr...
View full detailsPrimaluceLab M56x1 Male Adapter for ARCO 2" (PL3600427)
PrimaluceLabM56x1 male adapter for ARCO 2" M56x1 male adapter for ARCO 2" allows you to connect rotator to focusers that come with M56x1 female thread and to c...
View full detailsPrimaluceLab ALTO-3L adapter for OS RiDK 400 (PL3700141)
PrimaluceLabPrimaluceLab ALTO-3L adapter for OS RiDK 400 This adapter allows you to connect ALTO-3L telescope cover motor to the front part of the OS RiDK 400 ...
View full detailsPrimaluceLab Cable Locking Clip (CLC) for ALTO (PLLALTOLOCK)
PrimaluceLabCable Locking Clip (CLC) for ALTO This Cable Locking Clip (CLC) for ALTO allows you to lock to ALTO body the USB and power cables that connects GIO...
View full detailsPrimaluceLab Cable Locking Clip (CLC) for GIOTTO (PLLGIOTTOLOCK)
PrimaluceLabPrimaluceLab Cable Locking Clip (CLC) for GIOTTO This Cable Locking Clip (CLC) for GIOTTO allows you to lock to GIOTTO body the USB and power cable...
View full detailsSubscribe to our Newsletter to be the first to be inform about Promotions, New Products and More!
in Canada over 500$+* bf txs
Paybright and Sezzle at Check Out
Contact us!
Find a Better Price? We Will Match it!