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.
Baader M54 Extension Tubes (5 / 7.5 / 10 / 15 / 30 / 40 mm)
Baader PlanetariumBaader M54 Extension Tubes (5 / 7.5 / 10 / 15 / 30 / 40 mm) Used to adjust the working distance of larger cameras and similar accessories with M54...
View full detailsPegasus Adapter M54 Male to M48 Female (ADAPT-M54M-M48F)
PegasusPegasus Adapter M54 Male to M48 Female Adapter Thickness: 2.0mm Thread: Pitch 0.75mm / 4 mm length In the Box Peagsus Adapter M54 Male to M48 Fe...
View full detailsAntares SCT Camera Adapter M42 30mm (TAS)
AntaresAntares SCT Camera Adapter M42 30mm TAS threads directly onto the back of your Schmidt-Cassegrain and outputs M42 T-thread with a 30mm extension. ...
View full detailsAntares SCT Adapter 2" (T2)
AntaresAntares SCT Adapter 2" Tired of threading your Schmidt-Cassegrain accessories on and off? Switch to a smooth 2" barrel with a T2; it's quicker and ...
View full detailsAntares M42 Camera Adapter 1.25" (DP1)
AntaresAntares M42 Camera Adapter 1.25" DP1 adapts your 1.25" focuser or diagonal directly to M42 T-Thread. Threaded for filters. In the Box Antares M42...
View full detailsZWO M54M-M48F-2mm adapter (M54M-M48F-2)
ZWO5.0 / 5.0
1 Review
ZWO M54M-M48F-2mm adapter M54-M48-2 adapter is independently developed by ZWO and mainly used for connecting to 2” EFW and M54 filter drawer. The t...
View full detailsAstronomy Plus 3/8-16 M to 1/4-20 F Adapter (3814)
Astronomy Plus5.0 / 5.0
1 Review
Astronomy Plus 3/8-16 M to 1/4-20 F Adapter 1/4" to 3/8" reducer bushing screw High quality stainless steel 7mm height Used for Monopod, Tri...
View full detailsAstronomy Plus Fine M68 Adjustment Spacer Rings (0.1 to 1mm)
Astronomy PlusAstronomy Plus Fine M68 Adjustment Spacer Rings (0.1 to 1mm) Spacers in astrophotography are used to achieve precise backfocus, ensuring the optima...
View full detailsAstronomy Plus M42M to M48M Adapter (TA461)
Astronomy PlusAstronomy Plus M42M to M48M Adapter M42M to M48M Metallic adapter. Adds 0 mm of back Focus Technical Specifications Side A : M42 x 0.75 Male Side...
View full detailsAntares SCT 1.25" Twist Lock Adapter (SCTTL)
Antares5.0 / 5.0
1 Review
Antares SCT 1.25" Twist Lock Adapter New from Antares - Female SCT thread (visual back) with 1.25" twist lock eyepiece holder # SCT-TL Features st...
View full detailsZWO Sony NEX Lens to ASI Small-Sensor Camera Adapter (SONY-NEX)
ZWOZWO Sony NEX Lens to ASI Small-Sensor Camera Adapter If you are looking to connect a Sony NEX lens to an ASI small-sensor camera, this is the ad...
View full detailsWilliam Optics 2" to 1.25" RotoLock Eyepiece Adapter
William OpticsWilliam Optics 2" to 1.25" RotoLock Eyepiece Adapter The new RotoLock series of adapters from William Optics may well set the "gold' standard for ...
View full detailsAntares M48-M42 Camera Adapter (M48-M42)
AntaresAntares M48-M42 Camera Adapter M48-M42 reduces female M48 to female M42 In the Box Antares M48-M42 Camera Adapter Warranty & Manuals Antares ...
View full detailsAntares SCT Adapter Twist-Lock 2" (T2TL)
AntaresAntares SCT Adapter Twist-Lock 2" Tired of threading your Schmidt-Cassegrain accessories on and off? Switch to a smooth 2" barrel with a T2TL Twist...
View full detailsAstronomy Plus M68x1 Metal Extension Tube (TA457)
Astronomy PlusAstronomy Plus M68*1 Metal Focal Length Extension Tube Elevate your astronomy game with our Astronomy Plus M68x1 Metal Focal Length Extension Tube ...
View full detailsAskar Heightening Modules for SQA OTA's (HEIM)
AskarAskar Heightening Modules for SQA OTA's Optional SQA series heightening section, can be used with most SQA series OTAs. The all-metallic heighteni...
View full detailsPegasus Astro M68 Male to M48 Male (M42 inner hole)
PegasusPegasus Astro M68 Male to M48 Male (M42 inner hole) Adapter (Backfocus) Thickness: 1.4 mm M68 Thread: Pitch 1.0mm / 4mm length M48 Thread Pitch 0....
View full detailsAntares 1.25"x1.75" Barrel Extension (ET1-S)
Antares2.0 / 5.0
1 Review
Antares 1.25"x1.75" Barrel Extension ET1-S is a slightly shorter tube of the ET1 1.25"x1.75" extension tube with screw retainer. Threaded for 1.25"...
View full detailsPrimaluceLab 2" Adapter ESATTO 2" LP for ARCO 2" (PL3600538)
PrimaluceLabPrimaluceLab 2" Adapter ESATTO 2" LP for ARCO 2" Adapter ESATTO 2" LP for ARCO 2" allows you to connect the rotator to ESATTO 2" LP robotic focuser...
View full detailsSVBONY M48 to M42 Knurling Design Adapter (W9100A)
SvbonySVBONY SV130 M48 to M42 Knurling Design Adapter SV130 black M48 to M42 knurling design telescope adapter Features All metal construction and anod...
View full detailsSVBONY Camera Adapter for SCT (W9127A)
SvbonySVBONY SV167 Camera Adapter for SCT SVBONY SV167 is a T-adapter attaches an SLR or DSLR camera to a SCT for prime focus photography. T-threads ac...
View full detailsZWO Adapter - Nikon Lens to 2" Filter Wheel (EFW2-Nikon)
ZWOZWO Adapter - Nikon Lens to 2" Filter Wheel This adapter from ZWO allows for Nikon lenses to be used with 2-inch filter wheels (EFW). The interface...
View full detailsBaader Adapter M54 internal to M48 external (M54F/M48E)
Baader PlanetariumBaader Adapter M54 internal to M48 external (M54F/M48E) Reducing Adapter M54 to M48 with M54 female thread Changes the M54 male thread of an adapt...
View full detailsWilliam Optics M48 Push-in Nosepiece for WO 2" Diagonals (WD-DIG2A)
William OpticsWilliam Optics M48 Push-in Nosepiece for WO 2" Diagonals Special Reduced Price ! Take advantage of this high quality adapter nose piece for almost...
View full detailsQHY Adapter Kit - Combo D1-D2-D3
QHYCCDQHY Adapter Kit Combo D1 The Combo D1 adapter kit from QHY is compatible with the: QHY268C QHY600C QHY168C QHY247C QHY128C QHY410C QHY367C This k...
View full detailsTakahashi T-Ring DX Premium
TakahashiTakahashi T-Ring DX Premium Takahashi offers three different series of bayonet rings, whereby these three series differ in the connection thread on...
View full detailsTakahashi Spacer for TOA 130F (TKA31584)
TakahashiTakahashi Spacer for TOA 130F Takahashi M92 extension ring, is required, among other things, for the 67 flattener when used on the TOA-130F.Telesc...
View full detailsSVBONY T-Ring Adapter for Sony Alpha DSLR (W9153A)
Svbony5.0 / 5.0
1 Review
SVBONY SV196 T-Ring Adapter for Sony Alpha DSLR Allowing you to fit any T2 mount lens or accessory to your Sony Alpha or Minolta AF DSLR camera. 1....
View full detailsPegasus Astro M54 Male to 2” Nosepiece (inner hole with 2” filter thread) (ADAPT-M54M-2NP)
PegasusPegasus Astro M54 Male to 2” Nosepiece (inner hole with 2” filter thread) Total Nosepiece Length :35mm Adapter Thickness : 1.5mm Thread: Pitch 0....
View full detailsWilliam Optics Camera Angle Rotator for 2” M54 Focuser (M-CAA54)
William OpticsCamera Angle Rotator for 2” M54 Focuser All New Camera Angle Rotator for 2” M54 Focuser Fits : Z61 and all other brand Focuser with M54 threads. In...
View full detailsSvbony SV123 Spotting Scope Camera Adapter Extension Tube (F9194A)
Svbony5.0 / 5.0
1 Review
Svbony SV123 Spotting Scope Camera Adapter Extension Tube Svbony Spotting Scope Photo Adapter for DSLR Camera (Connect your Camera to Spotting Sco...
View full detailsAntares Adapter 2" to 2" Extension (ET2)
AntaresAntares Adapter 2" to 2" Extension ET2 extends any 2" accessory by 2". Accepts 2" filters. Double side screw with pressure band. Technical Speci...
View full detailsStarizona HyperStar ZWO Filter Drawer Adapter for ZWO Cooled Cameras
StarizonaStarizona HyperStar 8/6 ZWO Filter Drawer Adapter for ZWO Cooled Cameras HyperStar 8 / 6 ZWO Filter Drawer Adapter for ZWO Cooled Cameras In the Bo...
View full detailsPrimaluceLab 2" Visual Back for ESATTO 2" (PL8410001)
PrimaluceLabPrimaluceLab 2" Visual Back for ESATTO 2" If you want to use your telescope visually with ESATTO 2" or if you want to connect a camera with a 2" no...
View full detailsAstronomy Plus SCT Female to M42M Adapter (TA49)
Astronomy PlusAstronomy Plus SCT Female to M42M Adapter SCT Female to M42M metallic adapter. Adds 2 mm of back spacing Technical Specifications Connection Sid...
View full detailsAstronomy Plus M54F to M42F Adapter (TA211)
Astronomy PlusAstronomy Plus M54F to M42F Adapter M54F to M42F metallic adapter. Adds 0 mm of back Focus Technical Specifications Connection Side A M54 x 0.7...
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