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.
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Pegasus 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 detailsWilliam Optics Longer Adjusting Adapter for FLAT68III, FLAT7A (AD-M80-45-M48)
William OpticsWilliam Optics Longer Adjusting Adapter for FLAT68III, FLAT7A This adjustable adapter offers a convenient, efficient way to upgrade your WO diagona...
View full detailsAntares Adapter for Maksutov-Cassegrain, SCT (SCTMC)
AntaresAntares Adapter for Maksutov-Cassegrain And SCT Do you want the full repertoire of Schmidt-Cassegrain accessories for your Maksutov-Cassegrain? Jus...
View full detailsTele Vue 3.5" Extension Tube (X3C-0009)
Tele VueTele Vue 3.5" Extension Tube The Tele Vue 3.5″ Extension Tube helps your telescope reach focus when not using a diagonal — as is the case in many i...
View full detailsSky-Watcher Nikon M48 T-Ring (S20301)
Sky-Watcher5.0 / 5.0
1 Review
Sky-Watcher Nikon M48 T-Ring Designed for attaching a Nikon DSLR camera to any of the Sky-Watcher 0.85x Focal Reducer/Correctors.M48 rings are u...
View full detailsPegasus Astro Prodigy Microfocuser Telescope Adapters
PegasusPegasus Astro Prodigy Microfocuser Telescope Adapters Adapter for SCT 2" SCT 2-inchCan be used with SCT 2”telescopes (for 2” male thread telescop...
View full detailsPlaneWave SecureFit Spacers For CDK 14,17,20, & 24
PlanewavePlaneWave SecureFit Spacers For CDK 14,17,20, & 24 When you need a secure way to attach a CCD camera at the image plane of a CDK telescope, the...
View full detailsBaader M48 Extension Tube
Baader PlanetariumBaader M48 Extension Tube Used to adjust the working distance of larger cameras and similar accessories with M48 thread Telescope side M48 intern...
View full detailsPegasus Astro M68 Male to M63 Male
PegasusPegasus Astro M68 Male to M63 Male Adapter (Backfocus) Thickness: 1.4 mm Thread: Pitch 1.0mm / 4 mm length For Ricardi M63 Reducer & WO Reduce...
View full detailsAstronomy Plus 1.25'' M42 Variable Extension Tube (TA11)
Astronomy PlusAstronomy Plus 1.25'' M42 Variable Extension Tube Elevate your astronomy game with our metallic M42*0.75 variable Focal Length Extension Tube. Enha...
View full detailsAstronomy Plus M42F to M54M Adapter (TA471)
Astronomy PlusAstronomy Plus M42F to M54M Adapter M42F to M54M metallic adapter. Adds 0 mm of back Focus Technical Specifications Connection Side A M42 x 0.75...
View full detailsAstronomy Plus M54F to M48F Adapter (TA208)
Astronomy PlusAstronomy Plus M54F to M48F Adapter M54F to M48F metallic adapter. Adds 0 mm of back Focus Technical Specifications Connection Side A M54 x 0.7...
View full detailsAstronomy Plus M54M to M42F Adapter (TA210)
Astronomy PlusAstronomy Plus M54M to M42F Adapter M54M to M42F metallic adapter. Adds 0 mm of back Focus Technical Specifications Connection Side A M54 x 0.75...
View full detailsAstronomy Plus M42M to M48F Adapter (TA462)
Astronomy PlusAstronomy Plus M42M to M48F Adapter M42M to M48F metallic adapter. Adds 1mm of back Focus Technical Specifications Connection Side A M42 x 0.75 ...
View full detailsAstronomy Plus SCT Male to M48M Adapter (TA50)
Astronomy PlusAstronomy Plus SCT Male to M48M Adapter SCT Male to M48M metallic adapter. Adds 2mm of back Focus Technical Specifications Connection Side A SCT...
View full detailsAstronomy Plus SCT Male to M42M Adapter (TA24-6)
Astronomy PlusAstronomy Plus SCT Male to M42M Adapter SCT Male to M42M Adapter Metallic adapter. Adds 2mm of back Focus Technical Specifications Side A : SCT Ma...
View full detailsExplore Scientific iEXOS-100 Azimuth Adjuster Adapter (ES100AZADJ-03)
Explore Scientific5.0 / 5.0
1 Review
Explore Scientific iEXOS-100 Azimuth Adjuster Adapter The Azimuth Adjuster Adapter is designed for use on the Twilight Medium Duty or Twilight Heav...
View full detailsBaader Hyperion Finetuning-Ring M48, 14 mm (HDFT-14)
Baader PlanetariumBaader Hyperion Finetuning-Ring M48, 14 mm With the addition of Baader's new Finetuning Rings, each Hyperion eyepiece can now function as four eyep...
View full detailsAstronomy Plus M48M to M48M Adapter (TA24-5)
Astronomy PlusAstronomy Plus M48M to M48M Adapter M48M to M48M Metallic adapter. Adds 2mm of back Focus Technical Specifications Side A : M48 x 0.75 Male Side B...
View full detailsStarizona Canon RF Wide T-Ring (RF-TRING-10)
Starizona5.0 / 5.0
1 Review
Starizona Canon RF Wide T-Ring This wide M48-threaded T-ring will fit Canon RF-mount mirrorless cameras. It is a "T-minus" style ring that is on...
View full detailsAstronomy Plus M65x1 Metal Extension Tube (TA458)
Astronomy PlusAstronomy Plus M65*1 Metal Extension Tube Elevate your astronomy game with our Astronomy Plus M65x1 Metal Focal Length Extension Tube (TA458). Need...
View full detailsAstronomy Plus M72 Metal Extension Tube (TA456)
Astronomy PlusAstronomy Plus M72x0.75 Metal Extension Tube Elevate your astronomy game with our Astronomy Plus M72*0.75 Metal Focal Length Extension Tube (TA456)...
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 M54 Female
PegasusPegasus Astro M68 Male to M54 Female Adapter (Backfocus) Thickness: 1.4 mm M68 Thread: Pitch 1.0mm / 4mm length M54 Thread Pitch 0.75mm Technical...
View full detailsPegasus Astro M68 Male to M48 Female Adapter
PegasusPegasus Astro M68 Male to M48 Female Adapter Adapter (Backfocus) Thickness: 1.4 mm M68 Thread: Pitch 1.0mm / 4mm length M48 Thread Pitch 0.75mm T...
View full detailsArtesky M54 Adapter for Celestron EDGE HD 9.25" 11" and 14" (SCT-EDGE-M54)
ArteskyArtesky M54 Adapter for Celestron EDGE HD 9.25" 11" and 14" This photographic T-Adapter for telescopes is to be used together with an M54 ring to ...
View full detailsBaader Wide-T-Ring D52i for Nikon Z (TRING-NZW)
Baader PlanetariumBaader Wide-T-Ring D52i for Nikon Z, with S52 Adapter Baader Wide-T-Ring Nikon Z to connect Nikon Z cameras on the Astro T-2 system and the S52 do...
View full detailsQHYCCD Canon Lens Adapter M42 (020072)
QHYCCDQHYCCD Canon Lens Adapter M42 10mm M42 Canon Lens Adapter for QHYCCD Cooled CMOS (COLDMOS) imaging cameras.. Technical Specifications ...
View full detailsSVBONY SV125 2'' to T2 SLR Camera Adapter (F9196A)
SvbonySVBONY SV125 2'' to T2 SLR Camera Adapter Svbony 2'' to T2 camera adapter fits for all 2'' focusers, at the end of the adapter is threaded to ac...
View full detailsBaader 2mm UFC T-2 Extension Camera-Adapter (UFC-T2E)
Baader PlanetariumBaader 2mm UFC T-2 Extension Camera-Adapter Baader UFC T-2-Thread Adapter telescope-side: with mounting plate for UFC-Base (screws included) c...
View full detailsBaader UFC 2" (M48) Filter Slider (UFC-2)
Baader PlanetariumBaader UFC 2" (M48) Filter Slider Baader UFC 2" Filter Slider / Filter Container M48 suitable for cell mounted 2" (M48) filters slides into the UF...
View full detailsBaader 13mm UFC Base (Filter Chamber) S70 dovetail receptor (UFC-BASE)
Baader PlanetariumBaader 13mm UFC Base (Filter Chamber) S70 dovetail receptor Baader UFC Base (Filter Chamber) for 2" / 50.4 / 50x50 filter sliders Telescope-side:...
View full detailsArtesky Vixen Dovetail 5.5cm with 1/4" Screw (ART8209)
Artesky5.0 / 5.0
1 Review
Artesky Vixen Dovetail 5.5cm with 1/4" Screw Compact and very useful bar for connecting small accessories or reflex cameras with 1/4" photographic...
View full detailsSVBONY 2" T Adapter with Filter Thread (W2760A)
SvbonySVBONY 2" T Adapter with Filter Thread 2" T to M42*0.75 Adapter Thread for Astronomy Monocular Telescope Mount Adapters Accept 2" Filter and Came...
View full detailsPrimaluceLab 2" Visual Back for ESATTO 2" LP (PL8410053)
PrimaluceLabPrimaluceLab 2" Visual Back for ESATTO 2" LP If you want to connect a camera with a 2" nosepiece to your ESATTO 2” LP, just connect the 2" visual ...
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