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 M68 Male to M63 Female
PegasusPegasus Astro M68 Male to M63 Female Adapter (Backfocus) Thickness: 1.4 mm Thread: Pitch 1.0 mm / 4 mm length Inner hole with M63F / 1.00 mm For ...
View full detailsBaader M54 x 0.75 Inverter Ring - M54M to M54F (M54-INVE)
Baader PlanetariumBaader M54 x 0.75 Inverter Ring - M54M to M54F Inverter ring with continuous M54 x 0,75 male thread Converts an M54 x 0.75 female thread into an...
View full detailsBaader 2" Clicklock Clamp for Takahashi Sky90 (external M64 Thread) (CLSKY90-2)
Baader PlanetariumBaader 2" Clicklock Clamp for Takahashi Sky90 (external M64 Thread) The wait is over. Baader Planetarium has developed the big brother to their acc...
View full detailsAstronomy Plus M48 T Adapter for LARGE SCT EDGE HD (9.25/11/14) (TA663)
Astronomy PlusAstronomy Plus M48 T Adapter for LARGE SCT EDGE HD (9.25/11/14) This T-Adapter allows you to connect your Celestron C925HD, C11HD, or C14HD teles...
View full detailsZWO M54M - M54F 7.5mm Adapter (M54-M54-7.5)
ZWOZWO M54M - M54F 7.5mm Adapter This adapter allows conversion from male M54 to female M54 with 7.5mm spacing. Technical Specifications M54 Male Thr...
View full detailsPegasus Adapter 3.29 inches (For SCTs C11, C14) Female to M68M (ADAPT-SCT3-M68M)
PegasusPegasus Adapter 3.29 inches (For SCTs C11, C14) Female to M68M Adapter 3.29 inches (For SCTs C11, C14) Female to M68M Technical Specifications ...
View full detailsBaader UFC S70 / 2" SC-thread (int) Telescope-Adapter (UFC-SCI)
Baader PlanetariumBaader UFC S70 / 2" SC-thread (int) Telescope-Adapter Baader UFC S70 / 2" SC-thread (int) Adapter Telescope-side: 2" SC internal thread Camera-sid...
View full detailsAstronomy Plus M48M to M42F Adapter (TA483)
Astronomy PlusAstronomy Plus M42F to M48M Adapter M42F to M48M metallic adapter. Adds 0 mm of back Focus Technical Specifications Connection Side A M48 x 0.75...
View full detailsBaader Flat Base Plate for BDS-NT Diamond Steeltrack (BDS-FLAT)
Baader PlanetariumBaader Flat Base Plate for BDS-NT Diamond Steeltrack Enables mounting of the Baader NT Diamond Steeltrack onto Dobsonians with flat mounting surfac...
View full detailsAstronomy Plus SCT Female to T2 Adapter (TA148)
Astronomy PlusAstronomy Plus SCT Female to T2 Adapter SCT Female ring to T2 (M42M) metallic adapter. Adds 55 mm of back spacing Technical Specifications Conn...
View full detailsAstronomy Plus M48F to M48F 6mm Adapter (TA482)
Astronomy PlusAstronomy Plus M48F to M48F 6mm Adapter M48F to M48F metallic adapter. Adds 6 mm of back Focus Technical Specifications Connection Side A M48 x ...
View full detailsPrimaluceLab Adapter ESATTO 3" for ARCO 3" (PL3600458)
PrimaluceLabPrimaluceLab Adapter ESATTO 3" for ARCO 3" Adapter ESATTO 3" for ARCO 3" allows you to connect the rotator to ESATTO 3" microfocuser and control it...
View full detailsADM D Series Male to Male Adapter. 12″ Long (DMM12)
ADMADM D Series Male to Male Adapter. 12″ Long Male to male dovetail plate. For use of secondary equipment on equatorial mount and DSBS. 12″ Long, 4″ ...
View full detailsTakahashi 2" Visual Adapter FS-78 (TKA21110)
TakahashiTakahashi 2" Visual Adapter FS-78 2 Inch Visual Adapter Female M56 to Female 50.8mm Sleeve Metal Back = 39.5mm Technical Specifications Female ...
View full detailsPegasus Astro NYX101 Retrofit Kit for Heavier OTAs (NYX101-RETROFIT)
PegasusPegasus Astro NYX101 Retrofit Kit for Heavier OTAs In the Box Retrofit Kit for Heavier OTAs
Baader Hyperion / Morpheus® M43 extension (SPCR-43)
Baader PlanetariumBaader Hyperion / Morpheus® M43 extension M43/M43 extension (distance ring), suitable for Morpheus, Hyperion and other eyepieces/adapters with M...
View full detailsPegasus Astro M68 Male to M68 Male (M54 inner hole)
PegasusPegasus Astro M68 Male to M68 Male (M54 inner hole) Adapter (Backfocus) Thickness: 1.4 mm Thread: Pitch 1.0mm / 4 mm length Inner hole with M54 / ...
View full detailsPegasus Astro M68 Male to M42 Male
PegasusPegasus Astro M68 Male to M42 Male Adapter (Backfocus) Thickness: 1.4 mm M68 Thread: Pitch 1.0mm / 4mm length M42 Thread Pitch 0.75mm / 4mm length...
View full detailsWilliam Optics SCT to 1.25" RotoLock Visual Back Adapter (F-ROTO-A2-125-SCT-TA)
William OpticsWilliam Optics SCT to 1.25" RotoLock Visual Back Adapter The new RotoLock series of adapters from William Optics may well set the "gold' standard ...
View full detailsBaader 2" Safety Kerf nosepiece with 2" filter thread (2408156)
Baader PlanetariumBaader 2" Safety Kerf nosepiece with 2" filter thread Ultra hard 2"nose piece, with Baader proprietory Safety Kerfs (introduced with our Morpheus ...
View full detailsBaader UFC 1.25" AUX-Filter-Holder (UFC-1)
Baader PlanetariumBaader UFC 1.25" AUX-Filter-Holder (requires #2459113) Baader UFC 1¼" AUX-Filter-Holder Accepts mounted 1¼" filters Requires 1x UFC-RD50 Slider...
View full detailsBaader 1mm UFC S70 / T-2 Adapter (UFC-T2I)
Baader PlanetariumBaader 1mm UFC S70 / T-2 Adapter Baader UFC T-2-Thread Adapter telescope-side: with T-2 internal thread camera-side: with S70 dovetail can be...
View full detailsBaader UFC S70 VariLock 15-20mm extension (UFC-XV)
Baader PlanetariumBaader UFC S70 VariLock 15-20mm extension Baader UFC S70/5 VariLock Extension 15-20mm Continuosly (stepless) adjustable UFC extension with millime...
View full detailsBaader UFC S70 Extension 5mm (UFC-XT5)
Baader PlanetariumBaader UFC S70 Extension 5mm Baader UFC S70/5 Extension 5mm Telescope-side: with S70 dovetail clamp (screws included) Camera-side: with S70 doveta...
View full detailsBaader UFC S70/15 Extension 15mm (UFC-XT15)
Baader PlanetariumBaader UFC S70/15 Extension 15mm Baader UFC S70/5 Extension 15mm Telescope-side: with S70 dovetail clamp (screws included) Camera-side: with S70 ...
View full detailsBaader 3mm UFC S70 11" RASA Telescope-Adapter (UFC-RASA11)
Baader PlanetariumBaader 3mm UFC S70 11" RASA Telescope-Adapter Baader UFC S70 / 11" RASA Adapter Telescope-side: RASA 11"-plate Camera-side: S70 dovetail Can be a...
View full detailsPrimaLuceLab Guide Scope Support for ECCO (ECCOSUP)
PrimaluceLabPrimaLuceLab Guide Scope Support for ECCO ECCO is completely metal built and, for this reason, it can also be used as a finder support by adding th...
View full detailsArtesky 360° Rotating T2 Adapter (ART8268V2)
ArteskyArtesky 360° Rotating T2 Adapter Thanks to the T2 360° rotator you can rotate your camera or your accessories 360° on its axis in order to straight...
View full detailsArtesky Twist Lock 2" Eyepiece Holder (ART-TLNEWSW)
ArteskyArtesky Twist Lock 2" Eyepiece Holder for Newton Skywatcher Artesky is pleased to present the 2" (50.8mm) Twist Lock eyepiece holder for Skywatcher...
View full detailsQHYCCD CGEM, Sky Watcher & Orion Polemaster Adapter (020022)
Astronomy PlusQHYCCD Sky Watcher and Orion Polemaster Adapter The PoleMaster™ is a high precision and simple to utilize electronic polarscope. The PoleMaster is ...
View full detailsSVBONY SV112 1.25" Eyepiece Projection Kit (F9183A)
SvbonySVBONY SV112 1.25" Eyepiece Projection Kit Svbony SV112 includes the parts you will need for both "prime focus" and variable "eyepiece projection...
View full detailsSVBONY DSLR to 1.25" Eyepiece Adapter
SvbonySVBONY DSLR to 1.25" Eyepiece Adapter The SVBONY SV149 DSLR camera lens to 1.25-inch eyepiece adapter is designed for digital Nikon AF lens (W9112...
View full detailsSVBONY 1.25" Eyepiece Adapter with Coaxial Lock (F9164A)
SvbonySVBONY 1.25" Eyepiece Adapter with Coaxial Lock Convenient hybrid adapter lets you use older style M42 format eyepieces in modern telescopes that...
View full detailsPrimaluceLab Adapter ESATTO 3,5” LP for OfficinaStellare Veloce RH200 (PL3600365)
PrimaluceLabPrimaluceLab Adapter ESATTO 3,5” LP for OfficinaStellare Veloce RH200 Since RH200 optimal backfocus is 105mm from the rear tip-tilt plate, by...
View full detailsPrimaluceLab Adapter from M98 to M68 with stop ring for ESATTO 3,5” LP (PL3600363)
PrimaluceLabPrimaluceLab Adapter from M98 to M68 with stop ring for ESATTO 3,5” LP Adapter from M98 to M68 with stop ring for ESATTO 3,5" LP allows you to con...
View full detailsWilliam Optics M63 to M48 Photo Adapter (P-PAM63-48)
William OpticsWilliam Optics M63 to M48 Photo Adapter Technical Specifications Weight:185g In the Box William Optics M63 to M48 Photo adapter Warranty &...
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