Spacer Rings, Extensions & Adapters
Spacer Rings, Extensions & Adapters will help you achieve a correct back focus. There is many format and size for those rings and adapters.
Filters
- ADM (8)
- Antares (32)
- Antlia (1)
- APM (3)
- Artesky (12)
- Askar (3)
- Astro Hutech (1)
- Astroasis (3)
- Astronomy Plus (38)
- Atik (4)
- Baader Planetarium (113)
- Buckeye Stargazer (1)
- Celestron (3)
- Daystar (2)
- Explore Scientific (4)
- Geoptik (3)
- Hotech (1)
- Innovations Foresight (2)
- Kowa (3)
- Lunt (3)
- Optec (3)
- Orion (1)
- Pegasus (22)
- Planewave (19)
- Player One (5)
- PrimaluceLab (44)
- QHYCCD (7)
- QSI (4)
- Rowan Astronomy (2)
- Shelyak (3)
- Sky-Watcher (1)
- Starizona (5)
- Svbony (32)
- Takahashi (107)
- TEC (1)
- Tele Vue (18)
- Unihedron (1)
- William Optics (8)
- ZWO (23)
Astronomy Plus Binoculars Saddle Adapter for Red dot Finder (BINO-SA)
Astronomy PlusAstronomy Plus Binoculars Saddle Adapter for Red dot Finder With this new 3D printed (PLA) saddle, and with the help of the Celestron tripod adapte...
View full detailsSVBONY SCT to 2inch Eyepiece Adapter (W9120A)
SvbonySVBONY SV159 SCT to 2inch Eyepiece Adapter SVBONY SV159 SCT to 2" Eyepiece suitable for all schmidt-cassegrains telescope Brass Ring inside the tu...
View full detailsSVBONY SA404 M48-F to M42-M 1.25" adapter (W9165A)
SvbonySVBONY SA404 M48-F to M42-M 1.25" adapter SA404 is specially designed for the SV41 Mak spotting scope with the M48 Male thread. With a 1.25inch int...
View full detailsPlayer One M48M M42M 2mm Adapter (M48M-M42M-2)
Player OnePlayer One M48M M42M 2mm Adapter M48M-M42M 2mm adapter Material:Aluminum 6061-T6 Adapter: M48*0.75 male threads and M42*0.75 female threads Extenti...
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 detailsBaader M54 internal Inverter ring (M54-INVI)
Baader PlanetariumBaader M54 internal Inverter ring (converts external to internal) Changes a M54 male thread to a M54 female thread Width (optical length) = 7 mm M...
View full detailsWilliam Optics 2" to 1.25" RotoLock Eyepiece Adapter - Gold (F-ROTO-A2-125GDII)
William OpticsWilliam Optics 2" to 1.25" RotoLock Eyepiece Adapter - Gold The new RotoLock series of adapters from William Optics may well set the "gold' standa...
View full detailsPrimaluceLab M48 Spacer 1mm (PL3304801)
PrimaluceLabPrimaluceLab M48 Spacer 1mm Technical Specifications Product Name PrimaLuceLab - M48 Spacer 1mm SKU PRI-PL3304801 Brand PrimaluceLab ...
View full detailsPrimaLuceLab 7mm M48 Extension (PL3304807)
PrimaluceLabPrimaLuceLab 7mm M48 Extension PrimaLuceLab M48 extensions are available in different lengths and they present on both sides of a M48 thread (on...
View full detailsSVBONY 1.25" C Mount Adapter (W2159A)
SvbonySVBONY 1.25" C Mount Adapter Adapt the focal reducer to a standard C-mount video camera. Threads at the bottom of the c-mount adapter fit the threa...
View full detailsTakahashi Extension tube 35mm for ocular turret (TKA00105)
TakahashiTakahashi Extension tube 35mm for ocular turret A 35mm extension tube for the Takahashi turret of eyepieces This extension tube is particularly in...
View full detailsTakahashi Adapter 2" / 1.25" (DM) (TKA00111)
TakahashiTakahashi Adapter 2" / 1.25" (DM) Mechanical reducer to change an eyepiece holder from 2.0" to 1.25" diameter This mechanical reducer is used to c...
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 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 detailsAstroasis Oasis Focuser Universal Adapter
AstroasisAstroasis Oasis Focuser Universal Adapter With universal adapter Oasis Focuser can be installed on many telescopes such as Takahashi FSQ106, TOA130...
View full detailsAntares M42 Camera Extender Adapter Kit - 5mm, 10mm and 25mm
AntaresAntares M42 Camera Extender Adapter Kit - 5mm, 10mm and 25mm This kit includes 3 M42 Camera Extender Adapters (5mm, 10mm and 25mm). Built with qual...
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 detailsQHYCCD M54 All-in-One Adapter Kit
QHYCCDQHYCCD M54 All-in-One Adapter Kit If all the existing package solutions cannot meet the demand, such as the situation where the BFL requirement is ...
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 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 detailsZWO M54M-M48F-2mm adapter (M54M-M48F-2)
ZWOZWO 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 detailsZWO M54-M48 21mm Adapter (M54-M48-21)
ZWOZWO M54-M48 21mm Adapter The ZWO M54-M48 21mm Adapter is useful to obtain a precise spacing when using a focal reducer or corrector that needs a ce...
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 Standard T-Ring Adapter for 2.4" (TRG-1072)
Tele VueTele Vue Standard T-Ring Adapter for 2.4" The Tele Vue Standard T-Ring Adapter for 2.4" provides a standard T-ring thread to attach your camera too...
View full detailsTele Vue Accessory Tube for 2.4"
Tele VueTele Vue Long Accessory Tube for 2.4" The Tele Vue 0.040″ (1mm) Long Accessory Tube for 2.4″ adds 0.040″ (1mm) extension between Imaging System acc...
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 B...
View full detailsPrimaluceLab Adapter from M81
PrimaluceLabPrimaluceLab Adapter from M81 PrimaluceLab Adapter from M81 to M48 with Stop Ring for ESATTO 3" (PL3600277) The PrimaluceLab Adapter from M81 to M...
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 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 M48M to M42F Adapter (TA24-7)
Astronomy PlusAstronomy Plus M48M to M42F Adapter M48M to M42F metallic adapter. Adds 0 mm of back Focus Technical Specifications Connection Side A M48 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 Fine M48 Adjustment Spacer Rings (0.1 to 1mm)
Astronomy PlusAstronomy Plus Fine Adjustment M48 Spacer Rings Spacers in astrophotography are used to achieve precise backfocus, ensuring the optimal distance be...
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 detailsExplore Scientific iEXOS-100 Azimuth Adjuster Adapter (ES100AZADJ-02)
Explore ScientificExplore Scientific iEXOS-100 Azimuth Adjuster Adapter The Azimuth Adjuster Adapter is designed for use on the Twilight Medium Duty or Twilight Heav...
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 detailsin Canada over 500$+* bf txs

Paybright and Sezzle at Check Out

Contact us!
Find a Better Price? We Will Match it!
Sign Up to Astronomy Plus Newsletters
Subscribe to our Newsletter to be the first to be inform about Promotions, New Products and More!