Spacer Rings, Extensions & Adapters

Astronomy Plus M58 Metal Extension Tube Elevate your astronomy game with our Astronomy Plus M58*0.75 Metal Focal Length Extension Tube (TA459). Nee...

Pegasus Astro NYX101 Retrofit Kit for Heavier OTAs   In the Box Retrofit Kit for Heavier OTAs  

Baader Optical Spacer Ring 0.5mm – for FCCT Additional optical spacer ring with 0.5mm thickness to achieve a perfect fine focus in case of focus p...

Baader DT-Adapter III M68a / SP54a DT Adapter III, M68ext / SP54ext extension adapter M68 Digital T Adapter System III enables the shortest adapta...

Baader DT-Adapter II T-2 / SP54a expanding adapter  Digital T Adapter System II, T-2 in on M46 to M82 SP54 (M54, Hyperion) digital T-rings, design...

Baader Zero-Tolerance Protective Canon DSLR T-Ring T-2/M48 and 2" Today's large sensor digital SLRs and advanced imaging techniques enable amateurs...

Baader T-2 C-Mount with mounted UV/IR Cut Filter 1" (25.4mm) C-mount (external thd) to T-2 Thread (internal thd) With integrated 1¼" filter mount ...

Baader C-Mount T-2 with integrated 1¼" Filterholder 1" (25.4mm) C-mount (external thd) to T-2 Thread (internal thd) With integrated 1¼" filter mou...

Baader 1" C-Mount-Adapter with 1-1/4" Nosepiece length 18mm 1¼" nosepiece with 1" (25.4mm) C-mount 18mm insertion length (with integrated 1¼ "filt...

Baader C-Mount Conversion-Ring 1"C(int) / T-2(ext)  Converts C-mount to T2 Thread Ring has 1" C-mount internal threads and external T-2 threads Al...

Baader C-Mount Nikon F-Mount Adapter Baader C-Mount adapter for Nikon F-mount DSLR camera lenses To connect DSLR camera lenses or DMK video module...

Baader C-Mount Canon EOS C-Mount to Canon EOS Adapter for DSLR camera lenses To connect DSLR camera lenses or DMK video modules Technical Specifi...

Baader IMP85 Extension IR90 37mm  37.5 mm Extension for the IR90 - Integrated Rotating Focuser from PlaneWave to the telescope to gain more back fo...

Antares 2" Binocular Filter adapter You can attach 2" filters to your roof prism binoculars with this set (2) of BAF1.  Fits binocular ...

Unihedron Sky Quality Meter - Tripod adaptors This adaptor kit was designed to fit the SQM, SQM,L,LU,LE,LR,DL. The battery compartments in the hand...

Baader IMP85 Adapter to M68i Connection camera side to M68x1 female thread on the Port 1 of the Instrument Multi Port IMP85 (#2451300) A variety ...

Baader IMP85 Adapter to FT 3.5" Telescope adapter for telescopes with Starlight Instruments FeatherTouch 3.5" focuser to the Instrument Multi Por...

Baader IMP85 Adapter to M100 Internal This adapter is used to povide a M100x1 female thread for Alluna Optics at port 1 of the Instrument Multi P...

Baader IMP85 Adapter to M100 External This adapter is used to mount the Instrument Multi Port IMP85 (#2451300) for Alluna Optics M100a (male thre...

Baader IMP85 Adapter to IR90 Focuser This adapter is used to mount the  Instrument Multi Port IMP85 (#2451300) to telescopes with IR90 focuser. A...

Baader IMP85 Adapter to Hedrick Focuser This adapter is used to mount the  Instrument Multi Port IMP85 (#2451300) to the PlaneWave CDK 14/17/20/2...

Baader M55a/M68a Adapter for all 2" Baader mirrors and prisms Baader M55a / M68a (Zeiss) adapter for all Baader 2" mirror and prism star diagona...

Baader 2" NexStar Locking Ring Allows direct connection of Baader 2" Zenith Prisms and mirrors to Schmidt-Cassegrain telescopes. For Celestron S...

Baader Universal Alan Gee II - Telecompressor (UAG II) Schmidt-Cassegrain telecompressor/reducer and flatfield-corrector For Schmidt-Cassegrain-...

Baader T-2 Locking ring with lever - for MaxBright® II T-2 (M42x0.75) Locking ring with lever for direct attachment of the MaxBright® II onto al...

Baader Bino auxillary-ring for adaptation of MaxBright® II Maxbright II Bino rotation lock/auxillary-ring – for the shortest possible adaptation...

Baader 2"M/2"M Inverter Ring with 48mm filter thread Converts 2" female into 2" male thread Internal M48 Filter thread for 2" filter Can be used ...

Baader 2"F / 2"F Thread-Inverter-Ring Reverses 2" (50,8mm) male into 2" female SC-thread allows shortest possible rigid connection onto 2" SC-thre...

Baader Off Axis Guider for Baader FlipMirror II  Off Axis Guider (BFM-OAG) for direct connection to the Baader FlipMirror II Star Diagonal (#24580...

Geoptik Maksutov / schmidt cassegrain adapter Brass adapter to use all S.C. accessories on the Mack  Technical Specifications Inside thread : Mak...

Geoptik Filter Reducer From 2" to 1.25"  Filter reducer from 2″ to 1,25″ In the Box Geoptik Filter Reducer From 2" to 1.25" Warranty & Manual A...

Geoptik 2" connex hose for SW focuser 2″ focuser SW adapter In the Box Geoptik 2" connex hose for SW focuser Warranty & Manual All Geoptik p...

Baader 2" Safety Kerf nosepiece with 2" filter thread Ultra hard 2"nose piece, with Baader proprietory Safety Kerfs (introduced with our Morpheus ...

Baader UFC 1.25" AUX-Filter-Holder (requires #2459113) Baader UFC 1¼" AUX-Filter-Holder Accepts mounted 1¼" filters Requires 1x UFC-RD50 Slider...