The SVBONY SV550 122mm f/7 Triplet APO Refractor is a serious deep-sky imaging telescope designed for astrophotographers and advanced visual observers who demand sharp stars, excellent colour correction, and a mechanically robust OTA. With its 122mm aperture, 854mm focal length, and FPL-51 triplet apochromatic objective, it is exceptionally well suited to galaxies, nebulae, star clusters, lunar imaging, and high-resolution visual work.
This larger-aperture evolution of the popular SV550 platform gathers significantly more light than the 80mm version, delivering improved faint-object reach, stronger contrast, and more detailed astrophotography results.
Built for Deep Sky Astrophotography
The 122mm aperture and f/7 focal ratio strike an excellent balance between resolution, speed, and framing flexibility. This makes the SV550 ideal for:
- large nebulae
- galaxy imaging
- globular clusters
- wide lunar mosaics
- high-detail broadband astrophotography
FPL-51 Triplet Optics for Superior Correction
The heart of the SV550 is its triplet apochromatic lens design with FPL-51 ED glass, providing significantly improved chromatic aberration control over doublet designs. The result is tighter stars, cleaner colour correction, and better edge-to-edge sharpness for modern CMOS sensors.
This makes it an excellent match for Player One, ZWO, and DSLR imaging setups.
2.5" Dual-Speed Rack & Pinion Focuser
A premium 2.5-inch rack and pinion dual-speed focuser with 10:1 fine focus reduction provides precise focusing control for demanding imaging sessions. This larger focuser is especially useful when supporting heavy filter wheels, cooled cameras, OAGs, and flatteners.
Excellent Mechanical Platform for Imaging
The CNC-machined aluminium tube rings include an impressive 26 threaded mounting points plus top carry handle, making this OTA highly adaptable for:
- guide scopes
- EAF motors
- ASIAIR / mini PCs
- dew controllers
- cable routing systems
The included 300mm dovetail plate also makes balancing on EQ mounts far easier than shorter bars.
Accessory Compatibility & Imaging Threads
The focuser supports both 2" accessories and M63x1 threaded imaging accessories, making it ideal for field flatteners, reducers, rotators, and modern astrophotography imaging trains.
It pairs especially well with the SV209 field flattener and other M63 imaging accessories.
EAF & Autofocus Ready
The focuser assembly is compatible with electronic autofocus systems, making the SV550 a superb choice for fully automated NINA, ASIAIR, and remote observatory workflows.
Visual and Imaging Versatility
While primarily an imaging refractor, the 122mm aperture also makes this an outstanding visual scope for lunar, planetary, double star, and brighter deep-sky observation.
