Petzval Refractor 45mm f/4.5 203mm FMC Telescope w/Helical Focuser

Our 3-group, 5-element triplet Petzval APO structure ensures superior optical consistency and portability compared to complex 6-group all-separated designs—delivering exceptional sharpness with a simpler, more reliable form.

Featuring a native flat-field design, it eliminates the need for external correctors—saving cost and setup time while providing edge-to-edge star clarity right out of the box.

The one-piece helical focuser comes pre-equipped for Electronic Auto Focuser (EAF) mounting—enabling smooth, automated fine-tuning during imaging, unlike separate manual focus systems.

Designed with standard threaded interfaces and ample back focus, it seamlessly connects to DSLRs, astronomy cameras, and filter wheels—streamlining your imaging train without adapters.

With an all-metal body, protective lens coatings, and sealed construction, it performs reliably in humid or dusty environments—made for lasting performance under the stars.

Petzval Refractor 45mm f/4.5 203mm FMC Telescope w/Helical Focuser, 360º Rotator & M48 Thread| SVBONY SV545