Petzval Refractor Astrograph Lens | SVBONY SV545
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Key Features
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.
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| Model | SV545 |
| Objective Type | Petzval Design（5 Elements in 3 Groups) |
| Aperture | 45mm |
| Optic Coated | FMC |
| Focal Length | 203mm |
| Focal Ratio | f/4.5 |
| Focuser | Helical |
| Lockable 360º rotator | Yes |
| Mount Type | Dovetail Plate |
| Back-end connection | M48x0.75 male thread |
| Estimated weight | 2750g |
Package Includes:
- Astro APO Camera Lens
- EAF Mount Kit
- Handle with integrated Vixen Finder saddle
- Dovetail plate
- Camera Angle Adjuster
- 2" Filter Holder (assembled with the Lens)
- Plastic Lens Cover
- M48 Metal Lens Cover
- Soft Padded Case
- Wrench& Screw
- Instruction Manual
Telescopes
SV545_User_Manual
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