New Band Astrograph Lens APO Petzval for Deep-Sky Photography SV555 | Svbony
108 | ReviewsKey Features
- Get SV555 Full Review by @Cuiv, The Lazy Geek SV555 FAQ & Test SV555 Photography Portfolio
You May Also Need
-
on sale
-
on sale
-
on sale
-
on sale
-
on sale
-
on sale
-
on sale
-
on sale
SV555 Upgraded Astro-Camera Lens
Next-gen desensitized optical design for effortless focus and pin-sharp clarity. Integrated Petzval APO structure supports $44\text{mm}$ full-frame sensors and seamless EAF auto-focusing.
F4.5–F22 Variable Aperture
Fine-tune exposure and depth of field effortlessly. Graded click-stops prevent accidental changes, ensuring parameter stability during long exposure sequences.
Seamless Mount & Filter Integration
Rear M48x0.75 thread accepts standard 2" astro-filters. Dual Vixen/Arca-Swiss plate provides rock-solid mounting on both camera tripods and equatorial mounts.
Universal M48 Threading | Fast & Secure Camera Connection
Designed with an upgraded M48 threaded mount that directly replaces traditional screw-tightening setups. It seamlessly connects to DSLR and mirrorless cameras (with matching adapter) for faster assembly, precise optical alignment, and zero wobbling during exposure.
Ultra-Stable220mm Mounting System
Multi-functional handle ensures easy carrying and accessory mounting. Extended $220mm dovetail plate allows precise balance tuning for heavy camera setups.
Versatile Day & Night Shooting
Front M72 filter thread allows easy attachment of standard camera filters. Seamlessly transition from deep-sky astrophotography to daytime telephoto shooting.
Reversible Lens Hood | Ultra-Compact Outdoor Carrying
Features an inverted lens hood design that reverses neatly over the barrel to save essential bag space. Effortlessly pack your optic into standard camera bags for outdoor astrophotography without sacrificing front-element protection.
Verified Optical Precision | Guaranteed 0.997 Strehl Ratio
We validate every unit with individual Zygo interferometry testing before it ships, giving you factory-certified proof of optical perfection. Achieving a 0.997 Strehl ratio means maximum light throughput, needle-sharp star pinpointing, and zero guesswork about the quality of your astrophotography rig.
Apochromatic Color Control | True-to-Life Stellar Color
Precision-corrected wavelength convergence eliminates distracting purple halos and color fringing around bright stars. Enjoy ultra-clean star profiles and vibrant, natural target colors right out of the camera. 
Universal Dovetail Plate | Flexible Multi-Port Rig Integration
Equipped with standard 1/4"-20 and 3/8"-16 threads plus M6 mounting slots, allowing you to seamlessly attach guide scopes and accessories without extra adapters.
Engineered Precision Dimensions | Effortless Balancing & Rig Planning
Designed with exact physical proportions—including a 220mm base plate, 90mm front diameter, and M72 objective threads—giving you complete clarity when planning your rig. Knowing precise clearance and weight balance ahead of time ensures quick, hassle-free mounting onto any equatorial mount or photography tripod.
Complete Technical Specifications | Engineered for Professional Astrophotography
Featuring a Petzval 5-element design, 44mm full-frame image circle, and FMC optics, the SV555 delivers flat-field sharpness and versatile mounting options out of the box for effortless imaging.
SV555 Photography Portfolio
SV555 Upgraded Astro-Camera Lens
Next-gen desensitized optical design for effortless focus and pin-sharp clarity. Integrated Petzval APO structure supports $44\text{mm}$ full-frame sensors and seamless EAF auto-focusing.
F4.5–F22 Variable Aperture
Fine-tune exposure and depth of field effortlessly. Graded click-stops prevent accidental changes, ensuring parameter stability during long exposure sequences.
Seamless Mount & Filter Integration
Rear M48x0.75 thread accepts standard 2" astro-filters. Dual Vixen/Arca-Swiss plate provides rock-solid mounting on both camera tripods and equatorial mounts.
Universal M48 Threading | Fast & Secure Camera Connection
Designed with an upgraded M48 threaded mount that directly replaces traditional screw-tightening setups. It seamlessly connects to DSLR and mirrorless cameras (with matching adapter) for faster assembly, precise optical alignment, and zero wobbling during exposure.
Ultra-Stable220mm Mounting System
Multi-functional handle ensures easy carrying and accessory mounting. Extended $220mm dovetail plate allows precise balance tuning for heavy camera setups.
Versatile Day & Night Shooting
Front M72 filter thread allows easy attachment of standard camera filters. Seamlessly transition from deep-sky astrophotography to daytime telephoto shooting.
Reversible Lens Hood | Ultra-Compact Outdoor Carrying
Features an inverted lens hood design that reverses neatly over the barrel to save essential bag space. Effortlessly pack your optic into standard camera bags for outdoor astrophotography without sacrificing front-element protection.
Verified Optical Precision | Guaranteed 0.997 Strehl Ratio
We validate every unit with individual Zygo interferometry testing before it ships, giving you factory-certified proof of optical perfection. Achieving a 0.997 Strehl ratio means maximum light throughput, needle-sharp star pinpointing, and zero guesswork about the quality of your astrophotography rig.
Apochromatic Color Control | True-to-Life Stellar Color
Precision-corrected wavelength convergence eliminates distracting purple halos and color fringing around bright stars. Enjoy ultra-clean star profiles and vibrant, natural target colors right out of the camera.
Universal Dovetail Plate | Flexible Multi-Port Rig Integration
Equipped with standard 1/4"-20 and 3/8"-16 threads plus M6 mounting slots, allowing you to seamlessly attach guide scopes and accessories without extra adapters.
Engineered Precision Dimensions | Effortless Balancing & Rig Planning
Designed with exact physical proportions—including a 220mm base plate, 90mm front diameter, and M72 objective threads—giving you complete clarity when planning your rig. Knowing precise clearance and weight balance ahead of time ensures quick, hassle-free mounting onto any equatorial mount or photography tripod.
Complete Technical Specifications | Engineered for Professional Astrophotography
Featuring a Petzval 5-element design, 44mm full-frame image circle, and FMC optics, the SV555 delivers flat-field sharpness and versatile mounting options out of the box for effortless imaging.
SV555 Photography Portfolio
Realistic works captured with this device
4
Customer Reviews
All Reviews
Loading...
| Model | SV555 |
| Aperture | 54mm |
| Net Weight | 2450g (excluding accessories) |
| Focal Length | 243mm |
| Lens Coating | Fully Multi Coated |
| Image Circle | Φ 44mm (Full Frame) |
| Lockable 360º Rotator | Yes |
| Objective Type | Petzval Design（5 Elements in 3 Groups) |
| Optic Coated | FMC |
| Mount Type | Dovetail Plate |
| Dovetail Plate Length | 184mm |
| Dovetail Plate Width | 42mm |
| Lens Barrel Circumference | 293mm |
| Front Filter Thread | M72 |
| Back-end connection | M48x0.75 male thread |
| Length of Screws | 2 x M6 short screws, length 10mm 2 x M6 long screws, length 55mm 2 x M4 screws, length 8mm 4 x M5 screws, length 12mm |
| Focal Ratio | f/4.5-f/22 |
| Brand | SVBONY |
| Model | SV555 |
| Objective Type | Petzval Design（5 Elements in 3 Groups) |
| Aperture | 54mm |
| Optic Coated | FMC |
| Focal Length | 243mm |
| Focal Ratio | f/4.5-f/22 |
| Focuser | Helical |
| Image Circle | Φ 44mm (Full Frame) |
| Lockable 360º rotator | Yes |
| Mount Type | Dovetail Plate |
| Dovetail Plate Length | 184mm |
| Dovetail Plate Width | 42mm |
| Lens Barrel Circumference | 293mm |
| Front Filter Thread | M72 |
| Back-end connection | M48x0.75 male thread |
| Net Weight | 2450g (excluding accessories) |
| Length of Screws |
2 x M6 short screws, length 10mm
2 x M6 long screws, length 55mm
2 x M4 screws, length 8mm
4 x M5 screws, length 12mm
|
FAQ
Q1: The filter thread on the rear adapter plate of the SV555 does not have enough space to install the filters.A1: The internal filter slot of the CAA supports standard 2-inch filters with a thickness of 7.5mm. If you are using filters thicker than 10mm, they may not be compatible.
Q2: The four small screws for installing the camera adapter plate are cumbersome to remove and replace. This should be a threaded solution.
A2: The design features a standard 55mm back focus, which has already reserved space for filter installation. The filter mount in the CAA is more of an alternative option. If you plan to change filters while shooting, we recommend equipping a filter drawer or a filter wheel.
Q3: The camera rotation ring operates smoothly. Sometimes, it causes the entire tube to rotate within the mounting bracket instead of just the camera rotator.
A3: To address this issue, we recommend replacing the thumb screw inside the clamp with an M5 hex socket screw. The threading specifications remain consistent, allowing you to secure the clamp tightly using an Allen wrench, preventing the CAA from rotating the entire telescope.
Q4: The lens cap is difficult to put on, perhaps it's due to the dew shield?
A4: The objective lens cap needs to be screwed on rather than simply pressed. Align it with the threaded opening and turn clockwise to secure it firmly.
A5: We will optimize the overall design to ensure compatibility with Arca-Swiss mounts. Currently, if you are using an Arca-Swiss bracket, we recommend considering the F9143C dovetail plate, which features a UNC 1/4 thread output that meets astronomical requirements.
Q6: What is the problem of a "pinched stars"?
A6: The cause of this problem is not in the best focus. If in the right focus, it would disappear. You can solve this problem through the following solutions. If in 55mm back focus, pls set your EAF working parameters: please set the step size to 80-100; backlash about 30. Before starting EAF, please manually rotate the focus ring to move between the 164-∞ symbols, and then start EAF autofocus. The normal SV555 focus position should be around "∞"
Q7: Some other brand features dual-speed focusing while SV555 is helical focusing.
A7: Our standard EAF (Electronic Automatic Focuser) installation kit meets customers' needs for precise focusing.
Q8: The rear 2-inch filter on the Askar can be easily unscrewed by hand, unlike the SV555, which has four hex screws that require removal each time you change the filter.
A8: To ensure collimation with the M48 camera interface, we designed the SV555 with four fixed screw holes. The CAA comes equipped with a built-in 2-inch filter slot, which is more suitable for portable color camera users who typically do not require frequent filter changes. However, for professional astrophotographers, we recommend a dedicated filter drawer and electronic filter wheel as the preferred solution. We provide a standard 55mm back focus, allowing for seamless filter switching for professional users.
Q9: Has the halos in the scope been solved?
A9: Yes.
Q10: Does the SV555 need a field flattener?
A10: No, because SV555 is a petzval structure with an internal flat field design.
Q11: What's the difference between the old and new versions?
A12: The key upgrades are lighter weight and more compact size. Most importantly, every new unit now undergoes stricter quality testing to ensure flawless performance.
Package Includes:
- SV555 54mm f/4.5 OTA
- EAF Mount Kit
- Handle with integrated Vixen Finder saddle
- Dovetail plate with M6 threaded holes
- Camera Angle Adjuster
- 2" Filter Holder (assembled with the Lens)
- Plastic Lens Cover
- Soft Padded Case
- Instruction Manual
Google
Amazon