SVBONY SV545 Petzval APO Refractor Telescope
- Focal Length Description: 8 inches
- Focus Type: Auto/Manual, Supports EAF(not Included)
- Warranty Description: Lifetime
- Item Weight: 2.16 pounds
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
An auto/manual focus telescope built to accept an electronic autofocuser add-on, a fit mainly for buyers already assembling an astrophotography rig.
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ASIN: B0G651FB3WModel: SV545Category: Telescopes
Overview
The Svbony CAW9317B is a telescope with auto and manual focus modes and support for an electronic autofocuser (EAF), sold separately. That EAF compatibility signals it is built with astrophotography upgrades in mind.
Auto/manual focus gives flexibility between hands-on adjustment and motorized fine tuning, while EAF support (the electronic autofocuser itself is not included) is a detail that matters mainly to astrophotographers running focus through a compatible controller. Listed weight data on this unit looks inconsistent with a handheld telescope and is left out here rather than guessed at.
- Auto/manual focus
- EAF-compatible, autofocuser sold separately
- Svbony CAW9317B model
- Telescope category
Who it's for
Suits a buyer already building an astrophotography setup who wants a scope ready to accept an add-on electronic autofocuser later. Less suited to a first-time buyer looking for a simple grab-and-view scope, since EAF support is a feature for automated imaging workflows.
Pros and cons
- Supports auto and manual focus modes
- Compatible with add-on electronic autofocuser (EAF)
- Svbony brand with astrophotography-oriented feature set
- Electronic autofocuser not included, sold separately
- No aperture, focal length or mount details listed
- Weight data on the listing is unclear and not usable
Performance notes
Auto/manual focus means the scope can be adjusted by hand for casual viewing or handed off to a motor-driven system when precision refocusing matters, such as during long imaging sessions. EAF support extends that further by allowing a separately purchased electronic autofocuser to take over fine focus adjustments under software control.
Specifications
| Brand | Svbony |
|---|---|
| Model | SV545 |
| Dimensions & fit | |
| Focal Length Description | 8 inches |
| Item Weight | 2.16 pounds |
| Lens Fixed Focal Length | 8 inches |
| Maximum Focal Length | 8 inches |
| Minimum Focal Length | 8 inches |
| Compatibility & installation | |
| Compatible Camera Mount | Vixen Dovetail |
| Warranty & support | |
| Warranty Description | Lifetime |
| Other details | |
| Focus Type | Auto/Manual, Supports EAF(not Included) |
| Exposure Control Type | Automatic |
| Media Type | ProductImage |
| Viewfinder Type | Electronic viewfinder |
| Builtin Media | 1X EAF Mounting Bracket;1X Timing Belt;1X Timing Pulley, 1X M4 Hex Socket Screw; 1XM3 Hex Key ;2XM5 Hex Socket Screw; 1XM4 Hex Key;4XM6 Hex Socket Screw;1XM5 Hex Key, 1X M48 Metal Threaded Dust Cap; 1X Plastic Objective Lens Cap, 1X SV545 APO, 1X Tube Ring; 1X M5 Thumb Screw; 1X M4 Thumb Screw;1X Do |
| Camera Lens | 203mm f/4.5 APO Astro Camera Lens, professional triplet refractor with 44mm image circle, designed for deep-sky imaging and full-frame camera support |
| Image Stabilization | no image stabilization |
| Lens | Telephoto |
| Lens Design | Prime |
| Light Sensitivity | Wide light sensitivity range |
| Maximum Aperture | 4.5 f |
| Minimum Aperture | 4.5 f |
| Water Resistance Level | Not Water Resistant |
Frequently asked questions
Is the electronic autofocuser included?
No. The listing notes EAF support but the autofocuser itself is not included and must be purchased separately.
Can I focus this telescope by hand?
Yes, it offers both auto and manual focus modes.
Who is the EAF feature useful for?
Mainly astrophotographers running automated focus routines through a separate electronic autofocuser and compatible controller.