SVBONY SV238 Astronomy Off-Axis Guider OAG Large 8×14mm for Astrophotography
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The SVBONY SV238 Off-Axis Guider delivers precise, reliable performance for astrophotography. Its large prism captures more starlight and widens the field for easier guide star acquisition. Dual helical focuser ensures ultra-fine, stable adjustments. Crafted from durable CNC aluminum, it resists outdoor deformation. Universal compatibility (M54, M48) and adjustable prism height allow flexible setup for clear, stable deep-sky imaging.
  • SV238 is exclusively engineered to support insert-tube guide cameras featuring a CMOS sensor positioned close to the prism. This specialized design ensures seamless integration with the most common professional guide camera form factor used in astrophotography setups, delivering reliable, high-precision guiding performance. It does not support guide cameras with the CMOS chip at the bottom of the camera.
  • Large  prism: SVBONY SV238 OAG Off-Axis Guider captures more starlight and provides a wider field of view; making it easier to find suitable guide stars even in sparse star fields; This ensures higher guiding success and stable performance.
  • Precision dual helical focuser: OAG with dual helical focusing offers smooth; ultra-fine adjustments for precise star focusing; It locks focus quickly and stably; avoiding image blur caused by inaccurate guiding.
  • High precision structure: crafted from aluminum alloy with precision CNC machining; this SVBONY SV238 off-axis guider is strong; durable; and resistant to deformation in outdoor conditions.
  • Universal compatibility: off-axis guider supports M54; M48; and M42 interfaces; seamlessly connecting with most telescope systems; Its wide compatibility allows quick setup and hassle-free use; quickly targets objects; durable.
  • Prism height adjustment: this OAG features precise prism height adjustment; allowing flexible alignment with different cameras and telescopes; this means that clear and stable images can be obtained under any conditions.

💡💡💡Note: 
SV238 OAG Off-Axis Guider  Cannot be used in conjunction with SV226 M42 filter drawer. Can only be used in conjunction with SV226 M54 and SV226P filter drawer.

BrandSVBONY
ModelSV238
TypeOff-Axis Guider
Prism Size8 × 14 mm
OAG body thickness12.5 mm
M48 Thread Adapter Thickness4 mm
M54 Thread Adapter Thickness5 mm
Prism Height AdjustableSupported
Thread Adapter RingsM42-M48, M42-M54
Focusing MethodDual Helical Focuser
Focusing Travel9mm
Prism MaterialH-K9L
CoatingR<0.5% @400-700nm
Surface AccuracyN:0.5
Cleanliness40/20
Material6061 Aluminum Alloy
Processing MethodCNC Machining
Surface TreatmentBlack Oxidation
Country of OriginChina

Order Processing

Almost all of the standard orders are shipped within 1-2 business days, excluding weekends and holidays. The special orders for some customized products will take a little longer time, the specific time can be confirmed with our sales expert.

As soon as your order is ready, we’ll update the tracking number and inform you of the information.  If the item you ordered is temporarily out of stock, our customer service team will reach out to you. You can choose to wait until the item is back in stock or cancel your order.

 

Delivery Time

Delivery time depends on destination, logistics mode and other factors.

If the products that you purchased are available in our local warehouses, we will ship them from there and it takes about 1-6 business days for delivery as usual.
If the product you purchased is in stock at our warehouse in China, we will ship it from there. Delivery time is usually 5-9 business days.


 

Thank you for choosing SVBONY! We have established a strict system to ensure product quality in a responsible manner. These products are safe and reliable, and you can buy them with confidence. Should you have any issues, feel free to contact us. Our professional customer support team will patiently help you resolve the problems. We sincerely apologize in advance for any trouble and inconvenience that caused you.


Return & Refund

We offer a 30-day unconditional return policy.

1. You can get a full refund when you return an undamaged product for any reason within 30 days. Just make sure all products are in original condition and provide us with relevant pictures or videos to prove it.

2. If you are not sure whether the product is in brand new condition, you can contact us first. We can help you confirm and provide a return label. 

3. We will issue a refund immediately once the product arrives at our warehouse.Processing time usually takes 2-5 business days.

 

Warranty Time

We offer a 1-year warranty.

 

 

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Guaranteed after-sales, all products purchased from SVBONY  enjoy worry-free warranty, your product warranty period is one year.

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If you have any questions or inquiries about our products or services, please feel free to contact us.
 
 
 
 
 
 
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