Svbony Off-Axis Guider OAG SV238 - W9196A

Large 8×14mm Adjustable Prism
Enjoy a wider guiding field of view for deep sky imaging and more efficient guiding

Dual Helical Focuser for Stable Focus
Equipped with a dual helical focuser, the SV238 allows for fast and stable locking of focus, preventing star blur and maintaining sharp guiding

Durable CNC-Machined Construction
Made from CNC-machined aluminum, the SV238 offers exceptional durability, resistant to temperature fluctuations and deformation, ensuring reliable performance in outdoor conditions.

Compact, Flexible, and Sensor-Compatible
The compact design of the SV238 makes it compatible with APS-C and smaller sensors, offering fine-tunable guide camera height adjustments to fit a variety of setups and telescopes.

Versatile Thread Compatibility
Supporting M54, M48, and M42 filter threads, the SV238 ensures seamless connection with most telescope systems and guide cameras, providing ultimate flexibility for your astrophotography setup.

The OAG is an essential astroimaging accessory for long focal length telescopes that require the most accurate guiding possible. The SV238 OAG uses a prism to intercept a small portion of the telescope’s focal plane (outside the field of view of the main imaging camera) to locate a guide star. Any movement seen by the guide star will be the exact same movement seen by the imaging camera. Guiding this way will correct for tracking errors, as well as opto-mechanical errors or flexure. The result: better astroimages with pinpoint round stars.

1.The SV238 camera interface adopts a non-threaded mounting method, which aligns with industry trends aimed at addressing the common challenges of adjustable COMS and prism installation positions.

 

2.The SV238 features a standard mounting hole design, with an outer diameter that meets the specifications necessary for compatibility with leading brands. This allows it to seamlessly integrate with popular brands' EAW, filter drawers, and OAG extension tubes.

 

3.The SVBONY product line has been updated : The solution for achieving a 55mm back focus with the SV238 shooting setup can effectively utilize the M42-M48 filter drawer and the M48-M54 filter drawer for optimal pairing. 

Large 8×14mm prism

SVBONY SV238 OAG off-axis guidescope captures more starlight and provides a wider field of view. It can easily find the right guide star even in sparse star fields, ensuring a higher guiding success rate and stable performance.

Adjustable Prism Height

This OAG features precise prism height adjustment for flexible alignment with various cameras and telescopes. Fine-tune the prism position to capture bright guide stars and avoid ghosting in the primary camera, ensuring clear, stable images under any conditions.

Dual Helical Focuser

A dual helical focuser on the OAG allows ultra-fine, backlash-free focusing of the guide camera, ensuring pinpoint guide stars and accurate long-exposure tracking.

CNC-Machined Unibody

It withstands outdoor temperature shifts without deformation, delivering stable performance for astrophotography in all conditions.

Wide Thread Support

M54, M48 & M42 adapters let you connect effortlessly to the majority of cameras and telescopes without extra adapters. All-in-One Accessory Kit — Comes with multiple adapters and tools, ready for diverse astrophotography applications.

Package Details:

• Off-axis guider ×1
• M54 Threaded ring ×1
• M48 Adapter ring ×1
• M54-M42 Adapter ring ×1
• M48-M42 Adapter ring ×1
• M2.5*8 Hex Socket Screw ×12
• M3*12 Hex Socket Screw ×16
• M2 Long round 7-shaped wrench ×1
• M2.5 Long round 7-shaped wrench ×1
• User manual ×1

Prism Size	8 × 14 mm
Telescope Interface	M54 / M48
Main camera interface	Screw Connection
Guide camera interface	1.25inch
Prism Height Adjustable	Supported
Applicable Camera Sensors	Up to APS-C
Recommended Guide Sensor Size	1/3"~1/1.8"
OAG body thickness	12.5 mm
M48×0.75	4 mm
M54×0.75	5 mm
Adapters Included	M48, M54-M42, M48-M42