Svbony SV238 OAG(Off-Axis Guider), 8 * 14mm Prism Large

8 * 14mm Prism Large Area

Svbony SV238 OAG(Off-Axis Guider), 8 * 14mm Prism Large Area, 12.5 mm Body Thickness CNC Guide Scope, Dual Helical Focuser Telescope Accessory, with M54,M48 Adapter, for Astronomy Photograpy

Svbony SV238 Off-Axis Guider(OAG) delivers precise,reliable astrophotography performance. Direct connection to deep-sky cameras with M2.5 holes (noticed back focus). You can also connect to filter drawers (SV226 M54&SV226P);Compatible with ZWO/ToupTek New motorized filter wheel(with screw holes).

How to determine if it can be used with filter wheels and filter drawers from others?

1. Check if the screw holes match (M2.5/M3)

2. Compare whether the distance from the screw hole to the center matches (31mm).

3. Does the thickness meet the back intercept requirement?

Dual Helical for Precision Focusing

Equipped with a dual helical focuser, it offers precision focusing, flexible configurations, and stable guiding adjustments—ensuring sharp, reliable shots every time.

Adjustable Prism Height

SV238 with Guide camera compatibility: compatible with barrel-style guide cameras—where CMOS sensor is housed within the barrel section and positioned adjacent to OAG’s prism(adjustable prism height);and is not supported for guide cameras in which CMOS sensor is located at the base of body.

SV238 connects to cooled cameras with 2 methods:1.Direct connection to M2.5-hole cameras with self-provided extension tube/T-Ringis required to achieve 55mm back focus 2.Connection via filter drawers/filter wheels(with holes); confirm compatibility by hole parameters in SV238 mechanical drawings.

Wide Thread Support

M54, M48 & M42 adapters let you connect effortlessly to the majority of telescopes without extra adapters.

CNC-Machined Unibody

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

Specifications：

Material:6061 Aluminum Alloy
Processing Method:CNC Machining
Surface Treatment:Black Oxidation
Focusing Method:Dual Helical Focuser
Guide Scope Interface:M54 / M48
Guide Camera Interface:1.25 inches
Focusing Travel:9mm
OAG Body Thickness:12.5mm
M48 Thread Adapter Thickness:4mm
M54 Thread Adapter Thickness:5mm
Thread Adapter Rings:M42-M48, M42-M54
Prism Material:H-K9L
Clear Aperture:7.6×13.3mm
Coating:R<0.5% @400-700nm
Surface Accuracy:N:0.5
Cleanliness:40/20

  • SV238 Off-Axis Guider cannot be used in conjunction with SV226 M42 filter drawer; can only be used with SV226 M54 and SV226P filter drawer(SV226P will realease in the future)
  • 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: Off-Axis Guider 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
  • Precision CNC: aluminum alloy and precision CNC machining; this off-axis guider offers exceptional strength and durability; Its rigid structure resists outdoor temperature changes and deformation; providing stable performance for deep-sky imaging
  • 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 (Off-Axis Guider) 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
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SKU: B0FRZWB1CS
Weight: 256 Grams
Dimensions: 8 x 7 x 14.6 centimetres
Brand: SVBONY
Model: EUW9196A
Part: EUW9196A

Product Description

aplus content imageCollection of camera lenses displayed against dark background with star field. Shows various focal lengths and aperture sizes of professional photography equipment.aplus content imageaplus content imageaplus content image

CNC-Machined Unibody

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

Specifications：

Material: 6061 Aluminum Alloy
Processing Method: CNC Machining
Surface Treatment: Black Oxidation
Focusing Method: Dual Helical Focuser
Guide Scope Interface: M54 / M48
Guide Camera Interface: 1.25 inches
Focusing Travel: 9mm
OAG Body Thickness: 12.5mm
M48 Thread Adapter Thickness: 4mm
M54 Thread Adapter Thickness: 5mm
Thread Adapter Rings: M42-M48, M42-M54
Prism Material: H-K9L
Clear Aperture: 7.6×13.3mm
Coating: R<0.5% @400-700nm
Surface Accuracy: N:0.5
Cleanliness: 40/20

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