OGMA OAG XL Off-Axis Guider with Helical Focuser and 1.25" Holder
The OGMA OAGXL Off-Axis Guider is designed for larger astrophotography setups. Its extended height accommodates bigger cameras and filter wheels. It features a larger prism optimized for guide cameras with larger sensors, providing an expanded field of view for more accurate guiding.
Highlights
Tall body design: Perfect for setups with larger filter wheels and cameras.
Larger prism: Captures more light and increases the field of view for guiding, especially useful for large-sensor guide cameras.
M42/M54 threads: Two interchangeable plates are provided for the telescope side for improved compatibility.
Adjustable prism: Allows for precise positioning, maximizing performance with different optics.
Precise focuser: Designed for easy and accurate adjustments, ensuring optimal focus on guide stars.
Durable construction: Made from lightweight, high-quality aluminum for stability without adding unnecessary weight.
The OAGXL is the ideal choice for astrophotographers using larger imaging equipment, offering enhanced guiding performance while ensuring your setup stays compact and efficient.
Assembly
If you don't use a filter wheel or a filter holder, use the included adapter between the OAG and the primary camera. This will help you achieve the required back focus for your guide camera.
Remember that if your primary camera doesn't have a UV/IR window, you must use a filter wheel or a filter holder with the right filter; otherwise, you won't get sharp stars.
Drawings
Adapter
Dimensions of the adapter included with the OAGXL
If you don't use a filter wheel or a filter holder, you can use the included adapter between the OAG and the camera to achieve the correct back focus of both the guiding and the main cameras.
You won't need this adapter if you use a filter wheel or a filter holder.
The preferred method for connecting this adapter is by using the provided screws to bolt it to the front of the camera. Then, bolt the OAG to the adapter.
For cameras that don't have the six threaded holes in the front, this adapter has an M54(f) thread on the camera's side, and an M48(f) thread on the OAG's side.
Installation
In the last part of this video, you can see how the OAG is connected to a filter wheel.
If you don't have a filter wheel and want to use the OAG, we recommend using the OGMA Universal Filter Drawer in place of the filter wheel. It is the easiest way to ensure that the OAG's prism will be placed correctly.