The OAG-L-68 maintains the same 12*12 prism as the OAG-L; however, it is designed exclusively for the ZWO ASI461MM Pro camera and ZWO 50mm square filter wheel.
Features
- Lightweight and exquisite, 17.5mm thickness.
- Prism size: 12*12mm.
- The effective light-passing aperture is 11.7mm*8.3mm.
- Can be used to connect the main camera and guide camera simultaneously. No guide telescope required.
- Packaged with an M48 sensor tilt plate (5mm).
OAG-L-68 Connection Method
You may find the M54 and M68 sensor tilt plates on the ZWO website.
The pictures below show how to remove the sensor tilt plate
How to adjust the position of the prism of OAG-L-68?
1. Use an M2 hex wrench to anticlockwise loosen the M4 screw in the through hole of the sensor tilt plate
2. Pinch the prism on both sides and then pull it to the proper position.
3. Then re-tighten the M4 screw with the M2 hex wrench.
OAG-L-68 Mechanical Diagram
Please Note
While adding OAG-L-68 into your optical train, please make sure the prism won’t block the camera sensor.
You can use the guiding screw to adjust the guiding camera’s focus length. Please make sure the distance from the prism to the main camera and to the guide camera are the same. To ensure results, it is better to do this at daytime as the adjustment will be very difficult at night.