The ZWO M68 Large Off-Axis Guider
Looking to take your autoguiding to the next level? Then look no further than this ZWO M68 Large Off-Axis Guider! By utilizing the larger aperture of your main telescope as opposed to a guide scope, incorporating this ZWO M68 Large Off-Axis Guider into your imaging train allows for a greater resolution of guide stars. Not only this, but both the guide camera and imaging camera will have the same field of view. This eliminates the issue of flexure, the slight difference in pointing positions between the main telescope and guidescope due to gravity. The result is improved guiding accuracy for higher quality images!
Designed for ASI Mini cameras, easily connect your ASI174MM Mini, ASI220MM Mini, or ASI120MM Mini for smooth, accurate guiding. Compared to the previous ZWO M68 OAG, this new and improved OAG-L version features a larger 12×12 prism size. This increased surface area sends more light to the guide camera, providing improved resolution of guide stars! With this larger prism, it is recommended to utilize telescopes with an aperture of M48 or larger for the best performance. To add improved stability to your imaging train, ZWO has removed the inner threads, allowing direct connection to your equipment via screws. Focusing on the best guide stars is proven effortless thanks to the helical focus design, and the compact nature of this off-axis guider adds minimal weight to your set up. Compatible with APS-C and full frame sensors, this ZWO M68 Large Off-Axis Guider is a must have for any astrophotographer.
The Guiding Solution for You!
This feature-packed accessory provides heightened stability within your imaging train, is compatible with today’s most popular cameras, and is furnished with ergonomics to make for a simplistic and effortless approach to guiding. Read more about this ZWO M68 Large Off-Axis Guider below!
A More Secure Method of Connection
When it comes to connecting the ZWO M68 Large Off-Axis Guider to your set up, instead of utilizing threads, ZWO has designed this accessory to bolt onto your equipment within your imaging train. This helps keep everything secure and stable! You can either bolt it directly to your camera, or use a spacer such as the ZWO M54 Adapter if additional backspacing is necessary. If wanting to add a ZWO 2” Filter Wheel or ZWO 36mm Filter Wheel, simply attach this ZWO Large OAG to these filter wheels via screws. On the telescope side of this OAG, you will find an included tilt plate with M48 threads for seamless connection to your OTA. Needing a different thread type for connection to your telescope? Not a problem! While not included, a ZWO M54 Tilt Adapter and a ZWO M68 Tilt Adapter are available if needed. This ZWO M68 Large Off-Axis Guider has a width of 17.5mm to help you preserve the industry standard 55mm of backspacing.
Camera Compatibility
This ZWO M68 Large OAG features an effective light passing aperture of 11.7mm x 8.3mm. As such, it can support APS-C and full frame cameras without the issue of vignetting. This allows for connection of popular cameras such as the ASI2600 MC Pro, ASI6200 MM Pro, and plenty more. To uphold image quality, its important to orient your camera in such a way that the sensor is not being obstructed by the prism. As far as guide camera compatibility, this ZWO OAG-L can only be employed for use with ZWO ASI Mini cameras, like the ASI174MM Mini, ASI220MM Mini, or ASI120MM Mini.
Focusing Made Easy
For the best results, it’s necessary to have both the guide camera and the main imaging camera the same distance away from the prism. This will ensure that when adjusting the focus of your telescope, both cameras will reach focus simultaneously. In order to do so, this OAG is fitted with thumb screws to allow shifting of the guide camera in and out to adjust the focusing distance. The included helical focuser will then help you hone in on your guide camera’s focus. To make this process easier and to preserve precious clear sky time, it’s recommended to first focus your main imaging camera on a faraway object during the day, then proceed to reach focus on the same object with your guide camera.
Effortless Prism Adjustment
To adjust the positioning of the prism, ZWO has made this process quick and effortless. On the tilt plate, you will find a hole that allows access to an M4 screw. Take a hex wrench, and loosen this screw. After doing so, you will be able to pinch both sides of the prism and adjust its positioning to bring it into alignment. Finally, retighten the M4 screw and you’re all set!
Only logged in customers who have purchased this product may leave a review.
Related products
what our customer say this product:
There are no reviews yet