In brief:
- Thread for 31.8 mm (1.25") filters on the front
- Thread for Sky-Watcher finder M51x 0.75 mm (male) on the front
- 31.8 mm slider with 3 knurled screws made of glass-fibre reinforced plastic, arranged at an angle of 120° to ensure optimal attachment without risk of damaging your camera
- Made in France
- Compatible with QHY5LII, QHY5LIII, Altair GPCAM, GPCAM2, SBIG ST-i, Lodestar, UltraStar, ZWO ASI 174 Mini, ZWO ASI 290 Mini and many other cameras
With this adaptor, you can use your 31.8 mm format guiding camera with your Sky-Watcher finder. You then have an electronic viewfinder and/or an ultra-compact guide scope.
The adaptor is compatible with straight 8x50 or 9x50 viewfinder scopes from Sky-Watcher and Orion. It is also possible to use it with other comparable brands, e.g. Celestron. Once the ring is screwed onto the finder, simply insert your camera into the adapter sleeve and focus using the finder's focusing system at the level of the objective. The position of the camera can also be adjusted to obtain the desired focus. The depth of the sensor in the camera may vary from model to model.
This ring allows focusing with all CMOS/guiding cameras with a 1.25" (31.8 mm) barrel, whose sensor is placed up to 17.5 mm from the camera edge (typically C- and CS-mount).
It is possible to use the finder and camera set to automatically guide your mount with very little weight! You can then effectively autoguide instruments or photo lenses up to a focal length of 800 to 1000mm (depending on the characteristics of the sensor).
Note:
Some Celestron or Meade finder scopes are also compatible with this adapter ring. Please check the thread of your finder before ordering!
Caution:
- When used visually (with eyepieces), it may not be possible to focus.
- If your camera has a T2 thread (ASI120MC, ASI224MC, etc.), you will need a viewfinder adapter, for example AG0031.1 with T2 thread, otherwise focusing will not be possible.
