Adapter 1.4"i to 2"/SCTa and T-2i – for NexStar 4 / ETX

This should work - the adapter fits to the ETX-thread and provides a 2" SC-thread as it is used on the smaller Schmidt-Cassegrains made by Celestron and Meade (although there are some deviations over the years - especially with Meade, we have had some cases where the threads didn't fit, altough according to the specifications, they should fit).

Unfortunately, we do not have Sky-Watcher telescopes here and do not know the exact thread-dimensions of these telescopes (or if they have changed over time). Our adapter has got a female M35-thread and a female M28.5-thread. If your telescope's thread has got a diameter of ca. 35mm, chances are good.