I agree with Charles, the SA is a nice little unit and I've also used a small refractor on it. You may need extra CW with a refractor and so I use small stainless steel archery stabiliser weights. For example, the Infitec weights come in 28, 57, 113 & 198 g sizes that can be threaded together in any configuration with the included 1/4" 20 threaded rods of varying lengths. I screw the weights to the bottom of the SA CW bar with a cheap 1/4" to M6 adapter from eBay. Works well.
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