I have a ZWO AM5 with the TC40 carbon fiber tripod. It handles my ED127 quite well at 952 mm without a counterweight, guiding between .2 and .5 arcseconds. I also use my AM5 with a C-11 (1990s Ultima) on a Celestron AVX tripod and it performs very well with an 11 pound counterweight, guiding between .4 and .6 arcseconds. Coming from a G-11, there’s a lot less drama and no tinkering required to get this mount to perform. The C-11 is definitely at the limits of it capabilities and I wouldn’t considering putting it on the TC-40 carbon fiber tripod with that much weight.

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