It is possible to build a 10" f5 imaging newt, using strut tube design, and get a rigid structure that weighs 12kg. This leaves you a good 3kg for camera, guide scope etc, and still achieve a 15kg total weight, which works ok on an EQ6 (but balance it correctly). However, I doubt you will find a production 10" f5 that is light enough for your mount. Just my 2 cents.
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