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G'day Duncan,
IMHO it's come down to rotational inertia. How long is the OTA,
and how much mass is in the end of the tube?
I will use the G11 for the big DK Cass. Initial try without optics is promising. The mass is 27kg for the OTA. Not for deep sky!
Now the G11 has a 6" worm wheel, in your EQ6 has a 3". Think about it!
In the old days the worm wheel should be the diameter of the primary for long exposure photography.
My 2c.
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