Quote:
Originally Posted by mithrandir
I might have a simplistic view of this, but whatever drawtube length you have in the crayford, it is not going to be your only focusing device. You'll still need the C11's focuser to get you in the ball park. On that basis the 0.8" would probably be adequate.
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You are dead right Andrew. Shorter drawtube = less possibility of flex etc. Tony you still have to move the primary to get it in the ball park then fine focus with the crayford. I have found the 10:1 feather touch replacement focuser for the primary knob is also a useful addition.
Mark