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3 hours ago, Rainer said:

OH I see quite long telescopes and ehre the weight is not relevant but the moment arm and how much it acts as a sail ...

Maybe a Truss Newtonian and not a tube Newtonian ?

Surely it wouldn't act much of a sail considering it's housed in an observatory dome. The only huge momentum would be while slewing to an object, perhaps two or three at most during a nights imaging?

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29 minutes ago, Nigella Bryant said:

The only huge momentum would be while slewing to an object,

For me that is not a problem.

But are you sure a Dome inhibits Air Currents ? I have never had a dome but the wind gets in everywhere ¿ or ?

Rainer

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10 minutes ago, Rainer said:

For me that is not a problem.

But are you sure a Dome inhibits Air Currents ? I have never had a dome but the wind gets in everywhere ¿ or ?

Rainer

Hiya, never had any problems with wind, except for too many beritos, lol. As I'd said b4, my current set up of an 12inch f4 1200mm 4ft scope on an neq6 performs well but I kmow it's well over load and with an option to upgrade to a 16inch a new mount is overdue. 

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