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Paul I did the cheap approach... a garden shed that rolls away (12 vlt winch)
It was under $1000 and that was using expensive pine panelling to line the internal walls and ceiling. I could not use sheeting as it would not fit in my small car whereas lenghts of panelling did..The shed in effect sits on a floor (with small wheels) with a channel so as to go around the pier.
Although only 1.5 mter square it houses the scope on the pier and provides a good warm room.
Power is 12vlt from a large car battery with a small inverter if I need 240vlt to recharge the lap top.
It rolls on and off easy but I added a $130 4wd winch cause I should not strain myself (hernia, heart and old to boot)
When it is cold I can close the door so when I finally get auto guiding will be able to stay warm...I have in mind a $100 closed circuit cam rather than a window which would be dearer and cause a lose of insulation.
Slide off roof and domes would be harder to keep warm in.
It is simple and a cost effective method which for me has advantages over the others.
Good luck with the decision making process.
alex
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