another basic question...fans!
Hi folks
I sit here pouring over telescopes and i think i get the gist on why dobs have fans ...but for the life of me i cant work out how they are powered. Is it batteries or mains power. I guess im wondering if i need to buy something else to power the scope i buy..Or do i run an extension cord to the house or a generator...batteries???
Sorry if my questions are bit basic but if i dont ask i'll never get it..
Ta Snug
Ps ta for your patience with L'plater
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