Re: (ATM) ATM Super planetary scope musings.

Ken Lowther (00109366@YSUB.YSU.EDU)
Sun, 20 Aug 95 09:59:11 EDT

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How good does the front window holding the secondary have to be. I am currently building my first scope and have considered that. Can you polish glass against glass and use the best one? I think the guy who built his folded reflector featured in S&T advocated that for his mirrors. I considered trying to draw a vacumm since I have a pump, but since I have never acutually seen a focuser, I am not sure it can be done, short of putting a piece of glass under the focuser. I am assuming that would mean 2 pieces of perfectly flat glass positioned exactly right.

Being a first scope I will probably go with a spider so that I can actually get around to using the scope sometime soon.

Ken Lowther

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