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[ATM] Is my mount right?
Hello
I am making a 20" telescope and I posted pictures of the progress on it at this site
http://www.atmlist.net/contrib/dwilliams1128-at-earthlink-dot-net/
and then you click on 20"Telescope Stuff and there are the pictures.
On some of the pictures you can see the plywood structure that I used as a mount for the primary mirror. I have used a layer of 3/4" thick weather stripping in a circle shape and then as a cross shape in the middle. I was wondering if this is orthodox procedure in the atm list. Probably though I should use a floating point mirror cell or Plop, but I don't know much or anything about either one of these things.
Either way I'm about ready to test out the mirror optically. I have the foucaolt tester and have done that already. And a friend of mine Jerry Martinsen from Stergis, MI who has made a few mirrors, said that the mirror is probably polished out now. I told him that I can see my reflection in the mirror directly over head and he said that isn't the way to tell. He said that the way to tell if it is polished is to do the foucaolt test. So I have the two mirrors the primary and the secondary and the primary holder, I just need the spider and holder for the secondary. The man who's making that is Gary Wolanski. He lives in Vancouver BC.
Well thank you for your help.
David Williams
dwilliams1128@earthlink.net
Bye
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