large ‘very’ thin mirror making why you should use thick glass!

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Post on 22-Dec-2015

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  • Slide 1
  • Large very thin mirror making Why you should use thick glass!
  • Slide 2
  • TRO Telescope 1998: 30 inch diameter 1 inch thick plate glass Edge ratio 30:1 Centre thickness ratio 60:1 !!! We were proud as punch.........and a lot younger.
  • Slide 3